diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index e2ace42..6c4d0b1 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -12,7 +12,7 @@ on:
     # The branches below must be a subset of the branches above
     branches: [master]
 #  schedule:
-#    - cron: '0 10 * * 6'
+#    - cron: '0 6 * * 3'
 
 jobs:
   analyze:
@@ -30,20 +30,11 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
-      with:
-        # We must fetch at least the immediate parents so that if this is
-        # a pull request then we can checkout the head.
-        fetch-depth: 2
-
-    # If this run was triggered by a pull request event, then checkout
-    # the head of the pull request instead of the merge commit.
-    - run: git checkout HEAD^2
-      if: ${{ github.event_name == 'pull_request' }}
+      uses: actions/checkout@v3
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -54,7 +45,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v1
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ� Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -68,4 +59,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2
diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
new file mode 100644
index 0000000..1ba3aa0
--- /dev/null
+++ b/.github/workflows/maven.yml
@@ -0,0 +1,26 @@
+name: Java CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Check w/o SNAPSHOT when "bump version"
+        if: ${{ contains(github.event.head_commit.message, 'bump version') }}
+        run: grep "<version>" pom.xml | head -1 | grep -v SNAPSHOT
+
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v3
+        with:
+          java-version: '8'
+          distribution: 'temurin'
+          cache: maven
+
+      - name: Build with Maven
+        run: mvn -B package --file pom.xml
diff --git a/.gitignore b/.gitignore
index 3fec32c..a9bc98b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 tmp/
+local.properties
diff --git a/pom.xml b/pom.xml
index 371d5c9..e793982 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,18 +5,64 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
+
   <groupId>vavi</groupId>
   <artifactId>vavi-apps-treeview</artifactId>
+  <version>0.0.2</version>
+
   <name>Vavi TreeView Application</name>
   <organization>
-    <name></name>
+    <name>vavi</name>
   </organization>
-  <version>0.0.1</version>
   <url>https://github.com/umjammer/vavi-apps-treeview</url>
+  <scm>
+    <url>https://github.com/umjammer/vavi-apps-treeview</url>
+  </scm>
+  <issueManagement>
+    <url>https://github.com/umjammer/vavi-apps-treeview/issues</url>
+  </issueManagement>
+
+  <profiles>
+    <profile>
+      <!-- mvn -P run antrun:run -Dargs='xxx' -->
+      <id>run</id>
+      <build>
+        <plugins>
+          <plugin>
+            <!-- GOOD: fork: OK, test jars: OK, user args, default args: OK -->
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-antrun-plugin</artifactId>
+            <version>3.1.0</version>
+            <goals>
+              <goal>run</goal>
+            </goals>
+            <configuration>
+              <target>
+                <java classname="sample.Sample" fork="true">
+                  <classpath>
+                    <path refid="maven.compile.classpath"/>
+                    <path refid="maven.test.classpath"/>
+                  </classpath>
+                  <jvmarg value="-Djava.util.logging.config.file=${project.build.testOutputDirectory}/logging.properties" />
+                  <jvmarg value="-Dswing.defaultlaf=com.formdev.flatlaf.FlatLightLaf" />
+                  <jvmarg value="-Dapple.laf.useScreenMenuBar=true" />
+                  <jvmarg value="-Dapple.awt.application.name=TreeView" />
+                  <jvmarg value="-Dtv.resource.tree=/sample/tree.xml" />
+                </java>
+              </target>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+
   <build>
     <plugins>
       <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
+        <version>3.10.1</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
@@ -26,82 +72,84 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>native2ascii-maven-plugin</artifactId>
+        <version>2.0.1</version>
         <executions>
           <execution>
             <goals>
-              <goal>native2ascii</goal>
+              <goal>resources</goal>
             </goals>
             <configuration>
-              <includes>**/*_ja.properties</includes>
+              <includes>**/*.properties</includes>
             </configuration>
           </execution>
           </executions>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+        <version>3.0.0-M7</version>
+        <configuration>
+          <argLine>
+            -Djava.util.logging.config.file=${project.build.testOutputDirectory}/logging.properties
+          </argLine>
+          <trimStackTrace>false</trimStackTrace>
+        </configuration>
+      </plugin>
     </plugins>
-    <pluginManagement>
-      <plugins>
-        <!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the Maven build itself.-->
-        <plugin>
-          <groupId>org.eclipse.m2e</groupId>
-          <artifactId>lifecycle-mapping</artifactId>
-          <version>1.0.0</version>
-          <configuration>
-            <lifecycleMappingMetadata>
-              <pluginExecutions>
-                <pluginExecution>
-                  <pluginExecutionFilter>
-                    <groupId>org.codehaus.mojo</groupId>
-                    <artifactId>native2ascii-maven-plugin</artifactId>
-                    <versionRange>[1.0-alpha-1,)</versionRange>
-                    <goals>
-                      <goal>native2ascii</goal>
-                    </goals>
-                  </pluginExecutionFilter>
-                  <action>
-                    <execute/>
-                  </action>
-                </pluginExecution>
-              </pluginExecutions>
-            </lifecycleMappingMetadata>
-          </configuration>
-        </plugin>
-      </plugins>
-    </pluginManagement>
   </build>
+
   <repositories>
     <repository>
       <id>jitpack.io</id>
       <url>https://jitpack.io</url>
     </repository>
   </repositories>
+
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>org.junit</groupId>
+        <artifactId>junit-bom</artifactId>
+        <version>5.9.1</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+
   <dependencies>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <version>4.13.1</version>
-      <scope>test</scope>
-      <optional>false</optional>
-    </dependency>
     <dependency>
       <groupId>com.github.umjammer</groupId>
       <artifactId>vavi-commons</artifactId>
-      <version>1.0.6</version>
-      <optional>false</optional>
+      <version>1.1.8</version>
     </dependency>
     <dependency>
       <groupId>com.github.umjammer</groupId>
       <artifactId>vavi-awt</artifactId>
-      <version>1.0.1</version>
-      <optional>false</optional>
+      <version>1.0.6</version>
     </dependency>
-  </dependencies>
-  <scm>
-    <url>https://github.com/umjammer/vavi-apps-treeview</url>
-  </scm>
-  <issueManagement>
-    <url>https://github.com/umjammer/vavi-apps-treeview/issues</url>
-  </issueManagement>
-  <description>TODO
 
-    </description>
+    <dependency>
+      <groupId>com.formdev</groupId>
+      <artifactId>flatlaf</artifactId>
+      <version>2.6</version>
+      <scope>runtime</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-engine</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.platform</groupId>
+      <artifactId>junit-platform-commons</artifactId>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
 </project>
diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..e686659
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,12 @@
+[![Release](https://jitpack.io/v/umjammer/vavi-apps-treeview.svg)](https://jitpack.io/#umjammer/vavi-apps-treeview)
+[![Java CI](https://github.com/umjammer/vavi-apps-treeview/actions/workflows/maven.yml/badge.svg)](https://github.com/umjammer/vavi-apps-treeview/actions/workflows/maven.yml)
+[![CodeQL](https://github.com/umjammer/vavi-apps-treeview/actions/workflows/codeql-analysis.yml/badge.svg)](https://github.com/umjammer/vavi-apps-treeview/actions/workflows/codeql-analysis.yml)
+![Java](https://img.shields.io/badge/Java-8-b07219)
+
+# vavi-apps-treeview
+
+� Incubation for tree and application bindings.
+
+## References
+
+ * [vavi-commons-sandbox](https://github.com/umjammer/vavi-commons-sandbox):dynamicmorphizm
\ No newline at end of file
diff --git a/src/main/java/vavi/apps/treeView/TreeNodeInfo.java b/src/main/java/vavi/apps/treeView/TreeNodeInfo.java
index eb325b7..fafd663 100644
--- a/src/main/java/vavi/apps/treeView/TreeNodeInfo.java
+++ b/src/main/java/vavi/apps/treeView/TreeNodeInfo.java
@@ -18,16 +18,16 @@
 public interface TreeNodeInfo extends BeanInfo {
 
     /** */
-    public static final int ICON_COLOR_16x16_EXT1 = 4;
+    int ICON_COLOR_16x16_EXT1 = 4;
 
     /** */
-    public static final int ICON_COLOR_32x32_EXT1 = 5;
+    int ICON_COLOR_32x32_EXT1 = 5;
 
     /** */
-    public static final int ICON_COLOR_16x16_EXT2 = 6;
+    int ICON_COLOR_16x16_EXT2 = 6;
 
     /** */
-    public static final int ICON_COLOR_32x32_EXT2 = 7;
+    int ICON_COLOR_32x32_EXT2 = 7;
 }
 
 /* */
diff --git a/src/main/java/vavi/apps/treeView/TreeView.java b/src/main/java/vavi/apps/treeView/TreeView.java
index 813f856..8af9ab3 100644
--- a/src/main/java/vavi/apps/treeView/TreeView.java
+++ b/src/main/java/vavi/apps/treeView/TreeView.java
@@ -12,21 +12,19 @@
 import java.awt.event.KeyEvent;
 import java.io.BufferedOutputStream;
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.nio.file.Files;
 import java.util.List;
 import java.util.Locale;
 import java.util.Properties;
 import java.util.ResourceBundle;
-
 import javax.swing.AbstractAction;
 import javax.swing.Action;
 import javax.swing.ImageIcon;
 import javax.swing.JButton;
 import javax.swing.JFileChooser;
-import javax.swing.JFrame;
 import javax.swing.JLabel;
 import javax.swing.JMenu;
 import javax.swing.JMenuBar;
@@ -48,7 +46,7 @@
 
 
 /**
- * ツリービュー��．
+ * The tree view.
  * 
  * @author <a href="mailto:vavivavi@yahoo.co.jp">Naohide Sano</a> (nsano)
  * @version 0.00 010820 nsano initial version <br>
@@ -56,16 +54,16 @@
  */
 public class TreeView {
 
-    /** リソース�ンドル */
+    /** */
     private static final ResourceBundle rb = ResourceBundle.getBundle("vavi.apps.treeView.TreeViewResource", Locale.getDefault());
 
-    /** Tree � UI */
+    /** UI */
     private TreeViewTree tree;
 
-    /** ルート�ツリーノード */
+    /** root tree node */
     private TreeViewTreeNode root;
 
-    /** ステータス�ー */
+    /** status bar */
     private JLabel statusBar = new JLabel(rb.getString("statusBar.welcome"));
 
     /** The popup menu */
@@ -74,31 +72,33 @@ public class TreeView {
     private TreeViewTreeEditor editor;
 
     /**
-     * TreeView を作����．
+     * Creates TreeView．
      */
-    public TreeView() {
-
+    public TreeView(Object userObject) throws IOException {
         popupMenu = createPopupMenu();
         setActionStates(null);
 
-        init();
-
-        tree = new TreeViewTree(root);
+        tree = new TreeViewTree();
         tree.addEditorListener(el);
 
+        init(userObject);
+        InputStream is = vavi.swing.binding.treeview.TreeView.Util.init(userObject);
+        load(is);
+        tree.setRoot(root);
+
         editor = new TreeViewTreeEditor(tree);
         editor.addEditorListener(el);
     }
 
     /**
-     * Tree � UI を返���．
+     * Gets Tree UI.
      */
     public JTree getUI() {
         return tree;
     }
 
     /**
-     * メニュー�ーを�得���．
+     * Gets the menu bar.
      */
     public JMenuBar getMenuBar() {
         JMenuBar menuBar = new JMenuBar();
@@ -154,7 +154,7 @@ public JMenuBar getMenuBar() {
     }
 
     /**
-     * ツール�ーを�得���．
+     * Gets the tool bar.
      */
     public JToolBar getToolBar() {
         JToolBar toolBar = new JToolBar();
@@ -177,26 +177,26 @@ public JToolBar getToolBar() {
         return toolBar;
     }
 
-    /** ステータス�ーを�得���． */
+    /** Gets the status bar. */
     public JLabel getStatusBar() {
         return statusBar;
     }
 
-    /** ""メニュー */
+    /** "" menu */
     private JMenu objectMenu;
 
-    /** "ウインドウ"メニュー */
+    /** "Window" menu */
     private JMenu windowMenu;
 
     /**
-     * "ウィンドウ"メニューを�得���．
+     * Gets "Window" menu.
      */
     public JMenu getWindowMenu() {
         return windowMenu;
     }
 
     /**
-     * �ップアップメニュー�設定を���．
+     * Creates the popup menu.
      */
     private JPopupMenu createPopupMenu() {
 
@@ -221,64 +221,55 @@ private JPopupMenu createPopupMenu() {
     // -------------------------------------------------------------------------
 
     /** */
-    private Dao dao = new XmlDao();
+    private Object userObject;
 
     /**
-     * �期状態����．
+     * Initializes.
      */
-    private void init() {
-        try {
-            InputStream is = getClass().getResourceAsStream(props.getProperty("tv.resource.tree"));
-            root = dao.read(is);
-        } catch (Exception e) {
-Debug.println(props.getProperty("tv.resource.tree") + " cannot read: tv.resource.tree");
-Debug.printStackTrace(e);
-            // System.exit(1);
-        }
+    public void init(Object userObject) {
+        this.userObject = userObject;
     }
 
     /**
-     * ツリーノードをロード���．
+     * Loads a tree nodes.
      */
     @SuppressWarnings("unused")
     private void load(InputStream is) throws IOException {
-        root = dao.read(is);
+        root = vavi.swing.binding.treeview.TreeView.Util.load(userObject, is);
         ((DefaultTreeModel) tree.getModel()).setRoot(root);
     }
 
     /**
-     * ツリーノードをセーブ���．
+     * Saves the tree nodes.
      */
     private void save(OutputStream os) throws IOException {
-        dao.write(root, os);
+        vavi.swing.binding.treeview.TreeView.Util.save(userObject, os, root);
     }
 
     /**
-     * 終了���．
+     * Exits the program.
      */
     private void exit() {
         System.exit(0);
     }
 
-    // -------------------------------------------------------------------------
-
     private boolean isPastable = false;
 
     /**
-     * �択�れ��るノード�応��メニュー表示を制御���．
+     * Displays a menu suitable for a selected node.
      * 
-     * @param node �択�れ�ノード
+     * @param node selected dnode
      */
     private void setActionStates(TreeViewTreeNode node) {
-        // �れ�れ�メニュー�実行��る�を�ェック��表示を決定
+        // determine a menu for displaying by checking each menu is able to execute or not.
 
-        if (node != null) { // アイテム�択時
+        if (node != null) { // when item selected
 
             cutAction.setEnabled(node.canCut());
             copyAction.setEnabled(node.canCopy());
             pasteAction.setEnabled(node.canCopy() && isPastable);
             deleteAction.setEnabled(node.canDelete());
-        } else { // アイテム��択時
+        } else { // when item not selected
 
             cutAction.setEnabled(false);
             copyAction.setEnabled(false);
@@ -287,9 +278,7 @@ private void setActionStates(TreeViewTreeNode node) {
         }
     }
 
-    // -------------------------------------------------------------------------
-
-    /** ノードを開�アクション */
+    /** "Open" action */
     private Action openAction = new AbstractAction(rb.getString("action.open"), (ImageIcon) UIManager.get("treeView.openIcon")) {
 
         public void actionPerformed(ActionEvent ev) {
@@ -302,7 +291,7 @@ public void actionPerformed(ActionEvent ev) {
     };
 
     /**
-     * オープン�処�を行���．
+     * Processes "Open".
      * 
      * @param node
      */
@@ -316,7 +305,7 @@ private void open(TreeViewTreeNode node) {
         }
     }
 
-    /** オブジェクトをカット�るアクション */
+    /** "Cut" action */
     private Action cutAction = new AbstractAction(rb.getString("action.cut"), (ImageIcon) UIManager.get("treeView.cutIcon")) {
 
         public void actionPerformed(ActionEvent ev) {
@@ -330,7 +319,7 @@ public void actionPerformed(ActionEvent ev) {
         }
     };
 
-    /** オブジェクトをコピー�るアクション */
+    /** "Copy" action */
     private Action copyAction = new AbstractAction(rb.getString("action.copy"), (ImageIcon) UIManager.get("treeView.copyIcon")) {
 
         public void actionPerformed(ActionEvent ev) {
@@ -344,7 +333,7 @@ public void actionPerformed(ActionEvent ev) {
         }
     };
 
-    /** オブジェクトをペースト�るアクション */
+    /** "Paste" action */
     private Action pasteAction = new AbstractAction(rb.getString("action.paste"), (ImageIcon) UIManager.get("treeView.pasteIcon")) {
 
         public void actionPerformed(ActionEvent ev) {
@@ -358,14 +347,14 @@ public void actionPerformed(ActionEvent ev) {
         }
     };
 
-    /** オブジェクトを削除�るアクション */
+    /** "Delete" action */
     private Action deleteAction = new AbstractAction(rb.getString("action.delete"), (ImageIcon) UIManager.get("treeView.deleteIcon")) {
 
         public void actionPerformed(ActionEvent ev) {
             try {
                 statusBar.setText(rb.getString("action.delete.start"));
 
-                // ダイアログ�削除�確�を���．
+                // show confirm dialog
                 if (JOptionPane.showConfirmDialog(null, rb.getString("action.delete.dialog"), rb.getString("dialog.title.confirm"), JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION) {
 
                     editor.delete();
@@ -378,7 +367,7 @@ public void actionPerformed(ActionEvent ev) {
         }
     };
 
-    /** ツリービューを終了�るアクション */
+    /** "Exit" action */
     private Action exitAction = new AbstractAction(rb.getString("action.exit")) {
 
         public void actionPerformed(ActionEvent ev) {
@@ -401,7 +390,7 @@ public void actionPerformed(ActionEvent ev) {
     /** */
     private static final RegexFileFilter fileFilter = new RegexFileFilter(".+\\.xml", "XML File");
 
-    /** �期ツリー�セーブを行�アクション */
+    /** "Save" action */
     private Action saveAction = new AbstractAction(rb.getString("action.save")) {
         private JFileChooser fc = new JFileChooser();
         {
@@ -416,7 +405,7 @@ public void actionPerformed(ActionEvent ev) {
                     return;
                 }
                 File file = fc.getSelectedFile();
-                OutputStream os = new BufferedOutputStream(new FileOutputStream(file));
+                OutputStream os = new BufferedOutputStream(Files.newOutputStream(file.toPath()));
 
                 save(os);
             } catch (Exception e) {
@@ -425,7 +414,7 @@ public void actionPerformed(ActionEvent ev) {
         }
     };
 
-    /** �ージョン表示を行�アクション */
+    /** "About" action */
     private Action showVersionAction = new AbstractAction(rb.getString("action.showVersion")) {
 
         public void actionPerformed(ActionEvent ev) {
@@ -435,55 +424,51 @@ public void actionPerformed(ActionEvent ev) {
         }
     };
 
-    /** 使用説明�表示を行�アクション */
+    /** "Help" action */
     private Action showManualAction = new AbstractAction(rb.getString("action.showManual")) {
 
         public void actionPerformed(ActionEvent ev) {
             try {
-                Runtime.getRuntime().exec(props.getProperty("tv.path.browser") + " " + props.getProperty("tv.url.manual"));
+                Runtime.getRuntime().exec(new String[] {props.getProperty("tv.path.browser"), props.getProperty("tv.url.manual")});
             } catch (Exception e) {
                 showError(e);
             }
         }
     };
 
-    /** エラーメッセージ�ダイアログを表示���． */
+    /** Shows error dialog */
     private void showError(Exception e) {
-        // Debug.printStackTrace(e);
+// Debug.printStackTrace(e);
         statusBar.setText(e.getMessage());
         JOptionPane.showMessageDialog(null, e.getMessage(), rb.getString("dialog.title.error"), JOptionPane.ERROR_MESSAGE);
     }
 
-    // -------------------------------------------------------------------------
-
     /** */
-    private EditorListener el = new EditorListener() {
-        @SuppressWarnings("unchecked")
-        public void editorUpdated(EditorEvent ev) {
-            String name = ev.getName();
-            if ("select".equals(name)) {
-                select((List<TreeViewTreeNode>) ev.getArgument());
-            } else if ("expand".equals(name)) {
-                expand((TreeViewTreeNode) ev.getArgument());
-            } else if ("popupMenu".equals(name)) {
-                Object[] args = (Object[]) ev.getArgument();
-                showPopupMenu((TreeViewTreeNode) args[0], (Point) args[1]);
-            } else if ("rename".equals(name)) {
-                Object[] args = (Object[]) ev.getArgument();
-                rename((TreeViewTreeNode) args[0], (String) args[1]);
-            } else if ("cut".equals(name)) {
-                isPastable = true;
-            } else if ("copy".equals(name)) {
-                isPastable = true;
-            } else if ("lostOwnership".equals(name)) {
-                isPastable = false;
-            }
+    @SuppressWarnings("unchecked")
+    private EditorListener el = ev -> {
+        String name = ev.getName();
+        if ("select".equals(name)) {
+            select((List<TreeViewTreeNode>) ev.getArgument());
+        } else if ("expand".equals(name)) {
+            expand((TreeViewTreeNode) ev.getArgument());
+        } else if ("popupMenu".equals(name)) {
+            Object[] args = (Object[]) ev.getArgument();
+            showPopupMenu((TreeViewTreeNode) args[0], (Point) args[1]);
+        } else if ("rename".equals(name)) {
+            Object[] args = (Object[]) ev.getArgument();
+            rename((TreeViewTreeNode) args[0], (String) args[1]);
+        } else if ("cut".equals(name)) {
+            isPastable = true;
+        } else if ("copy".equals(name)) {
+            isPastable = true;
+        } else if ("lostOwnership".equals(name)) {
+            isPastable = false;
         }
     };
 
     /** */
     private void select(List<TreeViewTreeNode> selection) {
-        if (selection.size() == 1) { // アイテム(�体)�択時
+        if (selection.size() == 1) { // one item selected
             TreeViewTreeNode node = selection.get(0);
             statusBar.setText(node.getUserObject().toString());
             setActionStates(node);
@@ -524,42 +509,35 @@ private void rename(TreeViewTreeNode node, String newValue) {
         }
     }
 
-    // -------------------------------------------------------------------------
-
-    /** EditorEvent 機構�ユーティリティ */
+    /** EditorEvent utility */
     private EditorSupport editorSupport = new EditorSupport();
 
-    /** Editor リスナーを追加���． */
+    /** Adds an Editor listener. */
     public void addEditorListener(EditorListener l) {
         editorSupport.addEditorListener(l);
     }
 
-    /** Editor リスナーを削除���． */
+    /** Removes an Editor listener. */
     public void removeEditorListener(EditorListener l) {
         editorSupport.removeEditorListener(l);
     }
 
-    /** EditorEvent を発行���． */
+    /** Fires an Editor event. */
     protected void fireEditorUpdated(EditorEvent ev) {
         editorSupport.fireEditorUpdated(ev);
     }
 
-    // -------------------------------------------------------------------------
-
-    /** プロパティ */
+    /** */
     static Properties props = new Properties();
 
-    /**
-     * �期化���．
-     */
+    /* */
     static {
         final String path = "TreeView.properties";
         final Class<?> clazz = TreeView.class;
 
         try {
-            Properties ps = new Properties();
             InputStream is = clazz.getResourceAsStream(path);
-            ps.load(is);
+            props.load(is);
             is.close();
 
             Toolkit t = Toolkit.getDefaultToolkit();
@@ -581,30 +559,10 @@ protected void fireEditorUpdated(EditorEvent ev) {
 
                 i++;
             }
-
-            props = new Properties();
-            is = clazz.getResourceAsStream("/local.properties");
-            props.load(is);
-            is.close();
         } catch (Exception e) {
-            e.printStackTrace();;
-            System.exit(1);
+            throw new IllegalStateException(e);
         }
     }
-
-    // -------------------------------------------------------------------------
-
-    /**
-     * プログラムエントリ��．
-     */
-    public static void main(String[] args) throws Exception {
-
-        TreeView tree = new TreeView();
-
-        JFrame frame = new TreeViewFrame(tree);
-        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
-        frame.setVisible(true);
-    }
 }
 
 /* */
diff --git a/src/main/java/vavi/apps/treeView/TreeViewFrame.java b/src/main/java/vavi/apps/treeView/TreeViewFrame.java
index 66b12a2..70a514e 100644
--- a/src/main/java/vavi/apps/treeView/TreeViewFrame.java
+++ b/src/main/java/vavi/apps/treeView/TreeViewFrame.java
@@ -8,9 +8,12 @@
 
 import java.awt.BorderLayout;
 import java.awt.Dimension;
+import java.awt.event.ComponentAdapter;
+import java.awt.event.ComponentEvent;
 import java.util.Locale;
 import java.util.Properties;
 import java.util.ResourceBundle;
+import java.util.prefs.Preferences;
 
 import javax.swing.JDesktopPane;
 import javax.swing.JFrame;
@@ -19,6 +22,8 @@
 import javax.swing.JSplitPane;
 import javax.swing.border.BevelBorder;
 
+import vavi.util.Debug;
+
 
 /**
  * TreeView をアプリケーション���使用�る際�フレーム��．
@@ -44,14 +49,11 @@ public TreeViewFrame(TreeView treeView) {
 
         JLabel statusBar = treeView.getStatusBar();
         statusBar.setBorder(new BevelBorder(BevelBorder.LOWERED));
-        /*
-         * statusBar.setPreferredSize(new Dimension( statusBar.getWidth() + statusBar.getInsets().left +
-         * statusBar.getInsets().right, statusBar.getHeight() + statusBar.getInsets().top + statusBar.getInsets().bottom));
-         * Debug.println("status bar: " + statusBar.getWidth() + ", " + statusBar.getHeight()); Debug.println("status bar: " +
-         * statusBar.getPreferredSize().width + ", " + statusBar.getPreferredSize().height); Debug.println("status bar: " +
-         * statusBar.getWidth() + statusBar.getInsets().left + statusBar.getInsets().right + ", " + statusBar.getHeight() +
-         * statusBar.getInsets().top + statusBar.getInsets().bottom);
-         */
+
+//statusBar.setPreferredSize(new Dimension(statusBar.getWidth() + statusBar.getInsets().left + statusBar.getInsets().right, statusBar.getHeight() + statusBar.getInsets().top + statusBar.getInsets().bottom));
+//Debug.println("status bar: " + statusBar.getWidth() + ", " + statusBar.getHeight());
+//Debug.println("status bar: " + statusBar.getPreferredSize().width + ", " + statusBar.getPreferredSize().height);
+//Debug.println("status bar: " + statusBar.getWidth() + statusBar.getInsets().left + statusBar.getInsets().right + ", " + statusBar.getHeight() + statusBar.getInsets().top + statusBar.getInsets().bottom);
 
         Dimension d = this.getToolkit().getScreenSize();
 
@@ -59,6 +61,12 @@ public TreeViewFrame(TreeView treeView) {
         scrollPane.setPreferredSize(new Dimension(d.width / 5, d.height));
 
         JSplitPane sp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, scrollPane, desktop);
+        sp.addPropertyChangeListener(JSplitPane.DIVIDER_LOCATION_PROPERTY, e -> {
+Debug.println("split out: " + (double) (int) e.getNewValue() / sp.getMaximumDividerLocation());
+            prefs.putDouble("tv.frame.split", (double) (int) e.getNewValue() / sp.getMaximumDividerLocation());
+        });
+Debug.println("split in: " + prefs.getDouble("tv.frame.split", 0.3));
+        sp.setDividerLocation(prefs.getDouble("tv.frame.split", 0.3));
 
         setJMenuBar(treeView.getMenuBar());
         getContentPane().add(treeView.getToolBar(), BorderLayout.NORTH);
@@ -67,13 +75,28 @@ public TreeViewFrame(TreeView treeView) {
 
         setSize(d.width * 6 / 7, d.height * 6 / 7);
 
-        setSize(FRAME_WIDTH, FRAME_HEIGHT);
-        setLocation(FRAME_X, FRAME_Y);
-
-        validate();
+        int width = prefs.getInt("tv.frame.width", 800);
+        int height = prefs.getInt("tv.frame.height", 640);
+        int x = prefs.getInt("tv.frame.x", 100);
+        int y = prefs.getInt("tv.frame.y", 200);
+
+        setPreferredSize(new Dimension(width, height));
+        setLocation(x, y);
+
+        pack();
+
+        addComponentListener(new ComponentAdapter() {
+            @Override public void componentResized(ComponentEvent e) {
+                prefs.putInt("tv.frame.width", getWidth());
+                prefs.putInt("tv.frame.height", getHeight());
+            }
+            @Override public void componentMoved(ComponentEvent e) {
+                prefs.putInt("tv.frame.x", getX());
+                prefs.putInt("tv.frame.y", getY());
+            }
+        });
     }
 
-    // -------------------------------------------------------------------------
 
     /**
      * Gets the virtual desktop.
@@ -82,28 +105,8 @@ public JDesktopPane getUI() {
         return desktop;
     }
 
-    // -------------------------------------------------------------------------
-
-    /** å¹… */
-    private static final int FRAME_WIDTH;
-
-    /** 高� */
-    private static final int FRAME_HEIGHT;
-
-    /** 横��置 */
-    private static final int FRAME_X;
-
-    /** 縦��置 */
-    private static final int FRAME_Y;
-
-    static {
-        Properties props = TreeView.props;
-
-        FRAME_WIDTH = Integer.parseInt(props.getProperty("tv.frame.width"));
-        FRAME_HEIGHT = Integer.parseInt(props.getProperty("tv.frame.height"));
-        FRAME_X = Integer.parseInt(props.getProperty("tv.frame.x"));
-        FRAME_Y = Integer.parseInt(props.getProperty("tv.frame.y"));
-    }
+    /** */
+    private static Preferences prefs = Preferences.userNodeForPackage(TreeView.class);
 }
 
 /* */
diff --git a/src/main/java/vavi/apps/treeView/TreeViewTree.java b/src/main/java/vavi/apps/treeView/TreeViewTree.java
index c4e58ac..67fbebb 100644
--- a/src/main/java/vavi/apps/treeView/TreeViewTree.java
+++ b/src/main/java/vavi/apps/treeView/TreeViewTree.java
@@ -49,7 +49,7 @@
 /**
  * ツリービュー��．
  * 
- * @todo 複数 DnD
+ * TODO 複数 DnD
  * 
  * @event EditorEvent("expand")
  * @event EditorEvent("popupMenu")
@@ -62,18 +62,23 @@
 public class TreeViewTree extends JTree {
 
     /**
-     * �画ツリーを作����．
-     * 
      * @param root ツリー�モデル
      */
-    public TreeViewTree(TreeViewTreeNode root) {
+    public void setRoot(TreeViewTreeNode root) {
 
         root.addEditorListener(el);
 
         TreeViewTreeModel treeModel = new TreeViewTreeModel(root);
-        setModel(treeModel);
+        super.setModel(treeModel);
+    }
+
+    /**
+     * �画ツリーを作����．
+     */
+    public TreeViewTree() {
+
         setCellRenderer(tcr);
-        // rename ��るよ���る
+        // make the tree view able to rename
         setEditable(true);
 
         addMouseListener(ml);
@@ -89,7 +94,7 @@ public TreeViewTree(TreeViewTreeNode root) {
                 image = (Image) UIManager.get("treeViewTree.dragImage");
             }
 
-            /** Transferable データを�得���． */
+            /** gets Transferable */
             protected Transferable getTransferable(DragGestureEvent ev) {
                 TreeViewTreeNode node = getTreeNode();
                 if (node == null) {
@@ -110,21 +115,21 @@ protected Transferable getTransferable(DragGestureEvent ev) {
                 }
             }
 
-            /** DnD を終了���． */
+            /** terminates DnD */
             protected void dragDropEnd(DragSourceEvent ev) {
 Debug.println("here");
                 setEditable(true);
             }
         };
 
-        // ドロップ�れる��クラス
+        // the class to drop
         new DropTarget(this, DnDConstants.ACTION_COPY_OR_MOVE, new TreeViewTreeDTListener(this), true);
     }
 
     // -------------------------------------------------------------------------
 
     /**
-     * �択�れ��るツリーノードを返���．
+     * Returns a selected tree node.
      * 
      * @return a selected tree node
      */
@@ -138,7 +143,7 @@ public TreeViewTreeNode getTreeNode() {
     }
 
     /**
-     * �在�マウス��ジション��るツリーノードを返���．
+     * Returns a node that located at mouse pointer.
      * 
      * @param x x point of mouse
      * @param y y point of mouse
@@ -154,9 +159,9 @@ private TreeViewTreeNode getTreeNode(int x, int y) {
     }
 
     /**
-     * TreeViewTree �セレクションリスナ��．
+     * The selection listener for TreeViewTree.
      */
-    private TreeSelectionListener tsl = new TreeSelectionListener() {
+    private final TreeSelectionListener tsl = new TreeSelectionListener() {
         /** ツリー��択�変更�れ�場��呼�れ��． */
         public void valueChanged(TreeSelectionEvent ev) {
 
@@ -166,8 +171,8 @@ public void valueChanged(TreeSelectionEvent ev) {
             }
 
             Vector<Object> selection = new Vector<>();
-            for (int i = 0; i < selected.length; i++) {
-                selection.addElement(selected[i].getLastPathComponent());
+            for (TreePath treePath : selected) {
+                selection.addElement(treePath.getLastPathComponent());
             }
 
             // TreeViewActions
@@ -176,9 +181,9 @@ public void valueChanged(TreeSelectionEvent ev) {
     };
 
     /**
-     * ツリー上�マウス�イベント処�を行�クラス��．
+     * Process mouse events for the tree.
      */
-    private MouseListener ml = new MouseAdapter() {
+    private final MouseListener ml = new MouseAdapter() {
 
         /** マウス�クリック�れ���呼�れ��． */
         public void mouseClicked(MouseEvent ev) {
@@ -189,7 +194,7 @@ public void mouseClicked(MouseEvent ev) {
                                                   TreeViewTree.this, "expand", node));
             }
 
-            // �ップアップメニューを���置�表示�る
+            // display the popup menu at the mouse cursor
             if (SwingUtilities.isRightMouseButton(ev)) {
                 // if (ev.getModifiers() == MouseEvent.BUTTON3_MASK) {
                 // if (ev.isPopupTrigger()) {
@@ -203,9 +208,9 @@ public void mouseClicked(MouseEvent ev) {
     };
 
     /**
-     * ツリー�モデル�クラス��．
+     * Thr tree model.
      * 
-     * @version 000214 nsano fix not renamable node bug.
+     * @version 000214 nsano fix not able to rename node bug.
      */
     private final class TreeViewTreeModel extends DefaultTreeModel {
         /** */
@@ -222,20 +227,16 @@ public void valueForPathChanged(TreePath path, Object newValue) {
         }
     }
 
-    // -------------------------------------------------------------------------
-
     /** */
-    private EditorListener el = new EditorListener() {
-        public void editorUpdated(EditorEvent ev) {
-            String name = ev.getName();
-            if ("expand".equals(name)) { // フォルダ�展開
-                expand((TreePath) ev.getArgument());
-            } else if ("delete".equals(name)) { // 削除
-                Object[] args = (Object[]) ev.getArgument();
-                delete((TreeNode) args[0], (int[]) args[1], (TreeNode[]) args[2]);
-            } else if ("insert".equals(name)) { // 追加
-                insert((TreeNode) ev.getArgument());
-            }
+    private final EditorListener el = ev -> {
+        String name = ev.getName();
+        if ("expand".equals(name)) { // expands folders
+            expand((TreePath) ev.getArgument());
+        } else if ("delete".equals(name)) { // remove
+            Object[] args = (Object[]) ev.getArgument();
+            delete((TreeNode) args[0], (int[]) args[1], (TreeNode[]) args[2]);
+        } else if ("insert".equals(name)) { // insert
+            insert((TreeNode) ev.getArgument());
         }
     };
 
@@ -256,10 +257,8 @@ private void insert(TreeNode node) {
         treeModel.nodeStructureChanged(node);
     }
 
-    // -------------------------------------------------------------------------
-
     /**
-     * ツリー�セルレンダラ�クラス��．
+     * The tree cell renderer.
      */
     private TreeCellRenderer tcr = new DefaultTreeCellRenderer() {
         /**
@@ -272,10 +271,14 @@ public Component getTreeCellRendererComponent(JTree tree, Object value, boolean
 
             this.hasFocus = hasFocus;
 
+            if (!(value instanceof TreeViewTreeNode)) {
+                return this;
+            }
+
             TreeViewTreeNode node = (TreeViewTreeNode) value;
-            // Debug.println(Debug.DEBUG, "node: " + node);
+// Debug.println(Debug.DEBUG, "node: " + node);
             Object data = node.getUserObject();
-            // Debug.println(Debug.DEBUG, "data: " + data);
+// Debug.println(Debug.DEBUG, "data: " + data);
 
             /* Set the text. */
             setText(data.toString());
@@ -293,7 +296,7 @@ public Component getTreeCellRendererComponent(JTree tree, Object value, boolean
 
             try {
                 Class<?> beanClass = data.getClass();
-                // Debug.println(beanClass);
+//Debug.println(beanClass);
                 BeanInfo info = Introspector.getBeanInfo(beanClass);
                 /* Set the image. */
                 Image image;
@@ -316,7 +319,7 @@ public Component getTreeCellRendererComponent(JTree tree, Object value, boolean
                 Debug.println(Level.SEVERE, e);
             }
 
-            // Debug.println(Debug.DEBUG, item);
+//Debug.println(Debug.DEBUG, item);
             /* Set the image. */
             if (node.isCut()) {
                 setIcon(UIManager.getIcon("treeViewTree.markIcon"));
@@ -343,35 +346,31 @@ public Component getTreeCellRendererComponent(JTree tree, Object value, boolean
         }
     };
 
-    // -------------------------------------------------------------------------
-
-    /** EditorEvent 機構�ユーティリティ */
+    /** EditorEvent utility */
     private EditorSupport editorSupport = new EditorSupport();
 
-    /** Editor リスナーを追加���． */
+    /** Adds an Editor listener. */
     public void addEditorListener(EditorListener l) {
         editorSupport.addEditorListener(l);
     }
 
-    /** Editor リスナーを削除���． */
+    /** Removes an Editor listener. */
     public void removeEditorListener(EditorListener l) {
         editorSupport.removeEditorListener(l);
     }
 
-    /** EditorEvent を発行���． */
+    /** Fires an Editor event. */
     protected void fireEditorUpdated(EditorEvent ev) {
         editorSupport.fireEditorUpdated(ev);
     }
 
-    // -------------------------------------------------------------------------
-
     static {
         Toolkit t = Toolkit.getDefaultToolkit();
         Class<?> clazz = TreeViewTree.class;
         UIDefaults table = UIManager.getDefaults();
-        table.put("treeViewTree.markIcon", LookAndFeel.makeIcon(clazz, "resources/mark.png"));
-        table.put("treeViewTree.defaultIcon", LookAndFeel.makeIcon(clazz, "resources/default_file.png"));
-        table.put("treeViewTree.dragImage", t.getImage(clazz.getResource("resources/default_file.png")));
+        table.put("treeViewTree.markIcon", LookAndFeel.makeIcon(clazz, "node/mark.png"));
+        table.put("treeViewTree.defaultIcon", LookAndFeel.makeIcon(clazz, "node/default_file.png"));
+        table.put("treeViewTree.dragImage", t.getImage(clazz.getResource("node/default_file.png")));
     }
 }
 
diff --git a/src/main/java/vavi/apps/treeView/TreeViewTreeNode.java b/src/main/java/vavi/apps/treeView/TreeViewTreeNode.java
index c703454..20abd5b 100644
--- a/src/main/java/vavi/apps/treeView/TreeViewTreeNode.java
+++ b/src/main/java/vavi/apps/treeView/TreeViewTreeNode.java
@@ -62,8 +62,6 @@ public String toString() {
     public void setActionStates() {
     }
 
-    // -------------------------------------------------------------------------
-
     /**
      * オープン���．
      * 
@@ -128,8 +126,6 @@ public void delete() throws TreeViewException {
         throw new TreeViewException(rb.getString("action.delete.error"));
     }
 
-    // -------------------------------------------------------------------------
-
     /** オープン����ビューを変更���． */
     protected void openController() {
         fireEditorUpdated(new EditorEvent(this, "expand", new TreePath(getPath())));
@@ -209,8 +205,6 @@ public boolean canDelete() {
         return false;
     }
 
-    // -------------------------------------------------------------------------
-
     /**
      * {@link DefaultMutableTreeNode#getUserObject()} � transient ��。
      * ��ツリーノードを直列化�る���オー�ライド���。
@@ -234,8 +228,6 @@ public Object getUserObject() {
         return userObject;
     }
 
-    //----
-
     /** EditorEvent 機構�ユーティリティ */
     private static EditorSupport editorSupport = new EditorSupport();
 
@@ -254,8 +246,6 @@ protected void fireEditorUpdated(EditorEvent ev) {
         editorSupport.fireEditorUpdated(ev);
     }
 
-    //----
-
     private boolean isSelected;
 
     /** */
diff --git a/src/main/java/vavi/apps/treeView/node/package.html b/src/main/java/vavi/apps/treeView/node/package.html
deleted file mode 100644
index b1224d6..0000000
--- a/src/main/java/vavi/apps/treeView/node/package.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<html>
-
-<head>
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<title>vavi.apps.treeView.node</title>
-<style type="text/css">
-<!--
-strike {
-    color:	#808080;
-}
-//-->
-</style>
-<!--
- * Copyright (c) 2001 by Naohide Sano, All rights reserved.
- *
- * Written by Naohide Sano
- *
- * @author	<a href="mailto:vavivavi@yahoo.co.jp">Naohide Sano</a> (nsano)
- *
- * @version	0.00	010822	nsano	initial version
--->
-</head>
-
-<body>
-
-<p>
-ツリービューを実装�る���ノードを�供���．
-</p>
-
-<p>
-�れ�ら実装�る��
-</p>
-
-<ul>
-<li>
-<li>
-</ul>
-
-</body>
-
-</html>
diff --git a/src/main/java/vavi/apps/treeView/package-info.java b/src/main/java/vavi/apps/treeView/package-info.java
new file mode 100644
index 0000000..7ba4f3b
--- /dev/null
+++ b/src/main/java/vavi/apps/treeView/package-info.java
@@ -0,0 +1,14 @@
+/**
+ * Provides TreeView classes.
+ * <p>
+ * TODO
+ *  * make "userObject" "java beans"
+ *  * tell node modification to user object via messaging (observer, observable?)
+ *  * pluggable menu
+ *  * create menus by extracting verbs from a bean
+ *  * multiple DnD
+ *  * right panel is "beans property editor"
+ *  * try PropertyResourceBundle
+ */
+package vavi.apps.treeView;
+
diff --git a/src/main/java/vavi/apps/treeView/package.html b/src/main/java/vavi/apps/treeView/package.html
deleted file mode 100644
index 45c537b..0000000
--- a/src/main/java/vavi/apps/treeView/package.html
+++ /dev/null
@@ -1,53 +0,0 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<html lang="ja">
-
-<head>
-<link rev="MADE" href="mailto:vavivavi@yahoo.co.jp">
-<link rel="INDEX" href="orverview.html">
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-<meta http-equiv="Content-Style-Type" content="text/css">
-<link rel="stylesheet" type="text/css" href="../../../vavi.css">
-<title>vavi.apps.treeView</title>
-<!--
- * Copyright (c) 2001 by Naohide Sano, All rights reserved.
- *
- * Written by Naohide Sano
- *
- * @author	<a href="mailto:vavivavi@yahoo.co.jp">Naohide Sano</a> (nsano)
- *
- * @version	0.00	010822	nsano	initial version
--->
-</head>
-
-<body>
-
-<p>
-ツリービューを実装�る���基本クラスを�供���．
-</p>
-
-<h2>
-習作
-</h2>
-
-<ul>
-<li>{@link vavi.apps.treeView.XMLSaver} �新�� XML ドキュメントを作��るサンプル�������．
-<li>
-</ul>
-
-<h2>
-�れ�ら実装�る��
-</h2>
-
-<ul>
-<li>userObject を java beans ��る</li>
-<li>ノード�変更をユーザオブジェクト�メッセージング�知ら�る(observer, observable?)</li>
-<li>プラガブルメニュー</li>
-<li>ビーンズ�ら動詞を�得��メニューを作�</li>
-<li>複数ドラッグアンドドロップ</li>
-<li>��パ�ル�ビーンズ�プロパティエディタ</li>
-<li>PropertyResourceBundle を使���る</li>
-</ul>
-
-</body>
-
-</html>
diff --git a/src/main/java/vavi/swing/binding/treeview/TreeView.java b/src/main/java/vavi/swing/binding/treeview/TreeView.java
new file mode 100644
index 0000000..d5d7d82
--- /dev/null
+++ b/src/main/java/vavi/swing/binding/treeview/TreeView.java
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2022 by Naohide Sano, All rights reserved.
+ *
+ * Programmed by Naohide Sano
+ */
+
+package vavi.swing.binding.treeview;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.NoSuchElementException;
+
+import vavi.apps.treeView.TreeViewTreeNode;
+
+
+/**
+ * TreeView.
+ *
+ * @author <a href="mailto:umjammer@gmail.com">Naohide Sano</a> (nsano)
+ * @version 0.00 2022/12/11 nsano initial version <br>
+ */
+@Target({ ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface TreeView {
+
+    String init() default "init";
+
+    String load() default "load";
+
+    String save() default "save";
+
+    /**
+     * TODO when annotated to method
+     */
+    class Util {
+
+        private Util() {
+        }
+
+        /** */
+        public static InputStream init(Object bean) {
+            //
+            TreeView annotation = bean.getClass().getAnnotation(TreeView.class);
+            if (annotation == null) {
+                throw new IllegalArgumentException("bean is not annotated with @TreeView");
+            }
+
+            String name = annotation.init();
+
+            Class<?> clazz = bean.getClass();
+            while (clazz != null) {
+                for (Method method : clazz.getDeclaredMethods()) {
+                    if (method.getName().equals(name)) {
+                        try {
+                            return (InputStream) method.invoke(bean);
+                        } catch (IllegalAccessException | InvocationTargetException e) {
+                            throw new IllegalStateException(e);
+                        }
+                    }
+                }
+                clazz = clazz.getSuperclass();
+            }
+
+            throw new NoSuchElementException(name);
+        }
+
+        /** */
+        public static TreeViewTreeNode load(Object bean, InputStream is) {
+            //
+            TreeView annotation = bean.getClass().getAnnotation(TreeView.class);
+            if (annotation == null) {
+                throw new IllegalArgumentException("bean is not annotated with @TreeView");
+            }
+
+            String name = annotation.load();
+
+            Class<?> clazz = bean.getClass();
+            while (clazz != null) {
+                for (Method method : clazz.getDeclaredMethods()) {
+                    if (method.getName().equals(name)) {
+                        try {
+                            return (TreeViewTreeNode) method.invoke(bean, is);
+                        } catch (IllegalAccessException | InvocationTargetException e) {
+                            throw new IllegalStateException(e);
+                        }
+                    }
+                }
+                clazz = clazz.getSuperclass();
+            }
+
+            throw new NoSuchElementException(name);
+        }
+
+        /** */
+        public static void save(Object bean, OutputStream os, TreeViewTreeNode root) {
+            //
+            TreeView annotation = bean.getClass().getAnnotation(TreeView.class);
+            if (annotation == null) {
+                throw new IllegalArgumentException("bean is not annotated with @TreeView");
+            }
+
+            String name = annotation.save();
+
+            Class<?> clazz = bean.getClass();
+            while (clazz != null) {
+                for (Method method : clazz.getDeclaredMethods()) {
+                    if (method.getName().equals(name)) {
+                        try {
+                            method.invoke(bean, os, root);
+                            return;
+                        } catch (IllegalAccessException | InvocationTargetException e) {
+                            throw new IllegalStateException(e);
+                        }
+                    }
+                }
+                clazz = clazz.getSuperclass();
+            }
+
+            throw new NoSuchElementException(name);
+        }
+    }
+}
+
+/* */
diff --git a/src/main/resources/vavi/apps/treeView/TreeViewResource_ja.properties b/src/main/native2ascii/vavi/apps/treeView/TreeViewResource_ja_JP.properties
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/TreeViewResource_ja.properties
rename to src/main/native2ascii/vavi/apps/treeView/TreeViewResource_ja_JP.properties
diff --git a/src/main/native2ascii/vavi/apps/treeView/ja.properties b/src/main/native2ascii/vavi/apps/treeView/ja.properties
deleted file mode 100644
index 9f96321..0000000
--- a/src/main/native2ascii/vavi/apps/treeView/ja.properties
+++ /dev/null
@@ -1,140 +0,0 @@
-#
-# Copyright (c) 2001 by Naohide Sano, All rights reserved.
-#
-# Programmed by Naohide Sano
-#
-# TreeView ‚ÅŽg—p‚³‚ê‚éƒ�ƒbƒZ�[ƒW‚̃Šƒ\�[ƒX(“ú–{Œê)‚Å‚·�D
-#
-# @author	<a href=mailto:vavivavi@yahoo.co.jp>Naohide Sano</a> (nsano)
-# @version	0.00	010820	nsano	initial version <br>
-# 		1.00	010909	nsano	refine <br>
-#		2.00	010909	nsano	use PropertyResourceBundle <br>
-#
-
-#
-# ƒo�[ƒWƒ‡ƒ“�î•ñ 
-#
-version.title=ƒcƒŠ�[ƒrƒ…�[
-version.copyright=Copyright (c) 2001-2002 by Naohide Sano
-version.revision=Ver. 0.20
-version.build=2002-05-22
-
-#
-# TreeViewActions
-#
-menu.file=ƒtƒ@ƒCƒ‹(F)
-action.open=ŠJ‚­
-action.save=•Û‘¶
-action.exit=�I—¹
-
-menu.edit=•Ò�W(E)
-action.cut=�Ø‚èŽæ‚è
-action.copy=ƒRƒs�[
-action.paste=“\‚è•t‚¯
-action.delete=��
-
-menu.object=ƒIƒuƒWƒFƒNƒg(O)
-
-menu.window=ƒEƒCƒ“ƒhƒE(W)
-
-menu.help=ƒwƒ‹ƒv(H)
-action.showVersion=ƒo�[ƒWƒ‡ƒ“�î•ñ
-action.showManual=ƒwƒ‹ƒv
-
-#
-# exit
-#
-action.exit.dialog=�I—¹‚µ‚Ä‚à‚æ‚낵‚¢‚Å‚·‚©�H
-
-#
-# new
-#
-action.new.start=�V‹K�ì�¬‚µ‚Ü‚·�D
-action.new.end=�V‹K�ì�¬‚µ‚Ü‚µ‚½�D
-action.new.error=�V‹K�ì�¬‚Å‚«‚Ü‚¹‚ñ�D
-
-#
-# open
-#
-action.open.start=ŠJ‚«‚Ü‚·�D
-action.open.end=ŠJ‚«‚Ü‚µ‚½�D
-action.open.error=ŠJ‚¯‚Ü‚¹‚ñ�D
-
-#
-# insert
-#
-action.insert.start=’ljÁ‚µ‚Ü‚µ‚½�D
-action.insert.error=’ljÁ‚Å‚«‚Ü‚¹‚ñ�D
-
-#
-# rename
-#
-action.rename.error=–¼‘O‚ð•Ï�X‚Å‚«‚Ü‚¹‚ñ�D
-
-#
-# cut
-#
-action.cut.start=ƒJƒbƒg‚µ‚Ü‚·�D
-action.cut.end=ƒJƒbƒg‚µ‚Ü‚µ‚½�D
-action.cut.error=ƒJƒbƒg‚Å‚«‚Ü‚¹‚ñ�D
-
-#
-# copy
-#
-action.copy.start=ƒRƒs�[‚µ‚Ü‚·�D
-action.copy.end=ƒRƒs�[‚µ‚Ü‚µ‚½�D
-action.copy.error=ƒRƒs�[‚Å‚«‚Ü‚¹‚ñ�D
-
-#
-# paste
-#
-action.paste.start=“\‚è•t‚¯‚Ü‚·�D
-action.paste.end=“\‚è•t‚¯‚Ü‚µ‚½�D
-action.paste.error=“\‚è•t‚¯‚ç‚ê‚Ü‚¹‚ñ�D
-action.paste.nest=ƒlƒXƒg‚µ‚Ä‚¢‚é‚Ì‚Å“\‚è•t‚¯‚ç‚ê‚Ü‚¹‚ñ�D
-action.paste.same=“¯‚¶�ê�Š‚É“\‚è•t‚¯‚ç‚ê‚Ü‚¹‚ñ�D
-
-#
-# delete
-#
-action.delete.start=�í�œ‚µ‚Ü‚·�D
-action.delete.end=�í�œ‚µ‚Ü‚µ‚½�D
-action.delete.dialog=‚ð�í�œ‚µ‚Ä‚à‚æ‚낵‚¢‚Å‚·‚©�H
-action.delete.error=�í�œ‚Å‚«‚Ü‚¹‚ñ�D
-
-#
-# setProperty
-#
-action.setProperty.start=ƒvƒ�ƒpƒeƒB‚ð•Ï�X‚µ‚Ü‚·�D
-action.setProperty.end=ƒvƒ�ƒpƒeƒB‚ð•Ï�X‚µ‚Ü‚µ‚½�D
-action.setProperty.error=ƒvƒ�ƒpƒeƒB‚ð•Ï�X‚Å‚«‚Ü‚¹‚ñ‚Å‚µ‚½�D
-action.setProperty.cancel=ƒvƒ�ƒpƒeƒB‚Ì•Ï�X‚𒆎~‚µ‚Ü‚µ‚½�D
-
-#
-# status bar
-#
-statusBar.welcome=‚悤‚±‚»ƒcƒŠ�[ƒrƒ…�[‚Ö�I
-
-#
-# dialog title
-#
-dialog.title.error=ƒGƒ‰�[
-dialog.title.confirm=Šm”F
-dialog.title.showVersion=�î•ñ
-dialog.title.exit=�I—¹
-
-#
-# TreeViewConstants
-#
-property.file=‚Ì‘¶�Ý‚ðŠm‚©‚߂ĉº‚³‚¢�I
-property.value=ƒvƒ�ƒpƒeƒB‚Ì’l‚ª�³‚µ‚­‚ ‚è‚Ü‚¹‚ñ�D
-
-#
-#
-#
-action.setProperty=ƒvƒ�ƒpƒeƒB
-menu.new=�V‹K�ì�¬
-action.newFolder=ƒtƒHƒ‹ƒ_
-action.newFile=ƒtƒ@ƒCƒ‹
-
-##
diff --git a/src/main/resources/vavi/apps/treeView/TreeView.properties b/src/main/resources/vavi/apps/treeView/TreeView.properties
index d5e15c0..79c4481 100644
--- a/src/main/resources/vavi/apps/treeView/TreeView.properties
+++ b/src/main/resources/vavi/apps/treeView/TreeView.properties
@@ -1,23 +1,23 @@
-#
-# Copyright (c) 2001 by Naohide Sano, All rights reserved.
-#
-# Properties File for Oracle Workbench Applications
-#
-# 010821 nsano initial version
-#
-
-#
-# resource
-#
-tv.action.0.iconName=treeView.openIcon
-tv.action.0.icon=resources/open.png
-tv.action.1.iconName=treeView.deleteIcon
-tv.action.1.icon=resources/delete.png
-tv.action.2.iconName=treeView.cutIcon
-tv.action.2.icon=resources/cut.png
-tv.action.3.iconName=treeView.copyIcon
-tv.action.3.icon=resources/copy.png
-tv.action.4.iconName=treeView.pasteIcon
-tv.action.4.icon=resources/paste.png
-
-#
+#
+# Copyright (c) 2001 by Naohide Sano, All rights reserved.
+#
+# Properties File for Oracle Workbench Applications
+#
+# 010821 nsano initial version
+#
+
+#
+# resource
+#
+tv.action.0.iconName=treeView.openIcon
+tv.action.0.icon=open.png
+tv.action.1.iconName=treeView.deleteIcon
+tv.action.1.icon=delete.png
+tv.action.2.iconName=treeView.cutIcon
+tv.action.2.icon=cut.png
+tv.action.3.iconName=treeView.copyIcon
+tv.action.3.icon=copy.png
+tv.action.4.iconName=treeView.pasteIcon
+tv.action.4.icon=paste.png
+
+#
diff --git a/src/main/resources/vavi/apps/treeView/resources/copy.png b/src/main/resources/vavi/apps/treeView/copy.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/resources/copy.png
rename to src/main/resources/vavi/apps/treeView/copy.png
diff --git a/src/main/resources/vavi/apps/treeView/resources/cut.png b/src/main/resources/vavi/apps/treeView/cut.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/resources/cut.png
rename to src/main/resources/vavi/apps/treeView/cut.png
diff --git a/src/main/resources/vavi/apps/treeView/node/resources/default_file.png b/src/main/resources/vavi/apps/treeView/default_file.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/node/resources/default_file.png
rename to src/main/resources/vavi/apps/treeView/default_file.png
diff --git a/src/main/resources/vavi/apps/treeView/resources/delete.png b/src/main/resources/vavi/apps/treeView/delete.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/resources/delete.png
rename to src/main/resources/vavi/apps/treeView/delete.png
diff --git a/src/main/resources/vavi/apps/treeView/resources/exit.png b/src/main/resources/vavi/apps/treeView/exit.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/resources/exit.png
rename to src/main/resources/vavi/apps/treeView/exit.png
diff --git a/src/main/resources/vavi/apps/treeView/resources/mark.png b/src/main/resources/vavi/apps/treeView/mark.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/resources/mark.png
rename to src/main/resources/vavi/apps/treeView/mark.png
diff --git a/src/main/resources/vavi/apps/treeView/node/resources/default_close.png b/src/main/resources/vavi/apps/treeView/node/default_close.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/node/resources/default_close.png
rename to src/main/resources/vavi/apps/treeView/node/default_close.png
diff --git a/src/main/resources/vavi/apps/treeView/resources/default_file.png b/src/main/resources/vavi/apps/treeView/node/default_file.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/resources/default_file.png
rename to src/main/resources/vavi/apps/treeView/node/default_file.png
diff --git a/src/main/resources/vavi/apps/treeView/node/resources/default_open.png b/src/main/resources/vavi/apps/treeView/node/default_open.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/node/resources/default_open.png
rename to src/main/resources/vavi/apps/treeView/node/default_open.png
diff --git a/src/main/resources/vavi/apps/treeView/node/resources/folder.png b/src/main/resources/vavi/apps/treeView/node/folder.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/node/resources/folder.png
rename to src/main/resources/vavi/apps/treeView/node/folder.png
diff --git a/src/main/resources/vavi/apps/treeView/node/resources/new.png b/src/main/resources/vavi/apps/treeView/node/new.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/node/resources/new.png
rename to src/main/resources/vavi/apps/treeView/node/new.png
diff --git a/src/main/resources/vavi/apps/treeView/node/resources/property.png b/src/main/resources/vavi/apps/treeView/node/property.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/node/resources/property.png
rename to src/main/resources/vavi/apps/treeView/node/property.png
diff --git a/src/main/resources/vavi/apps/treeView/resources/open.png b/src/main/resources/vavi/apps/treeView/open.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/resources/open.png
rename to src/main/resources/vavi/apps/treeView/open.png
diff --git a/src/main/resources/vavi/apps/treeView/resources/paste.png b/src/main/resources/vavi/apps/treeView/paste.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/resources/paste.png
rename to src/main/resources/vavi/apps/treeView/paste.png
diff --git a/src/main/resources/vavi/apps/treeView/resources/search.png b/src/main/resources/vavi/apps/treeView/search.png
similarity index 100%
rename from src/main/resources/vavi/apps/treeView/resources/search.png
rename to src/main/resources/vavi/apps/treeView/search.png
diff --git a/src/main/java/vavi/apps/treeView/Dao.java b/src/test/java/sample/Dao.java
similarity index 91%
rename from src/main/java/vavi/apps/treeView/Dao.java
rename to src/test/java/sample/Dao.java
index 7da6c11..469c31d 100644
--- a/src/main/java/vavi/apps/treeView/Dao.java
+++ b/src/test/java/sample/Dao.java
@@ -4,12 +4,14 @@
  * Programmed by Naohide Sano
  */
 
-package vavi.apps.treeView;
+package sample;
 
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 
+import vavi.apps.treeView.TreeViewTreeNode;
+
 
 /**
  * Dao.
diff --git a/src/main/java/vavi/apps/treeView/node/RootFolderTreeNode.java b/src/test/java/sample/RootFolderTreeNode.java
similarity index 94%
rename from src/main/java/vavi/apps/treeView/node/RootFolderTreeNode.java
rename to src/test/java/sample/RootFolderTreeNode.java
index 6426c95..1be822d 100644
--- a/src/main/java/vavi/apps/treeView/node/RootFolderTreeNode.java
+++ b/src/test/java/sample/RootFolderTreeNode.java
@@ -4,7 +4,7 @@
  * Programmed by Naohide Sano
  */
 
-package vavi.apps.treeView.node;
+package sample;
 
 import vavi.apps.treeView.FolderTreeNode;
 
diff --git a/src/test/java/sample/Sample.java b/src/test/java/sample/Sample.java
new file mode 100644
index 0000000..192288f
--- /dev/null
+++ b/src/test/java/sample/Sample.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2022 by Naohide Sano, All rights reserved.
+ *
+ * Programmed by Naohide Sano
+ */
+
+package sample;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import javax.swing.JFrame;
+
+import vavi.apps.treeView.TreeViewFrame;
+import vavi.apps.treeView.TreeViewTreeNode;
+import vavi.swing.binding.treeview.TreeView;
+import vavi.util.Debug;
+
+
+/**
+ * Sample.
+ *
+ * @author <a href="mailto:umjammer@gmail.com">Naohide Sano</a> (nsano)
+ * @version 0.00 2022-12-11 nsano initial version <br>
+ */
+@TreeView
+public class Sample {
+
+    private Dao dao = new XmlDao();
+
+    private TreeViewTreeNode root;
+
+    public TreeViewTreeNode load(InputStream is) throws IOException {
+        root = dao.read(is);
+        return root;
+    }
+
+    public void save(OutputStream os, TreeViewTreeNode root) throws IOException {
+        dao.write(root, os);
+    }
+
+    public InputStream init() {
+        InputStream is = Test.class.getResourceAsStream(System.getProperty("tv.resource.tree"));
+        Debug.println(System.getProperty("tv.resource.tree") + ": " + is);
+        return is;
+    }
+
+    /**
+     * The program entry pont.
+     */
+    public static void main(String[] args) throws Exception {
+
+        vavi.apps.treeView.TreeView tree = new vavi.apps.treeView.TreeView(new Sample());
+
+        JFrame frame = new TreeViewFrame(tree);
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setVisible(true);
+    }
+}
diff --git a/src/test/java/vavi/apps/treeView/node/Test.java b/src/test/java/sample/Test.java
similarity index 85%
rename from src/test/java/vavi/apps/treeView/node/Test.java
rename to src/test/java/sample/Test.java
index e5e53dd..8fe132c 100644
--- a/src/test/java/vavi/apps/treeView/node/Test.java
+++ b/src/test/java/sample/Test.java
@@ -4,9 +4,9 @@
  * Programmed by Naohide Sano
  */
 
-package vavi.apps.treeView.node;
+package sample;
 
-import java.io.*;
+import java.io.Serializable;
 
 
 /**
@@ -15,13 +15,13 @@
  * @author <a href="mailto:vavivavi@yahoo.co.jp">Naohide Sano</a> (nsano)
  * @version 0.00 010908 nsano initial version <br>
  */
-public class Test
-    implements Serializable {
+public class Test implements Serializable {
 
     private String name;
     private int i;
 
-    public Test() {}
+    public Test() {
+    }
 
     public Test(String name, int i) {
         this.name = name;
diff --git a/src/test/java/vavi/apps/treeView/node/TestBeanInfo.java b/src/test/java/sample/TestBeanInfo.java
similarity index 73%
rename from src/test/java/vavi/apps/treeView/node/TestBeanInfo.java
rename to src/test/java/sample/TestBeanInfo.java
index f29719d..42469a0 100644
--- a/src/test/java/vavi/apps/treeView/node/TestBeanInfo.java
+++ b/src/test/java/sample/TestBeanInfo.java
@@ -4,7 +4,7 @@
  * Programmed by Naohide Sano
  */
 
-package vavi.apps.treeView.node;
+package sample;
 
 import java.awt.*;
 import java.beans.*;
@@ -17,8 +17,7 @@
  * @author <a href="mailto:vavivavi@yahoo.co.jp">Naohide Sano</a> (nsano)
  * @version 0.00 020625 nsano initial version <br>
  */
-public class TestBeanInfo extends SimpleBeanInfo
-    implements TreeNodeInfo {
+public class TestBeanInfo extends SimpleBeanInfo implements TreeNodeInfo {
 
     private final Class<?> clazz = Test.class;
 
@@ -31,11 +30,11 @@ public BeanDescriptor getBeanDescriptor() {
     public Image getIcon(int iconKind) {
         switch (iconKind) {
         case ICON_COLOR_16x16_EXT2:
-            return loadImage("resources/default_open.png");
+            return loadImage("/vavi/apps/treeView/node/default_open.png");
         case ICON_COLOR_16x16_EXT1:
-            return loadImage("resources/default_close.png");
+            return loadImage("/vavi/apps/treeView/node/default_close.png");
         default:
-            return loadImage("resources/default_file.png");
+            return loadImage("/vavi/apps/treeView/node/default_file.png");
         }
     }
 
diff --git a/src/test/java/vavi/apps/treeView/node/TestFileTreeNode.java b/src/test/java/sample/TestFileTreeNode.java
similarity index 97%
rename from src/test/java/vavi/apps/treeView/node/TestFileTreeNode.java
rename to src/test/java/sample/TestFileTreeNode.java
index c7106eb..1c228d9 100644
--- a/src/test/java/vavi/apps/treeView/node/TestFileTreeNode.java
+++ b/src/test/java/sample/TestFileTreeNode.java
@@ -4,7 +4,7 @@
  * Programmed by Naohide Sano
  */
 
-package vavi.apps.treeView.node;
+package sample;
 
 import vavi.apps.treeView.FileTreeNode;
 import vavi.apps.treeView.TreeViewException;
diff --git a/src/test/java/vavi/apps/treeView/node/TestFolderTreeNode.java b/src/test/java/sample/TestFolderTreeNode.java
similarity index 98%
rename from src/test/java/vavi/apps/treeView/node/TestFolderTreeNode.java
rename to src/test/java/sample/TestFolderTreeNode.java
index a98ab2a..6ee80de 100644
--- a/src/test/java/vavi/apps/treeView/node/TestFolderTreeNode.java
+++ b/src/test/java/sample/TestFolderTreeNode.java
@@ -4,7 +4,7 @@
  * Programmed by Naohide Sano
  */
 
-package vavi.apps.treeView.node;
+package sample;
 
 import vavi.apps.treeView.FolderTreeNode;
 import vavi.apps.treeView.TreeViewException;
diff --git a/src/main/java/vavi/apps/treeView/XmlDao.java b/src/test/java/sample/XmlDao.java
similarity index 96%
rename from src/main/java/vavi/apps/treeView/XmlDao.java
rename to src/test/java/sample/XmlDao.java
index 6cafb1c..f2f2037 100644
--- a/src/main/java/vavi/apps/treeView/XmlDao.java
+++ b/src/test/java/sample/XmlDao.java
@@ -4,13 +4,12 @@
  * Programmed by Naohide Sano
  */
 
-package vavi.apps.treeView;
+package sample;
 
 import java.beans.XMLDecoder;
 import java.beans.XMLEncoder;
 import java.io.BufferedOutputStream;
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -18,6 +17,8 @@
 import java.io.Writer;
 import java.lang.reflect.Constructor;
 import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
 import java.util.Vector;
 
 import javax.xml.parsers.DocumentBuilder;
@@ -37,6 +38,7 @@
 
 import org.xml.sax.SAXException;
 
+import vavi.apps.treeView.TreeViewTreeNode;
 import vavi.util.Debug;
 
 
@@ -65,7 +67,7 @@ public TreeViewTreeNode read(InputStream is) throws IOException {
         try {
             builder = factory.newDocumentBuilder();
         } catch (ParserConfigurationException e) {
-            throw (RuntimeException) new IllegalStateException().initCause(e);
+            throw new IllegalStateException(e);
         }
 
         factory.setValidating(true);
@@ -139,7 +141,7 @@ private TreeViewTreeNode getChildTreeNode(Node node) {
 Debug.println("child: " + child.getNodeName() + ": " + userObject);
                 } else if ("url".equals(child.getNodeName())) { // 0.1.0
                     urlString = child.getFirstChild().getNodeValue();
-Debug.println("child: " + child.getNodeName() + ": " + urlString);
+Debug.println("child: " + child.getNodeName() + ": " + urlString.trim());
                 } else if ("node".equals(child.getNodeName())) {
                     childTreeNodes.add(getChildTreeNode(child));
                 } else {
@@ -166,7 +168,7 @@ private TreeViewTreeNode getChildTreeNode(Node node) {
     /**
      * 新�� TreeViewTreeNode �インスタンスを返���．
      * 
-     * @version 0.1.0
+     * @since 0.1.0
      */
     private static TreeViewTreeNode newInstance(String className, String urlString) {
         try {
@@ -179,14 +181,14 @@ private static TreeViewTreeNode newInstance(String className, String urlString)
             return newInstance(className, userObject);
         } catch (Exception e) {
 Debug.println(e);
-            throw (RuntimeException) new IllegalStateException().initCause(e);
+            throw new IllegalStateException(e);
         }
     }
 
     /**
      * 新�� TreeViewTreeNode �インスタンスを返���．
      * 
-     * @version 0.0.0
+     * @since 0.0.0
      */
     private static TreeViewTreeNode newInstance(String className, Object userObject) {
         try {
@@ -236,7 +238,7 @@ private static TreeViewTreeNode newInstance(String className, Object userObject)
      */
     public void write(TreeViewTreeNode root, OutputStream os) throws IOException {
 
-        writer = new OutputStreamWriter(os, "UTF-8");
+        writer = new OutputStreamWriter(os, StandardCharsets.UTF_8);
 
         DocumentBuilderFactory dFactory = DocumentBuilderFactory.newInstance();
         DocumentBuilder builder;
@@ -278,7 +280,7 @@ public void write(TreeViewTreeNode root, OutputStream os) throws IOException {
     private Element createElement(TreeViewTreeNode node) throws IOException {
 
         File file = new File(node.toString() + ".xml");
-        OutputStream os = new BufferedOutputStream(new FileOutputStream(file));
+        OutputStream os = new BufferedOutputStream(Files.newOutputStream(file.toPath()));
         XMLEncoder xe = new XMLEncoder(os);
         xe.writeObject(node.getUserObject());
         xe.close();
diff --git a/src/test/resources/logging.properties b/src/test/resources/logging.properties
new file mode 100644
index 0000000..b82ecda
--- /dev/null
+++ b/src/test/resources/logging.properties
@@ -0,0 +1,6 @@
+handlers=java.util.logging.ConsoleHandler
+.level=INFO
+java.util.logging.ConsoleHandler.level=ALL
+java.util.logging.ConsoleHandler.formatter=vavi.util.logging.VaviFormatter
+
+vavi.util.level=FINE
diff --git a/src/test/resources/vavi/apps/treeView/Test File C.xml b/src/test/resources/sample/Test File C.xml
similarity index 83%
rename from src/test/resources/vavi/apps/treeView/Test File C.xml
rename to src/test/resources/sample/Test File C.xml
index 98750a0..c82d5fa 100644
--- a/src/test/resources/vavi/apps/treeView/Test File C.xml	
+++ b/src/test/resources/sample/Test File C.xml	
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?> 
 <java version="1.4.0-beta2" class="java.beans.XMLDecoder"> 
- <object class="vavi.apps.treeView.node.Test"> 
+ <object class="sample.Test">
   <void property="i"> 
    <int>1</int> 
   </void> 
diff --git a/src/test/resources/vavi/apps/treeView/Test File D.xml b/src/test/resources/sample/Test File D.xml
similarity index 83%
rename from src/test/resources/vavi/apps/treeView/Test File D.xml
rename to src/test/resources/sample/Test File D.xml
index 1cf64d1..ba1ccc3 100644
--- a/src/test/resources/vavi/apps/treeView/Test File D.xml	
+++ b/src/test/resources/sample/Test File D.xml	
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?> 
 <java version="1.4.0-beta2" class="java.beans.XMLDecoder"> 
- <object class="vavi.apps.treeView.node.Test"> 
+ <object class="sample.Test">
   <void property="i"> 
    <int>1</int> 
   </void> 
diff --git a/src/test/resources/vavi/apps/treeView/Test File E.xml b/src/test/resources/sample/Test File E.xml
similarity index 83%
rename from src/test/resources/vavi/apps/treeView/Test File E.xml
rename to src/test/resources/sample/Test File E.xml
index 1796ddc..f044a7a 100644
--- a/src/test/resources/vavi/apps/treeView/Test File E.xml	
+++ b/src/test/resources/sample/Test File E.xml	
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?> 
 <java version="1.4.0-beta2" class="java.beans.XMLDecoder"> 
- <object class="vavi.apps.treeView.node.Test"> 
+ <object class="sample.Test">
   <void property="i"> 
    <int>1</int> 
   </void> 
diff --git a/src/test/resources/vavi/apps/treeView/Test Foler A.xml b/src/test/resources/sample/Test Foler A.xml
similarity index 83%
rename from src/test/resources/vavi/apps/treeView/Test Foler A.xml
rename to src/test/resources/sample/Test Foler A.xml
index 1a1ba02..ca8e752 100644
--- a/src/test/resources/vavi/apps/treeView/Test Foler A.xml	
+++ b/src/test/resources/sample/Test Foler A.xml	
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?> 
 <java version="1.4.0-beta2" class="java.beans.XMLDecoder"> 
- <object class="vavi.apps.treeView.node.Test"> 
+ <object class="sample.Test">
   <void property="i"> 
    <int>100</int> 
   </void> 
diff --git a/src/test/resources/vavi/apps/treeView/Test Foler B.xml b/src/test/resources/sample/Test Foler B.xml
similarity index 83%
rename from src/test/resources/vavi/apps/treeView/Test Foler B.xml
rename to src/test/resources/sample/Test Foler B.xml
index 41fd16d..83c9419 100644
--- a/src/test/resources/vavi/apps/treeView/Test Foler B.xml	
+++ b/src/test/resources/sample/Test Foler B.xml	
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?> 
 <java version="1.4.0-beta2" class="java.beans.XMLDecoder"> 
- <object class="vavi.apps.treeView.node.Test"> 
+ <object class="sample.Test">
   <void property="i"> 
    <int>100</int> 
   </void> 
diff --git a/src/test/resources/root.xml b/src/test/resources/sample/root.xml
similarity index 100%
rename from src/test/resources/root.xml
rename to src/test/resources/sample/root.xml
diff --git a/src/test/resources/sample/tree.xml b/src/test/resources/sample/tree.xml
new file mode 100644
index 0000000..d733fd1
--- /dev/null
+++ b/src/test/resources/sample/tree.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<treeview version="0.1.0">
+  <node>
+    <class>sample.RootFolderTreeNode</class>
+    <url>file:src/test/resources/sample/root.xml</url>
+    <node>
+      <class>sample.TestFolderTreeNode</class>
+      <url>file:src/test/resources/sample/Test Foler A.xml
+      </url>
+    </node>
+    <node>
+      <class>sample.TestFolderTreeNode</class>
+      <url>file:src/test/resources/sample/Test Foler B.xml
+      </url>
+      <node>
+        <class>sample.TestFileTreeNode</class>
+        <url>file:src/test/resources/sample/Test File D.xml
+        </url>
+      </node>
+      <node>
+        <class>sample.TestFileTreeNode</class>
+        <url>file:src/test/resources/sample/Test File E.xml
+        </url>
+      </node>
+    </node>
+    <node>
+      <class>sample.TestFileTreeNode</class>
+      <url>file:src/test/resources/sample/Test File C.xml
+      </url>
+    </node>
+  </node>
+</treeview>
\ No newline at end of file
diff --git a/src/test/resources/tree.xml b/src/test/resources/tree.xml
deleted file mode 100644
index 283ad4f..0000000
--- a/src/test/resources/tree.xml
+++ /dev/null
@@ -1,32 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<treeview version="0.1.0">
-  <node>
-    <class>vavi.apps.treeView.node.RootFolderTreeNode</class>
-    <url>file:src/test/resources/root.xml</url>
-    <node>
-      <class>vavi.apps.treeView.node.TestFolderTreeNode</class>
-      <url>file:src/test/resources/vavi/apps/treeView/Test Foler A.xml
-      </url>
-    </node>
-    <node>
-      <class>vavi.apps.treeView.node.TestFolderTreeNode</class>
-      <url>file:src/test/resources/vavi/apps/treeView/Test Foler B.xml
-      </url>
-      <node>
-        <class>vavi.apps.treeView.node.TestFileTreeNode</class>
-        <url>file:src/test/resources/vavi/apps/treeView/Test File D.xml
-        </url>
-      </node>
-      <node>
-        <class>vavi.apps.treeView.node.TestFileTreeNode</class>
-        <url>file:src/test/resources/vavi/apps/treeView/Test File E.xml
-        </url>
-      </node>
-    </node>
-    <node>
-      <class>vavi.apps.treeView.node.TestFileTreeNode</class>
-      <url>file:src/test/resources/vavi/apps/treeView/Test File C.xml
-      </url>
-    </node>
-  </node>
-</treeview>
\ No newline at end of file