Downgrade to language level 8 (#13)

build.gradle

@@ -27,8 +27,8 @@ apply plugin: 'org.jetbrains.intellij'
 apply plugin: 'maven-publish'
 apply plugin: 'java'
 
-sourceCompatibility = 1.11
-targetCompatibility = 1.11
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
 
 repositories {
     mavenLocal()

gradle.properties

@@ -19,5 +19,5 @@
 # If not, see <http://www.gnu.org/licenses/>.
 #
 
-version=1.1.1
+version=1.2.0
 ijVersion=2019.3

src/main/java/icons/InitIcons.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2020 SpotBugs plugin contributors
+ *
+ * This file is part of IntelliJ SpotBugs plugin.
+ *
+ * IntelliJ SpotBugs plugin is free software: you can redistribute it
+ * and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * IntelliJ SpotBugs plugin is distributed in the hope that it will
+ * be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with IntelliJ SpotBugs plugin.
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package icons;
+
+import javax.swing.*;
+import java.util.*;
+
+import static icons.PluginIcons.*;
+
+class InitIcons {
+  static Map<String, Icon> initGroupByRankIconsMap() {
+      Map<String, Icon> iconMap = new HashMap<>();
+      iconMap.put("SCARIEST", GROUP_BY_RANK_SCARIEST_ICON);
+      iconMap.put("SCARY", GROUP_BY_RANK_SCARY_ICON);
+      iconMap.put("TROUBLING", GROUP_BY_RANK_TROUBLING_ICON);
+      iconMap.put("OF_CONCERN", GROUP_BY_RANK_OF_CONCERN_ICON);
+      iconMap.put("OF CONCERN", GROUP_BY_RANK_OF_CONCERN_ICON);
+      return Collections.unmodifiableMap(iconMap);
+  }
+
+  static Map<String, Icon> initGroupByPriorityIconsMap() {
+      Map<String, Icon> iconMap = new HashMap<>();
+      iconMap.put("Low", GROUP_BY_PRIORITY_LOW_ICON);
+      iconMap.put("Medium", GROUP_BY_PRIORITY_MEDIUM_ICON);
+      iconMap.put("High", GROUP_BY_PRIORITY_HIGH_ICON);
+      iconMap.put("Exp", GROUP_BY_PRIORITY_EXP_ICON);
+      iconMap.put("Ignore", GROUP_BY_PRIORITY_IGNORE_ICON);
+      return Collections.unmodifiableMap(iconMap);
+  }
+}

src/main/java/icons/PluginIcons.java

@@ -26,7 +26,7 @@
 import org.jetbrains.plugins.spotbugs.resources.ResourcesLoader;
 
 import javax.swing.*;
-import java.util.Map;
+import java.util.*;
 
 public interface PluginIcons {
 
@@ -91,35 +91,23 @@ public interface PluginIcons {
             ResourcesLoader.loadIcon("actions/groupByTemplate.svg")
     );
 
-    Map<String, Icon> GROUP_BY_RANK_ICONS = Map.of(
-            "SCARIEST", GROUP_BY_RANK_SCARIEST_ICON,
-            "SCARY", GROUP_BY_RANK_SCARY_ICON,
-            "TROUBLING", GROUP_BY_RANK_TROUBLING_ICON,
-            "OF_CONCERN", GROUP_BY_RANK_OF_CONCERN_ICON,
-            "OF CONCERN", GROUP_BY_RANK_OF_CONCERN_ICON
-    );
+    Map<String, Icon> GROUP_BY_RANK_ICONS = InitIcons.initGroupByRankIconsMap();
 
     Icon GROUP_BY_PRIORITY_HIGH_ICON = ResourcesLoader.loadIcon("priority/priorityHigh.png");
     Icon GROUP_BY_PRIORITY_MEDIUM_ICON = ResourcesLoader.loadIcon("priority/priorityMedium.png");
     Icon GROUP_BY_PRIORITY_LOW_ICON = ResourcesLoader.loadIcon("priority/priorityLow.png");
     Icon GROUP_BY_PRIORITY_EXP_ICON = ResourcesLoader.loadIcon("priority/priorityExp.png");
     Icon GROUP_BY_PRIORITY_IGNORE_ICON = ResourcesLoader.loadIcon("priority/priorityIgnore.png");
 
-    Map<String, Icon> GROUP_BY_PRIORITY_ICONS = Map.of(
-            "Low", GROUP_BY_PRIORITY_LOW_ICON,
-            "Medium", GROUP_BY_PRIORITY_MEDIUM_ICON,
-            "High", GROUP_BY_PRIORITY_HIGH_ICON,
-            "Exp", GROUP_BY_PRIORITY_EXP_ICON,
-            "Ignore", GROUP_BY_PRIORITY_IGNORE_ICON
-    );
+    Map<String, Icon> GROUP_BY_PRIORITY_ICONS = InitIcons.initGroupByPriorityIconsMap();
 
     /**
      * --------------------------------------------------------------------------------------------------
      * Priority icons
      */
     Icon HIGH_PRIORITY_ICON = ResourcesLoader.loadIcon("priority/bugHigh.svg");
     Icon NORMAL_PRIORITY_ICON = ResourcesLoader.loadIcon("priority/bugNormal.svg");
-	Icon LOW_PRIORITY_ICON = ResourcesLoader.loadIcon("priority/bugLow.svg");
+	  Icon LOW_PRIORITY_ICON = ResourcesLoader.loadIcon("priority/bugLow.svg");
     Icon EXP_PRIORITY_ICON = ResourcesLoader.loadIcon("priority/bugExp.svg");
 
     /**

src/main/java/org/jetbrains/plugins/spotbugs/core/ErrorReportSubmitterImpl.java

@@ -35,8 +35,8 @@
 
 import java.awt.*;
 import java.awt.datatransfer.StringSelection;
+import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
-import java.nio.charset.StandardCharsets;
 import java.util.List;
 import java.util.*;
 import java.util.concurrent.atomic.AtomicReference;
@@ -163,7 +163,11 @@ private SubmittedReportInfo openBrowser(
 
 	@NotNull
 	private static String encode(@NotNull final String value) {
-		return URLEncoder.encode(value, StandardCharsets.UTF_8);
+		try {
+			return URLEncoder.encode(value, "UTF-8");
+		} catch (UnsupportedEncodingException e) {
+			throw new InternalError("UTF-8 is not available");
+		}
 	}
 
 	@NotNull

src/main/resources/META-INF/plugin.xml

@@ -81,6 +81,11 @@
     </description>
     <change-notes>
         <![CDATA[<html>
+        <h3>1.2.0</h3>
+        <ul>
+            <li>Fixes issue #13: SpotBugs plugin cannot start on Java 8 boot JDK</li>
+            <li>Cosmetic changes</li>
+        </ul>
         <h3>1.1.1</h3>
         <ul>
             <li>Updated SpotBugs to version 4.0.3 to avoid installing SecurityManager during analysis.