💾 λjcommon v1.4.1

README.md

@@ -2,6 +2,7 @@
 
 [![Java](https://img.shields.io/badge/language-Java%2010-9B599A.svg?style=flat-square)](http://java.com)
 [![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg?style=flat-square)](https://raw.githubusercontent.com/AperLambda/lambdajcommon/master/LICENSE)
+![Version](https://img.shields.io/github/release/AperLambda/lambdajcommon.svg?style=flat-square)
 [![GitHub issues](https://img.shields.io/github/issues/AperLambda/lambdajcommon.svg?style=flat-square)](https://github.com/AperLambda/lambdajcommon/issues)
 
 [λcommon](https://github.com/AperLambda/lambdacommon.git):
@@ -34,5 +35,5 @@ maven { url "https://aperlambda.github.io/maven" }
 
 And in your dependencies add:
 ```groovy
-compile 'org.aperlambda:lambdajcommon:1.4.0'
+compile 'org.aperlambda:lambdajcommon:1.4.1'
 ```

build.gradle

@@ -7,7 +7,7 @@ apply plugin: 'maven'
 apply plugin: 'maven-publish'
 
 group = 'org.aperlambda'
-version = '1.4.0'
+version = '1.4.1'
 description = 'A library written in Java 8 with common features.'
 
 sourceCompatibility = 10

src/main/java/org/aperlambda/lambdacommon/utils/LambdaReflection.java

@@ -31,6 +31,22 @@ private LambdaReflection()
         Fields
      */
 
+	private static void setupField(Field field)
+	{
+		field.setAccessible(true);
+		try
+		{
+			var modifiersField = Field.class.getDeclaredField("modifiers");
+			modifiersField.setAccessible(true);
+			int modifiers = modifiersField.getInt(field);
+			modifiers &= ~Modifier.FINAL;
+			modifiersField.setInt(field, modifiers);
+		}
+		catch (IllegalAccessException | NoSuchFieldException ignored)
+		{
+		}
+	}
+
 	/**
 	 * Gets the field by it's name from a specified class.
 	 *
@@ -43,21 +59,57 @@ private LambdaReflection()
 	{
 		try
 		{
-			Field field = declared ? clazz.getDeclaredField(fieldName) : clazz.getField(fieldName);
-			field.setAccessible(true);
-			Field modifiersField = Field.class.getDeclaredField("modifiers");
-			modifiersField.setAccessible(true);
-			int modifiers = modifiersField.getInt(field);
-			modifiers &= ~Modifier.FINAL;
-			modifiersField.setInt(field, modifiers);
+			var field = declared ? clazz.getDeclaredField(fieldName) : clazz.getField(fieldName);
+			setupField(field);
 			return Optional.of(field);
 		}
-		catch (NoSuchFieldException | IllegalAccessException e)
+		catch (NoSuchFieldException e)
 		{
 			return Optional.empty();
 		}
 	}
 
+	/**
+	 * Gets the first field with the specified type in a class.
+	 *
+	 * @param clazz The class of the field.
+	 * @param type  The type of the field.
+	 * @return The optional field.
+	 */
+	public static @NotNull Optional<Field> getFirstFieldOfType(@NotNull Class<?> clazz, @NotNull Class<?> type)
+	{
+		for (var field : clazz.getDeclaredFields())
+		{
+			if (field.getType().equals(type))
+			{
+				setupField(field);
+				return Optional.of(field);
+			}
+		}
+		return Optional.empty();
+	}
+
+	/**
+	 * Gets the last field with the specified type in a class.
+	 *
+	 * @param clazz The class of the field.
+	 * @param type  The type of the field.
+	 * @return The optional field.
+	 */
+	public static @NotNull Optional<Field> getLastFieldOfType(@NotNull Class<?> clazz, @NotNull Class<?> type)
+	{
+		Field field = null;
+		for (var currentField : clazz.getDeclaredFields())
+		{
+			if (currentField.getType().equals(type))
+				field = currentField;
+		}
+		if (field != null)
+			setupField(field);
+		return Optional.ofNullable(field);
+	}
+
+
 	/**
 	 * Sets the value of the specified field in the instance of the specified object.
 	 *
@@ -150,7 +202,6 @@ public static void setValue(@Nullable Object object, @NotNull Field field, @Null
 		}
 		catch (NoSuchMethodException e)
 		{
-			e.printStackTrace();
 			return Optional.empty();
 		}
 	}
@@ -171,7 +222,6 @@ public static void setValue(@Nullable Object object, @NotNull Field field, @Null
 		}
 		catch (IllegalAccessException | InvocationTargetException e)
 		{
-			e.printStackTrace();
 			return null;
 		}
 	}
@@ -223,9 +273,8 @@ public static void setValue(@Nullable Object object, @NotNull Field field, @Null
 		}
 		catch (InstantiationException | IllegalAccessException | InvocationTargetException e)
 		{
-			e.printStackTrace();
+			return null;
 		}
-		return null;
 	}
 
 	/*
@@ -239,7 +288,6 @@ public static void setValue(@Nullable Object object, @NotNull Field field, @Null
 		}
 		catch (ClassNotFoundException e)
 		{
-			e.printStackTrace();
 			return Optional.empty();
 		}
 	}