diff --git a/src/org/atriasoft/etk/util/ArraysTools.java b/src/org/atriasoft/etk/util/ArraysTools.java
index 3910b7b..2281006 100644
--- a/src/org/atriasoft/etk/util/ArraysTools.java
+++ b/src/org/atriasoft/etk/util/ArraysTools.java
@@ -1,5 +1,6 @@
 package org.atriasoft.etk.util;
 
+import java.util.Arrays;
 import java.util.List;
 
 public class ArraysTools {
@@ -7,9 +8,7 @@ public class ArraysTools {
 		if (buffer == null) {
 			return;
 		}
-		for (int iii = 0; iii < buffer.length; iii++) {
-			buffer[iii] = value;
-		}
+		Arrays.fill(buffer, value);
 	}
 	
 	public static <T> void fill2(final float[][] buffer, final float value) {
@@ -35,7 +34,7 @@ public class ArraysTools {
 	}
 	
 
-	public static byte[] listByteToPrimitive(List<Object> input) {
+	public static byte[] listByteToPrimitive(final List<Object> input) {
 		byte[] out = new byte[input.size()];
 		for(int iii=0; iii<input.size(); iii++) {
 			out[iii] = (Byte)input.get(iii);
@@ -43,14 +42,14 @@ public class ArraysTools {
 		return out;
 	}
 
-	public static byte[] toPrimitive(Byte[] input) {
+	public static byte[] toPrimitive(final Byte[] input) {
 		byte[] out = new byte[input.length];
 		for(int iii=0; iii<input.length; iii++) {
 			out[iii] = input[iii];
 		}
 		return out;
 	}
-	public static short[] listShortToPrimitive(List<Object> input) {
+	public static short[] listShortToPrimitive(final List<Object> input) {
 		short[] out = new short[input.size()];
 		for(int iii=0; iii<input.size(); iii++) {
 			out[iii] = (Short)input.get(iii);
@@ -58,14 +57,14 @@ public class ArraysTools {
 		return out;
 	}
 
-	public short[] toPrimitive(Short[] input) {
+	public short[] toPrimitive(final Short[] input) {
 		short[] out = new short[input.length];
 		for(int iii=0; iii<input.length; iii++) {
 			out[iii] = input[iii];
 		}
 		return out;
 	}
-	public static int[] listIntegerToPrimitive(List<Object> tmpp) {
+	public static int[] listIntegerToPrimitive(final List<Object> tmpp) {
 		int[] out = new int[tmpp.size()];
 		for(int iii=0; iii<tmpp.size(); iii++) {
 			out[iii] = (Integer)tmpp.get(iii);
@@ -73,14 +72,14 @@ public class ArraysTools {
 		return out;
 	}
 
-	public static int[] toPrimitive(Integer[] input) {
+	public static int[] toPrimitive(final Integer[] input) {
 		int[] out = new int[input.length];
 		for(int iii=0; iii<input.length; iii++) {
 			out[iii] = input[iii];
 		}
 		return out;
 	}
-	public static long[] listLongToPrimitive(List<Object> input) {
+	public static long[] listLongToPrimitive(final List<Object> input) {
 		long[] out = new long[input.size()];
 		for(int iii=0; iii<input.size(); iii++) {
 			out[iii] = (Long)input.get(iii);
@@ -88,28 +87,28 @@ public class ArraysTools {
 		return out;
 	}
 
-	public static long[] toPrimitive(Long[] input) {
+	public static long[] toPrimitive(final Long[] input) {
 		long[] out = new long[input.length];
 		for(int iii=0; iii<input.length; iii++) {
 			out[iii] = input[iii];
 		}
 		return out;
 	}
-	public static boolean[] listBooleanToPrimitive(List<Object> input) {
+	public static boolean[] listBooleanToPrimitive(final List<Object> input) {
 		boolean[] out = new boolean[input.size()];
 		for(int iii=0; iii<input.size(); iii++) {
 			out[iii] = (Boolean)input.get(iii);
 		}
 		return out;
 	}
-	public static double[] listDoubleToPrimitive(List<Object> input) {
+	public static double[] listDoubleToPrimitive(final List<Object> input) {
 		double[] out = new double[input.size()];
 		for(int iii=0; iii<input.size(); iii++) {
 			out[iii] = (Double)input.get(iii);
 		}
 		return out;
 	}
-	public static float[] listFloatToPrimitive(List<Object> input) {
+	public static float[] listFloatToPrimitive(final List<Object> input) {
 		float[] out = new float[input.size()];
 		for(int iii=0; iii<input.size(); iii++) {
 			out[iii] = (Float)input.get(iii);
@@ -117,13 +116,38 @@ public class ArraysTools {
 		return out;
 	}
 
-	public static boolean[] toPrimitive(boolean[] input) {
+	public static boolean[] toPrimitive(final boolean[] input) {
 		boolean[] out = new boolean[input.length];
 		for(int iii=0; iii<input.length; iii++) {
-			out[iii] = (boolean)input[iii];
+			out[iii] = input[iii];
 		}
 		return out;
 	}
-	
+
 	private ArraysTools() {}
+
+	public static Object listToPrimitiveAuto(final Class<?>type, final List<Object> value) {
+		if (type == byte.class) {
+			return ArraysTools.listByteToPrimitive(value);
+		}
+		if (type == short.class) {
+			return ArraysTools.listShortToPrimitive(value);
+		}
+		if (type == int.class) {
+			return ArraysTools.listIntegerToPrimitive(value);
+		}
+		if (type == long.class) {
+			return ArraysTools.listLongToPrimitive(value);
+		}
+		if (type == boolean.class) {
+			return ArraysTools.listBooleanToPrimitive(value);
+		}
+		if (type == float.class) {
+			return ArraysTools.listFloatToPrimitive(value);
+		}
+		if (type == double.class) {
+			return ArraysTools.listDoubleToPrimitive(value);
+		}
+		return null;
+	}
 }