diff --git a/src/org/atriasoft/etk/util/ArraysTools.java b/src/org/atriasoft/etk/util/ArraysTools.java
index 8f478a7..5055d64 100644
--- a/src/org/atriasoft/etk/util/ArraysTools.java
+++ b/src/org/atriasoft/etk/util/ArraysTools.java
@@ -1,5 +1,7 @@
 package org.atriasoft.etk.util;
 
+import java.util.List;
+
 public class ArraysTools {
 	public static <T> void fill(final T[] buffer, final T value) {
 		if (buffer == null) {
@@ -32,5 +34,82 @@ public class ArraysTools {
 		}
 	}
 	
+
+	public static byte[] listByteToPrimitive(List<Object> input) {
+		byte[] out = new byte[input.size()];
+		for(int iii=0; iii<input.size(); iii++) {
+			out[iii] = (Byte)input.get(iii);
+		}
+		return out;
+	}
+
+	public static byte[] toPrimitive(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) {
+		short[] out = new short[input.size()];
+		for(int iii=0; iii<input.size(); iii++) {
+			out[iii] = (Short)input.get(iii);
+		}
+		return out;
+	}
+
+	public short[] toPrimitive(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) {
+		int[] out = new int[tmpp.size()];
+		for(int iii=0; iii<tmpp.size(); iii++) {
+			out[iii] = (Integer)tmpp.get(iii);
+		}
+		return out;
+	}
+
+	public static int[] toPrimitive(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) {
+		long[] out = new long[input.size()];
+		for(int iii=0; iii<input.size(); iii++) {
+			out[iii] = (Long)input.get(iii);
+		}
+		return out;
+	}
+
+	public static long[] toPrimitive(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) {
+		boolean[] out = new boolean[input.size()];
+		for(int iii=0; iii<input.size(); iii++) {
+			out[iii] = (Boolean)input.get(iii);
+		}
+		return out;
+	}
+
+	public static boolean[] toPrimitive(boolean[] input) {
+		boolean[] out = new boolean[input.length];
+		for(int iii=0; iii<input.length; iii++) {
+			out[iii] = (boolean)input[iii];
+		}
+		return out;
+	}
+	
 	private ArraysTools() {}
 }