new Helper Class: ByteArrayHexlifier

src/org/hwo/ByteArrayHexlifier.java

@@ -0,0 +1,53 @@
+package org.hwo;
+
+public class ByteArrayHexlifier {
+	
+	protected static char[] hexDigits = "0123456789ABCDEF".toCharArray();
+
+	public static String byteArrayToString(byte[] bytes)
+	{
+		char[] target = new char[bytes.length * 2];
+		
+		for (int i=0;i<bytes.length;i++)
+		{
+			target[2*i] = hexDigits[bytes[i] & 0x0f];
+			target[(2*i)+1] = hexDigits[(bytes[i]>>4) & 0x0f];			
+		}
+		
+		return new String(target);
+	}
+	
+	public static byte[] stringToByteArray(String hexstring)
+	{
+		byte[] buffer;
+		int len = hexstring.length();
+		
+		if ((len % 2)!=0)
+			len--;
+		
+		buffer = new byte[ len / 2]; 
+
+		char[] source = hexstring.toCharArray();
+		
+		for (int i=0;i< buffer.length;i++)
+		{
+			if ((source[2*i] >= 'A')&&(source[2*i] <= 'F'))
+			{
+				buffer[i] = (byte)(source[2*i] - 'A' + 10); 
+			} else if ((source[2*i] >= '0')&&(source[2*i] <= '9'))
+			{
+				buffer[i] = (byte)(source[2*i] - '0');
+			}
+
+			if ((source[(2*i)+1] >= 'A')&&(source[(2*i)+1] <= 'F'))
+			{
+				buffer[i] |= (byte)((source[(2*i)+1] - 'A' + 10)<<4); 
+			} else if ((source[(2*i)+1] >= '0')&&(source[(2*i)+1] <= '9'))
+			{
+				buffer[i] |= (byte)((source[(2*i)+1] - '0')<<4);
+			}
+		}	
+		return buffer;
+	}
+	
+}