Hex.java

package org.osgi.service.indexer.impl.util;

public class Hex {
	
	private final static char[] HEX = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};

	public final static String toHexString(byte data[]) {
		StringBuilder sb = new StringBuilder();
		append(sb,data);
		return sb.toString();
	}
	
	public final static void append( StringBuilder sb, byte [] data ) {
		for ( int i =0; i<data.length; i++) {
			sb.append( nibble( data[i] >> 4));
			sb.append( nibble( data[i]));
		}
	}

	private final static char nibble(int i) {	
		return HEX[i & 0xF];
	}
}