Converting hexadecimal strings : Base64 « Development Class « Java

Converting hexadecimal strings

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/* $Id$ */

 * Provides helper functions for converting hexadecimal strings.
public class HexUtil {

    private static final char[] DIGITS = 
        {'0', '1', '2', '3', '4', '5', '6', '7',
         '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};

     * Converts a byte array to a hexadecimal String
     * @param data the data to encode
     * @return String the resulting String
    public static final String toHex(byte[] data) {
        final StringBuffer sb = new StringBuffer(data.length * 2);
        for (int i = 0; i < data.length; i++) {
            sb.append(DIGITS[(data[i] >>> 4) & 0x0F]);
            sb.append(DIGITS[data[i] & 0x0F]);
        return sb.toString();


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