} while( si < length );

        ps.println( c );
    }

/** 
 * This is an alternative to the <code>java.lang.Integer.toHexString</cod>
 * method. It is an efficient relative that also will pad the left side so
 * that the result is <code>size</code> digits.
 */ 
    public static String toHexString( int val, int size ) {
        char[] c = new char[size];
        toHexChars( val, c, 0, size );

    };


    /**
     * This is an alternative to the <code>java.lang.Integer.toHexString</code>
     * method. It is an efficient relative that also will pad the left side so
     * that the result is <code>size</code> digits.
     * 
     * @param val
     * @param size
     * @return hex string
     */
    public static String toHexString ( int val, int size ) {