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Binary input to Hexadecimal conversion

kalyangkm asked
Last Modified: 2015-02-26
I have this piece of code which is a code snippet from another code.  Could anyone explain how the bytes and hex characters are correlated and what exactly is being done with the string buffers on bytes and hex characters?

 private static final char[] HexChars = {  
    '0', '1', '2', '3', '4', '5', '6', '7',  
    '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'  
    public static final String toHexString(byte[] bytes)   
        StringBuffer sb = new StringBuffer();  
        int i;  
        for (i=0; i < bytes.length; i++)       
            sb.append( HexChars[( bytes[i] & 0xf0 ) >>> 4] );  
            sb.append( HexChars[bytes[i] & 0x0f] );  
            //sb.append(HexChars[(bytes[i] >> 4) & 0xf]);  
            //sb.append(HexChars[bytes[i] & 0xf]);  
        return sb.toString();  

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