Byte[] and 16 binary strings in Java

Convert byte[] to 16 binary string

public static String Byte2hex (byte[] b) {

    StringBuilder hs = new StringBuilder ();
    String stmp;
    for (int n = 0; b! = null && n < b.length; n++) {
        Stmp = Integer.tohexstring (B[n] & 0XFF);
        if (stmp.length () = = 1)
            Hs.append (' 0 ');
        Hs.append (STMP);
    }
    Return hs.tostring (). toUpperCase ();
}

Convert 16 binary string to byte[]
public static byte[] Tobytes (String str) {
    if (str = = NULL | | Str.trim (). Equals ("")) {
        return new byte[0];
    }

    byte[] bytes = new Byte[str.length ()/2];
    for (int i = 0; i < str.length ()/2; i++) {
        String subStr = str.substring (i * 2, I * 2 + 2);
        Bytes[i] = (byte) integer.parseint (SUBSTR, 16);
    }

    return bytes;
}

Ref: 69939307

Byte[] and 16 binary strings in Java