How to convert the data inside byte[] into a 16 binary string in Java

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The following 3 methods can convert byte[] to 16 binary strings, optionally one

/* *
* Convert byte[] to hex string. Here we can convert byte to int, then use integer.tohexstring (int)
* To convert into 16 binary strings. 
* @param src byte[] Data
* @return Hex string
 */

Public static String bytestohexstring (byte[] src) {
StringBuilder StringBuilder = new StringBuilder (""); 
if (src = = NULL | | src.length <= 0) {
return null; 
    }  
for (int i = 0; i < src.length; i++) {
int v = src[i] & 0xFF; 
String HV = integer.tohexstring (v); 
if (Hv.length () < 2) {
stringbuilder.append (0); 
        }  
stringbuilder.append (HV); 
    }  
return stringbuilder.tostring (); 
} 

Public static String bytes2hexstring (byte[] b) {
String ret = "";
for (int i = 0; i < b.length; i++) {
String hex = integer.tohexstring (B[i] & 0xFF);
if (hex.length () = = 1) {
hex = "0" + hex;
}
ret + = hex;
}
return ret;
}


Public static String Tohex (byte[] buffer) {
stringbuffer sb = new StringBuffer (Buffer.length * 2);
for (int i = 0; i < buffer.length; i++) {
sb.append (Character.fordigit (Buffer[i &) >> 4, +));
sb.append (Character.fordigit (Buffer[i] &));
}
return sb.tostring ();
}

How to convert the data inside byte[] into a 16 binary string in Java