How to Convert byte array to hexString in java? [duplicate]

Question

I have byte array that consist of hex values like CA ,FA,21,33

But I want to list them in JList as a single element CAFA2133. In order to list them in JList I think I need to convert it to string. So any recommendation?

Answer 1

public static String bytesToHex(byte[] in) {     final StringBuilder builder = new StringBuilder();     for(byte b : in) {         builder.append(String.format("%02x", b));     }     return builder.toString(); } 

Answer 2

You need to look at String.format() and the Formatter specifications.

e.g.

String.format("%02x", byteValue);

Iterate through the array and append each String.format() result to a StringBuilder