Question

How to print byte array as hex values in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        byte[] bytes = {74, 97, 118, 97};  
        
        for (byte ch : bytes) {
            System.out.print(Integer.toHexString(ch) + " ");
        }
    }
}
 
 
 
 
/*
run:

4a 61 76 61 

*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        byte[] bytes = {74, 97, 118, 97};  
        
        for (byte ch : bytes) {
            System.out.print(String.format("%02X ", ch));
        }
    }
}
 
 
 
 
/*
run:

4A 61 76 61 

*/

 

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