Question

How to display the bits of an integer in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        int n = 13;
        
        System.out.println(Integer.toBinaryString(n));
        
        System.out.println(Integer.toBinaryString(255));
    }
}




/*
run:
 
1101
11111111
 
*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        int num = 13;

        System.out.println(String.format("%16s", Integer.toBinaryString(num)).replaceAll(" ", "0"));
    }
}





/*
run:

0000000000001101

*/

 

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