Pad a binary String equal to zero (“0”) with leading zeros in Java

Question

Integer.toBinaryString(data)

gives me a binary String representation of my array data.

However I would like a simple way to add leading ze

Answer 1

You could override that function in your own class:

    public static String toBinaryString(int x){

        byte[] b = new byte[32]; // 32 bits per int
        int pos = 0;        
        do{
            x = x >> 1; // /2
            b[31-pos++] = (byte)(x % 2);
        }while(x > 0);

        return Arrays.toString(b);  
    }