How do I convert decimal to binary in Java?

public class IntegerToBinaryExample 
{
    public static void main(String[] args)
    {
        int integer = 127;
        String binary = Integer.toBinaryString(integer);
        System.out.println("Binary value of " + integer + " is " 
                + binary + ".");
        
        int original = Integer.parseInt(binary, 2);
        System.out.println("Integer value of binary '" + binary 
                + "' is " + original + ".");
    }
    
}

Below is output...

Binary value of 127 is 1111111.
Integer value of binary '1111111' is 127.