java binary addition

/**
 * @author lautturi.com
 * Java example: how to add two binary numbers in java
 */
import java.util.*;

public class Lautturi {

	public static void main(String[] args) {
		
		String input0 = "1010";
	    String input1 =   "10";

	    int number0 = Integer.parseInt(input0, 2);
	    int number1 = Integer.parseInt(input1, 2);

	    int sum = number0 + number1;

	    System.out.println(Integer.toBinaryString(sum));
        
	}
}

output:

1100