Add two numbers using bitwise operators in java

Java program for Add two numbers using bitwise operators. Here problem description and explanation.

// Java program for
// Add two numbers using of bitwise operators
public class NumberAddition
{
	// Add two numbers
	public void addition(int a, int b)
	{
		// Display given numbers
		System.out.print("\n [(" + a + ") + (" + b + ")] ");
		// Auxiliary variable which are store the carry result
		int carry_bit = 0;
		// Executing loop, until b value is not zero
		while (b != 0)
		{
			// Get carry bits of a & b
			carry_bit = a & b;
			// Sum of bits of a ^ b
			a = a ^ b;
			// Shift the carry bit by one bit in left side
			b = carry_bit << 1;
		}
		// Display add result
		System.out.print(" : " + a);
	}
	public static void main(String[] args)
	{
		NumberAddition task = new NumberAddition();
		// Test Case
		task.addition(8, -2);
		task.addition(5, 3);
		task.addition(-3, -5);
	}
}

Output

 [(8) + (-2)]  : 6
 [(5) + (3)]  : 8
 [(-3) + (-5)]  : -8