Write the body for addition, subtraction, multiplication and division methods for the Calculator class

import java.lang.*;

import java.util.*;

public class Calculator

{

private int value;

private int x;

private int y;

public Calculator()

{

value = 0;

x = 0;

y = 0;

}

public int addition(int x, int y)

{

}

public int subtraction(int x, int y)

{

}

public int multiplication(int x, int y)

{

}

public double division(int x, int y)

{

}

)