Cal.java for making necessary constructor and methods

package calculation;

public class Cal {

    private int num1 = 0;
    private int num2 = 0;

    public Cal(int a, int b) {
        this.num1 = a;
        this.num2 = b;
    }

    public int Addition() {
        int result = this.num1 + this.num2;
        return result;

    }

    public int Subtraction() {
        int result = this.num1 - this.num2;
        return result;

    }

    public int Multiplication() {
        int result = this.num1 * this.num2;
        return result;

    }

    public int Division() {
        int result = this.num1 / this.num2;
        return result;

    }
}

Calculation.java for making objects

package calculation;

public class Calculation {

    public static void main(String[] args) {
        Cal c1 = new Cal(5, 10);
        Cal c2 = new Cal(25, 30);
        //for first 5,10
        System.out.println("Addition for first object is " + c1.Addition());
        System.out.println("Subtraction for first object is " + c1.Subtraction());
        System.out.println("Multiplication for first object is " + c1.Multiplication());
        System.out.println("Division  for first object is " + c1.Division());
        System.out.println();

        System.out.println("Addition for second object is " + c2.Addition());
        System.out.println("Subtraction for second object is " + c2.Subtraction());
        System.out.println("Multiplication for second object is " + c2.Multiplication());
        System.out.println("Division  for second object is " + c2.Division());
        System.out.println();

    }

}