Answer to Question #265277 in Java | JSP | JSF for Shan

Question

Create a class “Calculator” with two variables, a constructor with no parameter and two functions for add and multiply. Create a class TestApp with a main function and create object of Calculator class to call functions.

Answer 1

public class Calculator {

 private long var1;
 private long var2;

 public Calculator() {
 }

 public long multiply() {
 return var1 * var2;
 }

 public long add() {
 return var1 + var2;
 }

 public void setVar1(long var1) {
 this.var1 = var1;
 }

 public void setVar2(long var2) {
 this.var2 = var2;
 }

 public long getVar1() {
 return var1;
 }

 public long getVar2() {
 return var2;
 }
}

public class TestApp {

 public static void main(String[] args) {
 Calculator calculator = new Calculator();

 //init variables
 calculator.setVar1(-10);
 calculator.setVar2(72);

 System.out.println("The sum of " + calculator.getVar1() + " and " + calculator.getVar2() + " is " + calculator.add());
 System.out.println("The multiplication of " + calculator.getVar1() + " and " + calculator.getVar2() + " is " + calculator.multiply());

 }
}