Simple Addition Program in Java

In this Java program, the user is prompt to input two integer numbers and displays the sum in Graphical User interface (GUI).

• Problem: Write and applicaton the will display the sum, inputs by the user in Graphical User Interface(GUI).

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import javax.swing.*;

public class  Addition{

    public static void main(String args[]){

        //Declaring the variables
        String fNumber, sNumber;
        int num1, num2, sum;

        //Reads the input values by the user
        fNumber = JOptionPane.showInputDialog("Enter first number: ");
        sNumber = JOptionPane.showInputDialog("Enter second number");

        //Convert the values int integers

        num1 = Integer.parseInt(fNumber);
        num2 = Integer.parseInt(sNumber);

        //Initialize and calculate
        sum = num1 + num2;

        //Displays the output in Graphical User Interface
        JOptionPane.showMessageDialog(null, "The result is: " + sum, "Addition Program",
                JOptionPane.PLAIN_MESSAGE);

        System.exit(0);

    }
}

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Here is the output. In this case assumes user inputs the number "2", "3"