In this tutorials will teach you how to add two number using OOP concepts. This is an important for developing a java projects. there are many students who struggling with this area. so that I bring this article for all to clear the doubts.
First You have to Design the Form
After that you have to create the class Cal.java
1 2 3 4 5 6 7 8 9 10 11 | public class Cal { public int num1,num2,tot; // Create the Variables with Public Access <em>specifier</em> public int Add() // Create the Method { tot = num1 + num2; return tot; } } |
Paste the Code inside the Add Button
1 2 3 4 5 | Cal c = new Cal(); c.num1 = Integer.parseInt(txtNum1.getText()); c.num2 = Integer.parseInt(txtNum2.getText()); txttot.setText(String.valueOf(c.Add())); |
