Java Swing Calculator Program | Java Swing Calculator Code Example | Java Swing Calculator Tutorial

                     In this post, we will see Java Swing Calculator Program | Java Swing Calculator Code Example | Java Swing Calculator Tutorial.

Watch following video:

Watch on YouTube: https://www.youtube.com/watch?v=HOVJ4Ab1E7E
                    

                     To know what is Swing, how Swing is different from Applet, how to create Swing Application; check this post http://www.comrevo.com/2017/08/swing-in-java-with-example.html                    

                    To know how to generate event in Java Swing along with Java Swing program for addition of two numbers; check this post http://www.comrevo.com/2017/08/java-swing-program-for-addition-of-two-numbers.html 
  
                    Here, we will see Java Swing program for Calculator.  Go through the following example: 
                                
SwingCalculator.java 

import javax.swing.*; import java.awt.*; import java.awt.event.*; public class SwingCalculator {    public static void main(String args[])      {        Abc obj=new Abc();      } } class Abc extends JFrame implements ActionListener {   JLabel l1,l2,l3;   JTextField t1,t2;   JButton b1,b2,b3,b4;      public Abc()    {      setLayout(new FlowLayout());      l1=new JLabel("First Number:");      t1=new JTextField();       t1.setColumns(20);      l2=new JLabel("Second Number:");      t2=new JTextField();      t2.setColumns(20);      b1=new JButton("Add");      b2=new JButton("Sub");      b3=new JButton("Mul");      b4=new JButton("Div");      l3=new JLabel("Result");            add(l1);      add(t1);      add(l2);      add(t2);      add(b1);      add(b2);      add(b3);      add(b4);      add(l3);      b1.addActionListener(this);      b2.addActionListener(this);      b3.addActionListener(this);      b4.addActionListener(this);                 setVisible(true);      setSize(250,400);      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);   }  public void actionPerformed(ActionEvent ae)   {     Double num1=Double.parseDouble(t1.getText());     Double num2=Double.parseDouble(t2.getText());     if(ae.getSource()==b1)      {        Double value=num1+num2;        l3.setText(""+value);      }     if(ae.getSource()==b2)      {        Double value=num1-num2;        l3.setText(""+value);      }     if(ae.getSource()==b3)      {        Double value=num1*num2;        l3.setText(""+value);      }     if(ae.getSource()==b4)      {        Double value=num1/num2;        l3.setText(""+value);      }   } }

  

How To Run:

parag@parag-Inspiron-N4010:~/Desktop/prog$ javac SwingCalculator.java  parag@parag-Inspiron-N4010:~/Desktop/prog$ java SwingCalculator

Output:

  

                        
                 Check MouseListener example in Java Swing in this post http://www.comrevo.com/2017/08/java-swing-mouselistener-example.html  

                 Check Java Swing program for using CheckBox component in this post http://www.comrevo.com/2017/08/java-swing-checkbox-example.html

                 Check Java Swing program for using Radio Buttons in this post http://www.comrevo.com/2017/08/java-swing-radio-button-example.html

                 Check other posts on Java Programming in this link http://www.comrevo.com/2017/08/java-programming.html