How To Extends From JFrame And Implements ActionListener In Java
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Source Code:
package JavaDB_001;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
//Extends From JFrame
//implements ActionListener
public class Project extends JFrame implements ActionListener{
JTextField num1 = new JTextField(20);
JTextField num2 = new JTextField(20);
JTextField sum = new JTextField(20);
JButton btn = new JButton("Calcul");
public Project(){
num1.setBounds(20, 10, 100, 20);
num2.setBounds(20, 40, 100, 20);
btn.setBounds(140, 20, 100, 20);
sum.setBounds(250, 20, 100, 20);
//Add the ActionListener to the Button
btn.addActionListener(this);
setLayout(null);
add(num1);
add(num2);
add(btn);
add(sum);
setSize(400, 120);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().setBackground(Color.decode("#bdb76b"));
setVisible(true);
}
public static void main(String[] args){
new Project();
}
@Override
public void actionPerformed(ActionEvent e) {
int a = Integer.parseInt(num1.getText());
int b = Integer.parseInt(num2.getText());
int c = a + b;
sum.setText(Integer.toString(c));
}
}
///////////////////////////////////////////////////////////////////////OUTPUT:
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| OUTPUT FORM |
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| When we click in the button we will see the sum of the two textboxes in another textbox |
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