#76 Lambda Expression - Java Arabic

[@flintyex.6984]

ty

[@faroukhinnawi2266]

Mashallah 😊

[@itcollegerarabic]

public class Main {
public static void main(String[] args) {
/* lambda expression = Lambda Expressions were added in Java 8.
* is a short block of code which takes in parameters and returns a value.
* Lambda expressions are similar to methods, but they do not need a name
* and they can be implemented right in the body of a method.
* also known as an anonymous method
* a shorter way to write anonymous classes with only one method
*
* need to use a functional interface or use a pre-defined functional interface
* they contain only one abstract method
* ex. ActionListener
*
* can be used in any place where a functional interface is required
* How to use a lambda expression:
* (arguments) -> {statement/s}
*/


new MyFrame();
}
}
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import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
//public class MyFrame extends JFrame implements ActionListener{
public class MyFrame extends JFrame{

public MyFrame() {
JButton btnButton = new JButton();
btnButton.setBounds(100, 100, 250, 150);
btnButton.setText("Click me");

btnButton.addActionListener(e->System.out.println("I am from Button"));
// btnButton.addActionListener(this);
// btnButton.addActionListener(new ActionListener() {
// @Override
// public void actionPerformed(ActionEvent e) {
// // TODO Auto-generated method stub
//
// System.out.println("I am from Button");
// }
// });

this.setSize(500,500);
this.setLayout(null);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
this.add(btnButton);
}
// @Override
// public void actionPerformed(ActionEvent e) {
// // TODO Auto-generated method stub
// System.out.println("I am from Button");
// }
}