Source Code : Mixing heavyweight and lightweight components

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Mixing heavyweight and lightweight components

import javax.swing.SwingUtilities;

import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;

public class Test {

  public static void main(String[] args) {
    ApplicationWindow window = new ApplicationWindow();
    window.setVisible(true);
  }
}
class ApplicationWindow extends JFrame {
  public ApplicationWindow() {
    this.setSize(200, 100);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    this.setLayout(new FlowLayout());
    Button exitButton = new Button("Exit");
    exitButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent event) {
        System.exit(0);
      }
    });
    this.add(exitButton);

    JMenuBar menuBar = new JMenuBar();
    JMenu menu = new JMenu("Overlapping Menu");
    JMenuItem menuItem = new JMenuItem("Overlapping Item");
    menu.add(menuItem);
    menuBar.add(menu);
    this.setJMenuBar(menuBar);
    this.validate();

  }
}

 

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