java/65_MenuBar at main · PeiHui369/java · GitHub

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<Main.java>
public class Main {
    public static void main(String[] args) {

        new MyFram();

    }
}

<MyFram.java>
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

public class MyFram extends JFrame implements ActionListener {
    JMenuBar menuBar;
    JMenu fileMenu;
    JMenu editMenu;
    JMenu helpMenu;
    JMenuItem loadItem;
    JMenuItem saveItem;
    JMenuItem exitItem;
    ImageIcon loadIcon;
    ImageIcon saveIcon;
    ImageIcon exitIcon;

    MyFram(){

        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setSize(500,500);
        this.setLayout(new FlowLayout());

        loadIcon = new ImageIcon("folder.png");
        saveIcon = new ImageIcon("disk.png");
        exitIcon = new ImageIcon("door.png");

        menuBar = new JMenuBar();

        fileMenu = new JMenu("File");
        editMenu = new JMenu("Edit");
        helpMenu = new JMenu("Help");

        loadItem = new JMenuItem("Load");
        saveItem = new JMenuItem("Save");
        exitItem = new JMenuItem("Exit");

        loadItem.addActionListener(this);
        saveItem.addActionListener(this);
        exitItem.addActionListener(this);

        loadItem.setIcon(loadIcon);
        saveItem.setIcon(saveIcon);
        exitItem.setIcon(exitIcon);

        //Create shortcut keys (underlined)
        fileMenu.setMnemonic(KeyEvent.VK_F);//Alt + f for file
        editMenu.setMnemonic(KeyEvent.VK_E);//Alt + e for edit
        helpMenu.setMnemonic(KeyEvent.VK_H);//Alt + h for help
        //need to click the menu first
        loadItem.setMnemonic(KeyEvent.VK_L);//l for load
        saveItem.setMnemonic(KeyEvent.VK_S);//s for save
        exitItem.setMnemonic(KeyEvent.VK_E);//e for exit

        fileMenu.add(loadItem);
        fileMenu.add(saveItem);
        fileMenu.add(exitItem);

        menuBar.add(fileMenu);
        menuBar.add(editMenu);
        menuBar.add(helpMenu);

        this.setJMenuBar(menuBar);
        this.setVisible(true);

    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if(e.getSource()==loadItem){
            System.out.println("*beep boop* you loaded a file");
        }
        if(e.getSource()==saveItem){
            System.out.println("*beep boop* you saved a file");
        }
        if(e.getSource()==exitItem){
            System.exit(0);
        }
    }
}