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

public class App extends JFrame implements ActionListener {
    public static void main(String args[]) {
        new App();

    }

    public App() {
        /* Set layout for this containter */
        this.getContentPane().setLayout(
			new BoxLayout(this.getContentPane(), BoxLayout.Y_AXIS));

        /* Add Menu Bar to this JFrame, add Menu: "File" */
        JMenuBar menubar = new JMenuBar();
        this.setJMenuBar(menubar);
        JMenu filemenu = new JMenu("File");
        menubar.add(filemenu);

        /* Add Menu Item: "Open" */
        open_menu_item = new JMenuItem("Open");
        open_menu_item.addActionListener(this);
        filemenu.add(open_menu_item);

        /* Add Seperating Space between Menu Item for it to look nice*/
        filemenu.addSeparator();

        /* Add Menu Item: "Exit" */
        file_menu_item = new JMenuItem("Exit");
        file_menu_item.addActionListener(this);
        filemenu.add(file_menu_item);

        /* Create JLabel */
        label = new JLabel("No Image Loaded");
        this.getContentPane().add(label); //Add to pane

        /* Create button and add to pane*/
        button = new JButton("Clear");
        button.addActionListener(this);
        this.getContentPane().add(button);

        /* Standard Finishing calls */
        this.pack();                      //Tell JFrame to layout its components
        this.setVisible(true);            //Make JFrame visibile
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    
	//Tell JFrame to exit the program when the window is closed
    }

 /* Handle Events for this JFrame's Components */
    public void actionPerformed(ActionEvent e) {

        if (e.getSource() == button) {
            label.setIcon(null);
	    label.setText("No Image Loaded");
            this.pack();
        } else if (e.getSource() == open_menu_item) {
		try {
			JFileChooser chooser = new JFileChooser();
			int returnVal = chooser.showOpenDialog(this);
			if(returnVal == JFileChooser.APPROVE_OPTION)
			{
				Icon image = new ImageIcon(		
					chooser.getSelectedFile().getName());
				label.setIcon(image);
				label.setText(null);
				this.pack();
			}

		} catch (Exception except) {
			JOptionPane.showMessageDialog(this, except.toString());
		}

		
        }  else if (e.getSource() == file_menu_item) {
            System.exit(0);
        }


    }

    JButton button;
    JLabel label;
    JMenuItem open_menu_item;
    JMenuItem file_menu_item;
}