برنامج يظهر من خلاله كيفية التعامل مع الإظهارات

برنامج يظهر من خلاله كيفية التعامل مع الإظهارات في البرامج ..
كما في الصور التالية:






الكود هو التالي:-

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.beans.*;


public class MyHoroscope extends JFrame {

Toolkit tk; //for getting the toolkit
Dimension dim; //for getting the screen resolution

JMenuBar menuBar;
JMenu menuFile, menuHelp, menuView;
JMenuItem itemShow, itemReset, itemExit, itemAbout, itemHelp, itemMetal, itemMotif, itemWindows;

JPanel panelHead, panelHead0, panelHead1;
JLabel lblName, lblBday;
JTextField txtName;
JButton butBday;

GridBagConstraints gbc;	

//myCalendar calendar;

public MyHoroscope() {
	
	super("Leo's Fortune Teller");
	
	menuBar = new JMenuBar();
	setJMenuBar(menuBar);
	
	menuFile = new JMenu("File");
	menuFile.setMnemonic('F');
	
	itemShow = new JMenuItem("Show Me");
	itemReset = new JMenuItem("Reset");
	itemExit = new JMenuItem("Exit");
	
	itemShow.setMnemonic('S');
	itemReset.setMnemonic('R');				
	itemExit.setMnemonic('X');
	
	menuFile.add(itemShow);
	menuFile.add(itemReset);
	menuFile.addSeparator();
	menuFile.add(itemExit);
	
	menuView = new JMenu("View");
	menuView.setMnemonic('V');
	
	itemMetal = new JMenuItem("Metal");
	itemMotif = new JMenuItem("Motifs");
	itemWindows = new JMenuItem("Windows");
	
	itemMetal.setMnemonic('M');
	itemMotif.setMnemonic('O');
	itemWindows.setMnemonic('W');
	
	itemMetal.setActionCommand("metal");
	itemMotif.setActionCommand("motif");
	itemWindows.setActionCommand("windows");
	
	itemMetal.addActionListener(lookandfeel);
	itemMotif.addActionListener(lookandfeel);
	itemWindows.addActionListener(lookandfeel);
	
	menuView.add(itemMetal);
	menuView.add(itemMotif);
	menuView.add(itemWindows);
					
	menuHelp = new JMenu("Help");
	menuHelp.setMnemonic('H');
	
	itemAbout = new JMenuItem("About");
	itemHelp = new JMenuItem("Help");
	
	itemAbout.setMnemonic('A');
	itemHelp.setMnemonic('H');
	
	menuHelp.add(itemAbout);
	menuHelp.add(itemHelp);
	
	menuBar.add(menuFile);
	menuBar.add(menuView);
	menuBar.add(menuHelp);
	
	getContentPane().add(header());
	//getContentPane().add(body());
	
	tk = this.getToolkit();
	dim = tk.getScreenSize();
	
	setBounds(dim.width/4, dim.height/4, 420, 340);
	setResizable(false);
	show();
}




protected JPanel header() {
	
	panelHead = new JPanel();
	panelHead.setLayout(new FlowLayout());
	panelHead0 = new JPanel();
	panelHead0.setLayout(new BorderLayout());
	panelHead1 = new JPanel();
	panelHead1.setLayout(new GridLayout(2,2));
	
	gbc = new GridBagConstraints();
	gbc.fill = GridBagConstraints.BOTH;
	
	lblName = new JLabel("Enter your Name:");
	lblBday = new JLabel("Enter your Birthday:");
	
	butBday = new JButton("Click Here!");
	butBday.addActionListener(months);	
	txtName = new JTextField("",15);

		
	panelHead1.add(lblName);
	panelHead1.add(txtName);
	panelHead1.add(lblBday);
	panelHead1.add(butBday);

	
	panelHead0.add(panelHead1, BorderLayout.CENTER);
	panelHead.add(panelHead0);
	
	return panelHead;
}

ActionListener lookandfeel = new ActionListener(){
	
	public void actionPerformed(ActionEvent ae){
		Object source = ae.getActionCommand();
		String plaf = "";
			
			if (source == "metal")
				plaf = "javax.swing.plaf.metal.MetalLookAndFeel";		
			else if (source == "motif")
				plaf = "com.sun.java.swing.plaf.motif.MotifLookAndFeel";
			else if (source == "windows")
				plaf = "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
					
			try {
		
					UIManager.setLookAndFeel(plaf);
					SwingUtilities.updateComponentTreeUI(MyHoroscope.this);
			} catch (Exception e) {

			
		}
			
	}		
	
};



ActionListener months = new ActionListener() {
	
	public void actionPerformed(ActionEvent ae) {
		
		//calendar = new myCalendar();
		//calendar.show();	
		
	}
};

public static void main(String args[]) {
	

	
	MyHoroscope horoscope = new MyHoroscope();
}
}