3. The design of a graphical user interface with a menu program, using cascading menus to control the font and color of text, the results of the operation as shown in the following figure

3. The design of a graphical user interface with a menu program, using cascading menus to control the font and color of text, the results of the operation as shown in the following figure

Import Javax.swing.*;import Java.awt.event.*;import java.awt.*;
	public class Menutest extends JFrame implements actionlistener{JMenuBar = new JMB ();
	JMenu fontmenu = new JMenu ("Font (F)");
	JMenu Helpmenu = new JMenu ("help");
	JMenu stylemenu = new JMenu ("style");
	JMenu colormenu = new JMenu ("color");
	JMenuItem exitmenu = new JMenuItem ("Exit");
	
	JMenuItem aboutmenu = new JMenuItem ("about");
	JCheckBoxMenuItem Boldmenu = new JCheckBoxMenuItem ("Bold (B)");
	
	JCheckBoxMenuItem Italicmenu = new JCheckBoxMenuItem ("Italic");
	JMenuItem redmenu = new JMenuItem ("Red");
	JMenuItem greenmenu = new JMenuItem ("green");
	
	JMenuItem bluemenu = new JMenuItem ("Blue");
	
	JTextArea Txtdemo = new JTextArea ("Sample text");
	
	int bold,italic;
		Public Menutest () {Setjmenubar (JMB);
		Jmb.add (Fontmenu);
		
		Jmb.add (Helpmenu);
		Fontmenu.setmnemonic (Keyevent.vk_f);
		
		Boldmenu.setmnemonic (Keyevent.vk_b);
		Fontmenu.add (Stylemenu);
		Fontmenu.add (Colormenu);
		
		Fontmenu.addseparator ();
		Fontmenu.add (Exitmenu); FontmeNu.add (Aboutmenu);
		Stylemenu.add (Boldmenu);
		
		Stylemenu.add (Italicmenu);
		Colormenu.add (Redmenu);
		Colormenu.add (Greenmenu);
		
		Colormenu.add (Bluemenu);
		Exitmenu.addactionlistener (this);
		
		Aboutmenu.addactionlistener (this);
		Boldmenu.addactionlistener (this);
		
		Italicmenu.addactionlistener (this);
		Redmenu.addactionlistener (this);
		Greenmenu.addactionlistener (this);
		
		Bluemenu.addactionlistener (this);
		
		Getcontentpane (). Add (Txtdemo);
		Settitle ("Menu control font and color");
		SetSize (350,250);		
		SetVisible (TRUE);		
	Setdefaultcloseoperation (Jframe.exit_on_close);
		public void actionperformed (ActionEvent e) {String cmd = E.getactioncommand ();
		if (Cmd.equals ("Red")) Txtdemo.setforeground (color.red);
		else if (cmd.equals ("green")) Txtdemo.setforeground (Color.green);
		else if (cmd.equals ("Blue")) Txtdemo.setforeground (Color.Blue); else if (Cmd.equals ("bold")) Bold = Boldmenu.isselected ()?
		Font.BOLD:Font.PLAIN; else if (cmd.equals ("italic")) Italic = Italicmenu. isselected ()?
		Font.ITALIC:Font.PLAIN;
		
		else if (Cmd.equals ("Exit")) System.exit (0);		
	Txtdemo.setfont (New Font ("Serif", Bold + italic,24));
	public static void Main (string[] args) {menutest TM = new Menutest ();


 }
}