Java Progran to implement Dialog box

 Write a Java Progran to implement Dialog box:-

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/*
<applet code="DialogDemo" width =250 height = 250>
</applet>
*/
class SampleDialog extends Dialog implements ActionListener
{
SampleDialog(Frame parent,String title)
{
super(parent,title,false);
setLayout(new FlowLayout());
setSize(300,200);
add(new Label("Press this button: "));
Button b;
add(b= new Button("Cancel"));
b.addActionListener(this);
}
public void actionPerformed(ActionEvent ae)
{
dispose();
}
public void paint(Graphics g)
{
g.drawString("This is in the dialog box",10,70);
}
}
class MenuFrame extends Frame
{
String msg = "";
CheckboxMenuItem debug,test;
MenuFrame(String title)
{
super(title);
MenuBar mbar = new MenuBar();
setMenuBar(mbar); //Menu Bar added on applet
Menu file = new Menu("File"); //Menu File is created
MenuItem item1,item2,item3,item4,item5; //Menu items for File created
file.add(item1=new MenuItem("New...")); //Menu Items added in Menu
file.add(item2=new MenuItem("Open..."));
file.add(item3=new MenuItem("Close"));
file.add(item4=new MenuItem("-"));
file.add(item5=new MenuItem("Quit..."));
mbar.add(file); // Menu File added on Menu
Bar
Menu edit = new Menu("Edit"); //Menu Edit is created
MenuItem item6,item7,item8,item9; //Menu items for Edit created
edit.add(item6=new MenuItem("Cut")); //Menu Items added in Menu
edit.add(item7=new MenuItem("Copy"));
edit.add(item8=new MenuItem("Paste"));
edit.add(item9=new MenuItem("-"));
Menu sub = new Menu("Special",true); //Menu Special is
created
MenuItem item10,item11,item12; //Menu items for Special
created
sub.add(item10=new MenuItem("First")); //Menu Items added in Menu
sub.add(item11=new MenuItem("Second"));
sub.add(item12=new MenuItem("Third"));
edit.add(sub); //Menu Special added in Edit Menu
debug = new CheckboxMenuItem("Debug");
edit.add(debug);
test = new CheckboxMenuItem("Testing");
edit.add(test);
mbar.add(edit); //Menu Edit added on Menu
Bar
MyMenuHandler handler = new MyMenuHandler(this);//added a handler for
menu
item1.addActionListener(handler); //added an Action Listener for each
item
item2.addActionListener(handler);
item3.addActionListener(handler);
item4.addActionListener(handler);
item5.addActionListener(handler);
item6.addActionListener(handler);
item7.addActionListener(handler);
item8.addActionListener(handler);
item9.addActionListener(handler);
item10.addActionListener(handler);
item11.addActionListener(handler);
item12.addActionListener(handler);
debug.addItemListener(handler);
test.addItemListener(handler);
MyWindowAdapter adapter = new MyWindowAdapter(this);
addWindowListener(adapter);
}
public void paint(Graphics g)
{
g.drawString(msg,10,200);
if(debug.getState())
g.drawString("Debug is on...",10,220);
else
g.drawString("Debug is off...",10,220);
if(test.getState())
g.drawString("Testing is on...",10,240);
else
g.drawString("Testing is off...",10,240);
}
}
class MyWindowAdapter extends WindowAdapter
{
MenuFrame menuFrame;
public MyWindowAdapter(MenuFrame menuFrame)
{
this.menuFrame=menuFrame;
}
public void WindowClosing(WindowEvent we)
{
menuFrame.dispose();
}
}
class MyMenuHandler implements ActionListener,ItemListener
{
MenuFrame menuFrame;
public MyMenuHandler(MenuFrame menuFrame)
{
this.menuFrame=menuFrame;
}
public void actionPerformed(ActionEvent ae)
{
String msg="You selected";
String arg=(String)ae.getActionCommand();
if(arg.equals("New..."))
{
msg+=" New.";
SampleDialog d= new SampleDialog(menuFrame,"New Dialog Box");
d.setVisible(true);
}
else if(arg.equals("Open..."))
msg+=" Open.";
else if(arg.equals("Close"))
msg+=" Close.";
else if(arg.equals("Quit..."))
msg+=" Quit.";
else if(arg.equals("Edit"))
msg+=" Edit.";
else if(arg.equals("Cut"))
msg+=" Cut.";
else if(arg.equals("Copy"))
msg+=" Copy.";
else if(arg.equals("Paste"))
msg+=" Paste.";
else if(arg.equals("First"))
msg+=" First.";
else if(arg.equals("Second"))
msg+=" Second.";
else if(arg.equals("Third"))
msg+=" Third.";
else if(arg.equals("Debug"))
msg+=" Debug.";
else if(arg.equals("Testing"))
msg+=" Testing.";
menuFrame.msg=msg;
menuFrame.repaint();
}
public void itemStateChanged(ItemEvent ie)
{
menuFrame.repaint();
}
}
public class DialogDemo extends Applet
{
Frame f;
public void init()
{
f=new MenuFrame("Menu Demo");
int width=Integer.parseInt(getParameter("width"));
int height=Integer.parseInt(getParameter("height"));
setSize(new Dimension(width,height));
f.setSize(width,height);
f.setVisible(true);
}
public void start()
{
f.setVisible(true);
}
public void stop()
{
f.setVisible(false);
}
}
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