Handling Choice Box in java

In this example we are going to handle Choice Box.
To control the Choice Box we are using three type of package. One is java.awt.* second is  java.applet.* and third is java.awt.event.*; .The java.awt.* is used for GUI interface. AWT classes are contain in this package. The  java.applet.* package is used to create an applet and java.awt.event.*; defined within the java.awt.*; package is a subclass of EventObject. It is a super class of all AWT-based event.

The Choice class is used to create a pop-up list of items from which the user may choose. A choice control is a form of menu. Each item in a list is a string that appears as a left-justified label in the order it is add to the choice object.
To add a selection to the list, call add().
void add(string name);

In our example first we implement two interface:
ItemListener();  each listener implement the ItemLinstner.
itemStateChange(); When a option is selected or an event is occur this interface is called.
To deterrmine which item is currently selected,you may call :
String getSelectedItem(); It returns a string containing the name of the item.
or  int getSelectedIndex(); It return the index of the item.
To obtain the number of item in the list call:
 int getItemCount();
In our example we create two choice menu one is  country and other is city.

//Choice

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/*
<applet code="ChoiceDemo" width=300 height=200>
</applet>
*/
public class ChoiceDemo extends Applet implements ItemListener {
Choice country,city;
String msg="";
public void init(){
 country = new Choice();
 city = new Choice();
country.add("India");
country.add("Rusia");
country.add("Pakistan");
country.add("Srilanka");
city.add("unnao");
city.add("Lucknow"); 
city.add("Lahour"); 
city.add("Kuvait");
city.select("Caindy");
add(country);
add(city);
 country.addItemListener(this);
city.addItemListener(this);
}
public void itemStateChanged(ItemEvent ie){
repaint();
}
public void paint(Graphics g){
msg="Your country name is:";
msg+=country.getSelectedItem();
g.drawString(msg,6,120);
msg="your city name is:";
msg += city.getSelectedItem();
g.drawString(msg,6,140);
}
}

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Output Of Example