Re: How do I know which choice box has been selected?

"Andrew Thompson" <>
19 Feb 2007 06:56:41 -0800
On Feb 20, 12:48 am, "" <>

(post reorganised to suit my reply)

Why doesn't my line of code:
strChoiceName = (String)e.getSource();
 do anything?

Excuse me? If the version of the JVM/SDK
does not do 'anything' it is obviously broken.

Always copy/paste specific error messages,
rather than provide a vague and incomplete
description of the result.

..Can you give me an example?

import java.awt.*;
import java.awt.event.*;

class ChoiceTest extends Panel implements ItemListener {

  TextArea ta;

  ChoiceTest() {
    super(new BorderLayout());
    ta = new TextArea();
    add( ta, BorderLayout.CENTER );

    Panel p = new Panel( new GridLayout() );
    add(p, BorderLayout.NORTH );
    for (int ii=0; ii<5; ii++) {
      Choice choice = new Choice();
      for (int jj=0; jj<10; jj++) {
        choice.add( "Ch.: " + ii + " item: " + jj );

  public void itemStateChanged(ItemEvent ie) {
    ta.append( ie.getSource().toString() + "\n" );

  public static void main(String[] args) {
    Frame f = new Frame("Choice Test");
    ChoiceTest ct = new ChoiceTest();
    f.add( ct );

    f.addWindowListener( new WindowAdapter(){
      public void windowClosing(WindowEvent we) {
    } );


Andrew T.

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