Name: sv35042 Date: 10/18/2002


FULL PRODUCT VERSION :
java version "1.4.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0_01-b03)
Java HotSpot(TM) Client VM (build 1.4.0_01-b03, mixed mode)

FULL OPERATING SYSTEM VERSION : Microsoft Windows 2000
[Version 5.00.2195] Sevice Pack 1 Build 2195


A DESCRIPTION OF THE PROBLEM :
Using a regular US Keyboard with an ALT Key and a
numeric pad, Extended ASCII characters can be entered
by holding down the ALT Key, pressing a valid sequence
of numbers from the numeric pad, and then releasing
the ALT Key.
 
For example: the value "ó" can be generated by
ALT+0243.
 
I noticed that its possible to paste these types of
characters into a JTextField, but when you try to
use the keyboard, the wrong value is inputted.
 
When I try to enter "ó" for example, I end up with
"±" instead.

In fact you can see this using sample code I found
to reproduce this:

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

import javax.swing.*;

public class KeyDemo extends JFrame implements KeyListener{
    private String line1 = "", line2 = "", line3 = "";
    private JTextArea textArea;
    
    public KeyDemo()
    {
        super( "Key Demo" );
        textArea = new JTextArea( 10, 15 );
        textArea.setText( "Press Key" );
        textArea.setEnabled(false);
        getContentPane().add(textArea);
        
        addKeyListener(this);
        
        setSize(350,100);
        setVisible(true);
    }
    
    public void keyPressed( KeyEvent event )
    {
        line1 = "Key pressed: " + event.getKeyText(
event.getKeyCode() );
        setLines2and3( event );
    }
    
    public void keyReleased( KeyEvent event )
    {
        line1 = "Key released: " + event.getKeyText(
event.getKeyCode() );
        setLines2and3( event );
    }
    
    public void keyTyped( KeyEvent event )
    {
        line1 = "Key typed: " + event.getKeyChar();
        setLines2and3( event );
    }
    
    
    private void setLines2and3( KeyEvent event )
    {
        line2 = "This key is " + (event.isActionKey
() ? "" : "not " ) +
        "an action key";
        
        String temp = event.getKeyModifiersText(
event.getModifiers() );
        
        line3 = "Modifier keys pressed: " +
        (temp.equals( "" ) ? "none" : temp );
        
        textArea.setText(line1 + "\n" + line2 +"\n" + line3
+ "\n");
    }
    
    public static void main( String args[] )
    {
        KeyDemo application = new KeyDemo();
        
        application.getDefaultCloseOperation();
    }
}

execute the program and type ALT+0243. You should see
ó but instead you see ± instead
 
Refer to http://charlie.balch.org/asp/ascii.asp to test
other extended ascii characters.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Write a simple application/applet with a textfield box
or use the sample code I provided.
2. Launch the app and set focus on the text field via the
mouse.
3. Type ALT+0243 and examine the character in the
textfield/textarea.

EXPECTED VERSUS ACTUAL BEHAVIOR :
Expected Results: I should see ó when I type ALT+0243. To
prove this is the expected results, launch a browser,
notepad, wordpad, or any other non-java application and
type that sequence of keystrokes. You'll always see ó.
 
Actual Results: I see ± instead.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

public class KeyDemo extends JFrame implements KeyListener{
    private String line1 = "", line2 = "", line3 = "";
    private JTextArea textArea;
    
    public KeyDemo()
    {
        super( "Key Demo" );
        textArea = new JTextArea( 10, 15 );
        textArea.setText( "Press Key" );
        textArea.setEnabled(false);
        getContentPane().add(textArea);
        
        addKeyListener(this);
        
        setSize(350,100);
        setVisible(true);
    }
    
    public void keyPressed( KeyEvent event )
    {
        line1 = "Key pressed: " + event.getKeyText( event.getKeyCode() );
        setLines2and3( event );
    }
    
    public void keyReleased( KeyEvent event )
    {
        line1 = "Key released: " + event.getKeyText( event.getKeyCode() );
        setLines2and3( event );
    }
    
    public void keyTyped( KeyEvent event )
    {
        line1 = "Key typed: " + event.getKeyChar();
        setLines2and3( event );
    }
    
    
    private void setLines2and3( KeyEvent event )
    {
        line2 = "This key is " + (event.isActionKey() ? "" : "not " ) +
        "an action key";
        
        String temp = event.getKeyModifiersText( event.getModifiers() );
        
        line3 = "Modifier keys pressed: " +
        (temp.equals( "" ) ? "none" : temp );
        
        textArea.setText(line1 + "\n" + line2 +"\n" + line3 + "\n");
    }
    
    public static void main( String args[] )
    {
        KeyDemo application = new KeyDemo();
        
        application.getDefaultCloseOperation();
    }
}


---------- END SOURCE ----------
(Review ID: 159422)
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