JDK-4915973 : Applet's TextField refuses input when returning to it from another page
  • Type: Bug
  • Component: deploy
  • Sub-Component: plugin
  • Affected Version: 1.4.2_01
  • Priority: P4
  • Status: Closed
  • Resolution: Duplicate
  • OS: solaris_8
  • CPU: sparc
  • Submitted: 2003-09-02
  • Updated: 2003-09-03
  • Resolved: 2003-09-03
Related Reports
Duplicate :  
Description

Name: gm110360			Date: 09/02/2003


FULL PRODUCT VERSION :
java version "1.4.2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2-b28)
Java HotSpot(TM) Client VM (build 1.4.2-b28, mixed mode)


FULL OS VERSION :
SunOS image3 5.8 Generic_108528-19 sun4u sparc SUNW,Ultra-60

EXTRA RELEVANT SYSTEM CONFIGURATION :
Behaviour observed in Netscape browser 7.0

A DESCRIPTION OF THE PROBLEM :
When accessing the following applet's textfield:

public class textf extends Applet {
  TextField tf = new TextField("Applet",8);

        public void init() {
      add(tf);
      add(tf1);
      add(tf2);
      tf.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e){
            System.out.println("field is: " + e.getActionCommand());
          }
        }
      );
        }
}

from the foll. html file:
<applet archive=tf.jar code=textf.class height=100 width=200></applet>

the TextField has the focus when the applet is accessed for the first time.
However, if one goes to a different page and returns to the applet, the
TextField no longer allows user input.



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
- Compile the applet under jre 1.4.2; run it in NS 7.0 on a Sun Solaris 8
  where NS uses the jre 1.4.2 Hotspot virtual machine.
  You should see the error

- Access the same applet compilation from a PC using Windows 2000, through
  MSIE 6.0 or NS 7.1, using jre 1.4.0_01 and it should work ok.

- Compile the applet under jre 1.1.18_10; run it in NS 4.75 on a Sun Solaris 8
  where NS uses the jre 1.1.5, and the applet should work consistently.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
- Compile the applet under jre 1.4.2; run it in NS 7.0 on a Sun Solaris 8
  where NS uses the jre 1.4.2 Hotspot virtual machine.
  The TextField should allow input when it is visible.

- Access the same applet compilation from a PC using Windows 2000, through
  MSIE 6.0 or NS 7.1, using jre 1.4.0_01 and it should work ok.

- Compile the applet under jre 1.1.18_10; run it in NS 4.75 on a Sun Solaris 8
  where NS uses the jre 1.1.5, and the applet should work consistently.

ACTUAL -
- Compile the applet under jre 1.4.2; run it in NS 7.0 on a Sun Solaris 8
  where NS uses the jre 1.4.2 Hotspot virtual machine.
  You should see the error

- Access the same applet compilation from a PC using Windows 2000, through
  MSIE 6.0 or NS 7.1, using jre 1.4.0_01 and it should work ok.

- Compile the applet under jre 1.1.18_10; run it in NS 4.75 on a Sun Solaris 8
  where NS uses the jre 1.1.5, and the applet should work consistently.


ERROR MESSAGES/STACK TRACES THAT OCCUR :
No error messages.

REPRODUCIBILITY :
This bug can be reproduced always.

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

public class textf extends Applet {
  TextField tf = new TextField("Applet",8);

        public void init() {
      add(tf);
      add(tf1);
      add(tf2);
      tf.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e){
            System.out.println("field is: " + e.getActionCommand());
          }
        }
      );
        }
}


Source code of the html file to invoke the applet:
<applet archive=tf.jar code=textf.class height=100 width=200></applet>

---------- END SOURCE ----------
(Incident Review ID: 194019) 
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