Solved

How to update JLabel of parent JFrame?

Posted on 2002-03-08
3
480 Views
Last Modified: 2007-12-19

I have a JFrame which I call MainDesktop and to which I add a desktopPane for holding JInternalFrames.

desktop = new JDesktopPane();
msgLabel = new JLabel(" ", JLabel.LEFT);

container = this.getContentPane();
container.add(desktop, BorderLayout.CENTER);
container.add(msgLabel, BorderLayout.SOUTH);

One of these JInternalFrames is a LoginFrame. When someone enters an invalid userid/password, I want to display a message in msgLabel of the parent frame MainDesktop. How do I update the label?

TIA
SK Bali





0
Comment
Question by:SKBali
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 2

Accepted Solution

by:
mzimmer74 earned 75 total points
ID: 6851248
Well, if you pass a reference of MainDesktop to your LoginFrame you can call a method in MainDesktop from LoginFrame (say, setLabelText(String text)) that merely calls msgLabel.setText(text).  I think that'll do what you want.
0
 

Expert Comment

by:maggari
ID: 6854710
If both the frames are local to a class, make the msgLabel global or else if both frames are separate classes themselves, then do what mzimmer74 suggested. This should help.
0
 

Author Comment

by:SKBali
ID: 6857342
Thanks for your help.
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Java Flight Recorder and Java Mission Control together create a complete tool chain to continuously collect low level and detailed runtime information enabling after-the-fact incident analysis. Java Flight Recorder is a profiling and event collectio…
Video by: Michael
Viewers learn about how to reduce the potential repetitiveness of coding in main by developing methods to perform specific tasks for their program. Additionally, objects are introduced for the purpose of learning how to call methods in Java. Define …
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
Suggested Courses

738 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question