Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

How to update JLabel of parent JFrame?

Posted on 2002-03-08
3
Medium Priority
?
502 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
3 Comments
 
LVL 2

Accepted Solution

by:
mzimmer74 earned 300 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

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

After being asked a question last year, I went into one of my moods where I did some research and code just for the fun and learning of it all.  Subsequently, from this journey, I put together this article on "Range Searching Using Visual Basic.NET …
Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
Viewers will learn about if statements in Java and their use The if statement: The condition required to create an if statement: Variations of if statements: An example using if statements:
This tutorial will introduce the viewer to VisualVM for the Java platform application. This video explains an example program and covers the Overview, Monitor, and Heap Dump tabs.
Suggested Courses
Course of the Month11 days, 10 hours left to enroll

564 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