•
•
•
•
What is DaniWeb IT Discussion Community?
You're currently browsing the Java section within the Software Development category of DaniWeb, a massive community of 426,900 software developers, web developers, Internet marketers, and tech gurus who are all enthusiastic about making contacts, networking, and learning from each other. In fact, there are 2,336 IT professionals currently interacting right now! Registration is free, only takes a minute and lets you enjoy all of the interactive features of the site.
Please support our Java advertiser: Lunarpages Java Web Hosting
Views: 13731 | Replies: 9
 |
•
•
Join Date: Nov 2004
Posts: 2
Reputation: 
Rep Power: 0
Solved Threads: 0
Newbie Poster
Is there a cleaner way to close out of a GUI window in Java then just clicing the X in the upper right hand corner? When I do this I get a NullPointerException error.
Is there a way to put an "Exit" button in a GUI window so that the window (program) closes much cleaner?
I'm aware of the system.exit command, but that's not what I'm looking for.
Any suggestions?
Is there a way to put an "Exit" button in a GUI window so that the window (program) closes much cleaner?
I'm aware of the system.exit command, but that's not what I'm looking for.
Any suggestions?
•
•
Join Date: Jul 2004
Location: Pakistan
Posts: 1,673
Reputation:
Rep Power: 8
Solved Threads: 49
I think System.exit is the quickest way shutdown apps in java. I usually disble the X button of the GUI and provide an exit menu for exiting.
•
•
Join Date: Nov 2004
Posts: 2
Reputation:
Rep Power: 0
Solved Threads: 0
Newbie Poster
•
•
•
•
Originally Posted by nanosani
I think System.exit is the quickest way shutdown apps in java. I usually disble the X button of the GUI and provide an exit menu for exiting.
Yes, I know about the System.exit piece, but how do you disable the X button and provide an exit menu for exiting?
•
•
Join Date: Nov 2004
Location: Netherlands
Posts: 5,752
Reputation:
Rep Power: 18
Solved Threads: 199
if you get an exception on application shutdown there's something wrong with your application and you shouldn't blame the shutdown hook for it.
As to providing a menu, check your Swing tutorials...
As to providing a menu, check your Swing tutorials...
•
•
Join Date: Jul 2004
Location: Pakistan
Posts: 1,673
Reputation:
Rep Power: 8
Solved Threads: 49
As to specifically see javax.swing.JMenu API to insert menus in your app ... and to disable the X button :
see javax.swing.JFrame --> setDefaultCloseOperation(int )
see javax.swing.JFrame --> setDefaultCloseOperation(int )
•
•
•
•
setDefaultCloseOperation
public void setDefaultCloseOperation(int operation)Sets the operation that will happen by default when the user initiates a "close" on this frame. You must specify one of the following choices:
DO_NOTHING_ON_CLOSE (defined in WindowConstants): Don't do anything; require the program to handle the operation in the windowClosing method of a registered WindowListener object.
HIDE_ON_CLOSE (defined in WindowConstants): Automatically hide the frame after invoking any registered WindowListener objects.
DISPOSE_ON_CLOSE (defined in WindowConstants): Automatically hide and dispose the frame after invoking any registered WindowListener objects.
EXIT_ON_CLOSE (defined in JFrame): Exit the application using the System exit method. Use this only in applications.
The value is set to HIDE_ON_CLOSE by default.
•
•
Join Date: Dec 2004
Posts: 4
Reputation:
Rep Power: 0
Solved Threads: 0
Newbie Poster
Well. Thats a fine way I didn't knew before.
Are there any possibilities to deactive or hide the "minimize" and the "downsize" Button?
Thanks in advance
Greetings from Germany
Ben
Are there any possibilities to deactive or hide the "minimize" and the "downsize" Button?
Thanks in advance
Greetings from Germany
Ben
•
•
Join Date: Nov 2004
Location: Netherlands
Posts: 5,752
Reputation:
Rep Power: 18
Solved Threads: 199
I'd guess that the JavaDoc for JFrame will tell you...
•
•
Join Date: Dec 2004
Posts: 4
Reputation:
Rep Power: 0
Solved Threads: 0
Newbie Poster
Hmmm. I think 99 percent of the questions in this forum will be solved by reading the docs.......
Why are you here then?
Why are you here then?
•
•
Join Date: Nov 2004
Location: Netherlands
Posts: 5,752
Reputation:
Rep Power: 18
Solved Threads: 199
If I can teach one person to learn to find their own answers I'll have helped one person...
If I regurgitate code for everyone who wants some I've helped noone as they'll still not know how to find their own answers and will forever (or more likely until they end up in the unemployment line) come here for more and more.
If I regurgitate code for everyone who wants some I've helped noone as they'll still not know how to find their own answers and will forever (or more likely until they end up in the unemployment line) come here for more and more.
|
•
•
•
•
•
•
•
•
DaniWeb Java Marketplace
•
•
•
•
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Linear Mode
- Previous Thread: How to load binary content of a .class file?
- Next Thread: How to make a thread never be terminated?
