Instance « Development « Java Swing Q&A





1. Restrict multiple instances of an application in java    stackoverflow.com

I want to prevent multiple instances of application being launched in java. I know 2 methods for this:

  1. locking file
  2. locking socket
But which is one is more efficient and good to use? ...

2. unique data instances    coderanch.com

Maybe i'm missing something fundamental in my view of OO. I'll try to keep this simple.... I have a Swing app where I can open a number of panels/views. I have a User instance 'Harry' in a tree, I double-click to open a panel and pass in the instance. If I change an attribute of 'Harry' via a panel then I ...

3. Run a single instance of application at all the times    coderanch.com

If the user runs the main program twice, it would mean they are 2 different instances of VM unaware of each other.So it would always result in multiple instances of program running. May be you should store in a file/something indicating that the application is already running. If the user runs the app again, you might check against the file and ...

4. How to assure that one instance of Swing application running?    coderanch.com

I have a Swing application which is system tray iconizable. Sometime a user can miss it in system tray so makes an attempt to launch another copy. A correct behavior should be just restore a currently running version. I noticed some solution based on setting up a listener on some port and monitor already running instance. This solution doesn't look good, ...