Why is my Java App Lagging or Crashing After Using OSXAdapter with Jar Bundler?

JAR Bundler Using OSXAdapter Causing Application to Lag or Terminate

This question is related to an issue encountered when using OSXAdapter in a Java application packaged into an APP using Apple's Jar Bundler. The issue arose after modifying the Controller class to use OSXAdapter, resulting in the application either lagging or terminating abruptly.

Possible Cause and Suggestions

The solution suggests that the application's performance issues might be caused by blocking the event dispatch thread (EDT) during the time-consuming tasks. Instead, the suggestion is to use SwingWorker or another asynchronous mechanism to perform the tasks without blocking the UI thread.

The solution also recommends considering the SwingWorker API, which can automatically update the model on the EDT, or using invokeLater() to manually update the UI from another thread. Synchronizing the application correctly is crucial for smooth functioning and proper handling of Apple events.

Alternative Approaches and Resources

The solution suggests that using OSXAdapter or Jar Bundler might not be necessary in this case. It recommends exploring other approaches for Mac OS application development, such as:

• MVC architecture
• Building the application bundle without using Jar Bundler
• Alternative approaches discussed in the provided links

Additional Considerations

• Checking if the application is running on the event dispatch thread using isDispatchThread() is advised.
• For a more complete example of MVC architecture, the solution refers to another project with a .dmg that includes a Mac application and a build process.

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