Common Issues in Debugger

Debugger keeps popping up with following stack trace

ThreadExpiringThreadPool(ThreadPoolExecutor).runWorker(ThreadPoolExecutor$Worker) line: not available
ThreadPoolExecutor$Worker.run() line: not available
Thread.run() line: not available  

Solution

Configuring the behavior of Eclipse is straightforward:

Go to Window > Preferences > Java > Debug and uncheck Suspend execution on uncaught exceptions.

Source and Reference

http://stackoverflow.com/questions/6290470/eclipse-debugger-always-blocks-on-threadpoolexecutor-without-any-obvious-excepti 

Debugger doesn’t work

 

All threads not started hence debugging wont work.

Solution

Increase max heap size ie -Xmx param.