Search:

Add println statements that print messages when they are executed. That will show you where the code is executing. For example:
System.out.println("at start of loop1");
.... ...

Where is the code executing? Add some println() statements to show where the code is executing.

Can you explain? Are there error messages? Copy the full text and post it here.
Is the output wrong? Copy the output, paste it here and add comments describing what you want it to be.