Having many projects open the same time, and working on them in parallel is a challenge. Ok, the human brain is not built for multitasking, but I still try ;-). What I typically I end up in my Eclipse Problems View to have entries from multiple projects mixed up:
How to show it that I can fix the problems for ony project only, and not showing all problems from all projects?
The Eclipse Problems view only shows the problems of (all) open projects. An easy way is to close the other projects using the (context) menu Project > Close Project:
But then I need to re-open that project later again, which will take time. So while this works, but this is not ideal.
Show Error/Warnings on Project
A better way in my view is to use this: There is an option in the Problems view to just show the messages for the currently active/selected project:
With this, only the messages for the currently active project are shown:
The Problems View has filtering and configuration capabilities which are easily overlooked. But knowing it and configuring the Problems view for my needs helped me to get more productive.
Happy Problem Solving :-)