[xdude]

I guess the term Best depends on which language and how much work you done in the editor. These days I have been teaching my self Python. After testing several Python IDEs, I found out Sublime Text 3 is the best suited one for me. That's because I have yet to had a problem since I have started testing it. Smaller in side and doesn't take much resources ether. Since you use Java there are many. NetBeans is probably the most popular But I kinda felt like it's bit slow. But again I used Java long long time ago so Netbeans must have improved a lot.