If you want to develop Java Aplications, goto Netbeans (or Eclipse, although IMHO has a stepper learning curve to know his API's and always wiil put that IDE look in your application). We've been using Netbeans platform (and this is the best, the IDE itself may be a platform to your application) as our harness for some years now and he proved effective on it. If you just want a tool (IDE) goto Jetbrains, they have a real eco system of development tools (Pycharm is a charm, Idea has a pletora of plugins and their MPS is awesome) by a quite reasonable price to use. To be fair, Eclipse again shines, is robust.