Java- RuntimeException- Uncompilable source code - Erroneous tree type

Question

I\'m new in Java also I\'m new in this website, so I\'m sorry if the error is obvious, but I got an error, that I dont know what it means, I have try everything to fix it.<

Answer 1

Have a look at the bug report here. It has the solution to your problem:

From the nbusers mailing list I got the following hint:

"workaround it by deselecting 'Compile On Save' in the project options".  

The answer pointed out by Mark in the comments also goes along the same line. Here is the link again: java.lang.RuntimeException: Uncompilable source code - what can cause this?