Why so red? IntelliJ seems to think every declaration/method cannot be found/resolved

Question

I just installed and re-installed IntelliJ. Every Java file is coming up RED. I checked the JDK; it is at 1.6.##. The maven clean install build worked just fine

Answer 1

I had the same problem and after trying all of the above suggestions, it turned out that my IntelliJ installation had not picked up my JAVA_HOME system variable, and it had no SDK/JDK set.

I fixed it by following these instructions: Configuring Global, Project and Module SDKs