Eclipse Oxygen : Incompatible java versions

Question

I have just installed Eclipse Oxygen and created a JFrame project. While switching from source view to design view, i am getting \"incompatible java version error\".

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Answer 1

I just asked the same question on 5th of May and I found the answer myself. Yet MY QUESTION is marked as "duplicate" whereas you were the one to ask the same exact question 3 days after me. Yall must be so desperate to get points. -_- Incompatible Java versions. Eclipse running under 0

Answer 2

Windowbuilder currently does not work with Java 9 or 10. This is described in Eclipse bug 517291.

Running Eclipse with Java 8 seems to be the only way to run windowbuilder.