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I have attempted to fix this problem using the various forums on this site, but nothing has helped. I tried similar techniques as used to fix other people's 1.8 errors, but nothing has worked. I have my java class file under my source folder and no imports, I just simply want a basic output message to make sure intelliJ is working as it should. Can anyone offer any advice?

Nick Mucci
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  • where is your code? Please add some code to understand the issue. – atp9 Mar 07 '17 at 14:13
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    Go to file -> settings -> Build Execution and Deployment -> Java -> Compiler Here change the compiler language level to 1.8 or lesser. – Srikanth Balaji Mar 07 '17 at 14:18
  • Did you check all the options in [this answer](http://stackoverflow.com/a/12900859/104891)? Are you sure it doesn't help? – CrazyCoder Mar 07 '17 at 19:19

2 Answers2

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Here change the language level to 1.8 or lesser. This changes the target release version.

Go to file -> settings -> Build Execution and Deployment -> Java -> Compiler

Here change the language level to 1.8 or lesser. This changes the source release version.

File -> Project Structure -> Module Settings -> Tab: Source: Language Level

and also here,

File -> Project Structure -> Project(In left pane) -> Project language level

neonidian
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Srikanth Balaji
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0

Just in case anyone stumbles onto the same problem and the above answer doesn't solve it, my issue was resolved doing the following (I was using Gradle):

  1. Open the your-project-name.ipr file.
  2. Verify the following line:

<bytecodeTargetLevel target="1.xx" />

Mine was set to 1.10. I changed it to 1.08 (which my project SDK was set to) and the problem was solved.

Danny Meyer-Kristensen
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