Can’t fix Unsupported major.minor version 52.0 even after fixing compatibility

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I agree with chrylis: you believe you changed your project’s compliance settings but probably you didnt.

Right click on your project and:

  • Java / Build Path : Go to Libraries tab and ensure yourself that you are really using jre6
  • Java / Compiler : Ensure yourself that you have selected 1.6 compliance

By the way you can “tell” eclipse that jre8 is 1.6 compliance clicking on Window/Preferences/Java/Installed JREs/Execution Environment and selecting in the left panel, Execution Environments, JavaSE-1.6 and in the Compatible JRE’s panel, jre8

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