Eclipse: The specified JRE installation does not exist

Question

I used to have Eclipse configured well and work fine before. But I just uninstalled it and installed Eclipse Juno again on my Mac OS 10.10 today. But I kept getting this err

Answer 1

Main Cause of this Error is You Maybe forgot the set Build patch. When you Import Old Project this time Old Java Build Patch Existing You Have to give New One which one you currently using in your work space.

Process:- Right Click Project -> Build patch -> Configure Build path-> Add Library-> System Library-> Set JRE (Default or Alternative)