android - Updating Java and JRE are causing many errors in Eclipse -

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i'm using eclipse program android applications, , when opened program yesterday, popped error saying need install jre - i've downloaded jre , installed - when during installation got message saying java version have on computer (version 7) old jre (version 8), , need update java also. did so, , opened eclipse again - , of projects,that before worked great, full errors. tried installing of sdk updates - didn't work, tried uninstalling eclipse , re-install - didn't work.

the errors are: "xxx cannot resolved type" - in amost every single line in project.

how fix it?? thank you!!

android development tool(adt) install.. , update sdk , import old program.. ithink work.


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