java - AppCompatActivity crashing the app in Eclipse -

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i'm creating app in eclipse , want use appcompat library in project. have imported library , working fine when extends activity appcompatactivity. problem is, when run app , application launch activity extended appcompactivty. app crashes. log cat showing noclassdeffounderror: please guide me in right way. thanks

noclassdeffounderror occurs when source compiled, @ runtime, required class files not found. may can happen in distribution or production of jar files.

my advise : clean , rebuild project .if not works use android studio instead of eclipse .

android actionbar how add supporting library v7 appcompat eclipse


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