Refer :http://www.cnblogs.com/mengfanrong/p/3745475.html
Righ click on your project > properties > Java compiler > enable "project specific settings" Set Compiler compliance level to 1.6 re Build your project
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Refer :http://www.cnblogs.com/mengfanrong/p/3745475.html
Righ click on your project > properties > Java compiler > enable "project specific settings" Set Compiler compliance level to 1.6 re Build your project
相关文章：