The method isEmpty() is undefined for the type String/String类型的isEmpty报错

原因是：JDK版本问题，JDK1.5中的String 类型变量没有isEmpty方法，而JDK1.6中有这个方法，所以只要把你的JDK版本改成1.6的应该没问题。

转载于:https://blog.51cto.com/zhoujiyu/135369

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The method isEmpty() is undefined for the type String/String类型的isEmpty报错

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