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【错误解决】Constructs a InvocationTargetEXception with a target exception

错误解决 
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调试程序，遇到：Constructs a InvocationTargetEXception with a target exception

 

在 java.lang.reflect包中的InvocationTargetException.java类中的InvocationTargetException；

 

解释说是系统在创建一个类，在构造函数中就出错；

 

发现：除了构造函数，创建类的实例出错都会报这个错误；

如有一个成员变量：在定义的时候直接new出来，结果有Exception，也报这个错误

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