构造默认构造函数时不能处理异常：type由隐式超构造函数抛出的异常 [英] While constructing the default constructor can not handle exception : type Exception thrown by implicit super constructor

问题描述

代码工作正常，直到我尝试将代码编译成可构造的类。当我尝试从它构造一个对象时，我得到错误

The code works fine until I try to make the code into a constructable class. When I attempt to construct an object from it I get the error

默认构造函数不能处理由隐式超构造函数抛出的异常类型IOException。定义一个显式构造函数

"Default constructor cannot handle exception type IOException thrown by implicit super constructor. Must define an explicit constructor"

这是当必须抛出异常到 FileReader 和 BufferedReader 。

This is when having to throw exceptions to FileReader and BufferedReader.

谢谢

编辑： / p>

FileReader textFilethree = new FileReader (xFile);
BufferedReader bufferedTextthree = new BufferedReader (textFilethree) ;
String lineThree = bufferedTextthree.readLine();

xFile从构建中获取。注意，在这个构造中，异常被抛出。

The xFile is gotten from the construction. Note that within this construction exceptions are thrown.

推荐答案

默认构造函数隐式调用超级构造函数，它被假定为抛出一些异常，需要在子类的构造函数中处理。对于详细的答案发布代码

Default constructor implicitly invokes super constructor which is assumed to be throwing some exception which you need to handle in sub class's constructor . for detailed answer post the code

class Base{

  public Base() throw SomeException{
    //some code
  }

}

class Child extends Base{
  public Child(){
   //here it implicitly invokes `Base()`, So handle it here
  }
}

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