Question

审议以下法典:

class abstract Normal1 extends Something 
{
}

class Outer 
{
  class abstract Inner extends Normal1
  {

  }
}

class General extends Outer.Inner  // Problem occurs at this 
{
}

我所看到的错误是“由于某些中间建筑商的雇用,无法提供PerfHelper型的披露”。

我的问题是,我能否扩大上述内部阶层?

Answer 1

宣布内产阶级为static,并允许延长:

class outer {
  static abstract class inner extends normal1 { }
}

如果内心不是抽象的,它就与外部联系在一起,只有在存在外事的情况下才能存在。检查一下这是否真的想要。

Answer 2

Nest类同(在意义上) 某类财产。

As in case of instance variable it only when available when its object is created as same as inner class also available when outer s object will created.

So if you want to extend this then make your inner class as static inner class
As jordao suggest above

Answer 3

Try this, (Read nested category inheritance Rules。

abstract class normal1 extends something { }

class outer
{
  abstract class  inner extends normal1{}
}

class Outer1 extends outer
{
  class General extends inner {}
}

Answer 4

在您的班子里,总经理修改其建筑设计,叫上超级内层建筑商。这里是法典。

public General(){
    new outer().super();
}

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