问题:

This is not straight forward question. In my case the outer class variable and the inner class setter method's argument name is same. like:

class Problem {
    String s;
    int p;
    class Inner {
        String testMethod() {
         return  s = "Set from Inner";
        }
        void setP(int p)
        {
            p=p;  //it will do self assignment
        }
    }


}

now I cant initialize outer class instance variable p with this.p=p as it indicates the inner class. again I cannot do Problem.p=p; it gets an error. Now how can I assign outer p, keeping the inner Class method setP(int p)'s argument the same name p ?

回答1:

This is how you can/should do it:

Problem.this.p

回答2:

Use to refere p to Outer class like

Problem.this.p = p;

回答3:

use this

class Problem {
String s;
int p;
class Inner {
    String testMethod() {
     return  s = "Set from Inner";
    }
    void setP(int p)
    {
        Problem.this.p=p;  //it will do assignment
    }
  }
}

回答4:

class Problem {
String s;
int p;
class Inner {
    String testMethod() {
     return  s = "Set from Inner";
    }
    void setP(int p)
    {
        Problem.this.p=p;  //it will do assignment to p of outer class
    }
}
}