Access outer class "super" from inner class in Java

Question

How can I access outer class' super from an inner class?

I'm overriding a method to make it run on a different thread. From an inline Thread, I need to call the original method but of course just calling method() would turn into an infinite recursion.

Specifically, I'm extending BufferedReader:

public WaitingBufferedReader(InputStreamReader in, long waitingTime) {     [..]     @Override     public String readLine()     {         Thread t= new Thread(){             public void run()             {                 try { setMessage(WaitingBufferedReader.super.readLine()); } catch (IOException ex) { }             }          };            t.start();           [..]     } } 

This somewhere gives me a NullPointerException I'm not able to find.

Thanks.

Answer 1

Like this:

class Outer {     class Inner {         void myMethod() {             // This will print "Blah", from the Outer class' toString() method             System.out.println(Outer.this.toString());              // This will call Object.toString() on the Outer class' instance             // That's probably what you need             System.out.println(Outer.super.toString());         }     }      @Override     public String toString() {         return "Blah";     }      public static void main(String[] args) {         new Outer().new Inner().myMethod();     } } 

The above test, when executed, displays:

Blah Outer@1e5e2c3