Access outer anonymous class from inner anonymous class

Question

I\'m just curious. Is there a way to access parent in anonymous class that is inside another anonymous class?

I make this example create a JTable subclass

Answer 1

I think the code below will do what is technically being asked. That said, I wouldn't recommend going this route when simpler options are available.

I'm sure you will want your run method to do something more interesting than print "Hello World!" in an infinite loop, but this seemed ok for a proof-of-concept.

package test;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import javax.swing.JTable;
import javax.swing.SwingUtilities;

public class GetOuterAnonymousClass {

    public static void main(String args []){

        JTable table = new JTable(){

            @Override
            public void changeSelection(
                final int row, final int column,
                final boolean toggle, final boolean extend) {
                Runnable runnable = new Runnable() {
                    private Object caller;
                    public void setCaller(Object caller){
                        this.caller = caller;
                    }

                    @Override
                    public void run() {
                        System.out.println("Hello World!");
                        try {
                            Class clazz = this.getClass().getEnclosingClass();
                            Method method = clazz.getDeclaredMethod("changeSelection", new Class[]{Integer.TYPE, Integer.TYPE, Boolean.TYPE, Boolean.TYPE});
                            method.invoke(caller, 1, 1, true, true);
                        } catch (SecurityException e) {
                            e.printStackTrace();
                        } catch (NoSuchMethodException e) {
                            e.printStackTrace();
                        } catch (IllegalArgumentException e) {
                            e.printStackTrace();
                        } catch (IllegalAccessException e) {
                            e.printStackTrace();
                        } catch (InvocationTargetException e) {
                            e.printStackTrace();
                        }
                    }
                };
                Method method;
                try {
                    method = runnable.getClass().getDeclaredMethod("setCaller", new Class[]{Object.class});
                    method.invoke(runnable, this);
                } catch (SecurityException e1) {
                    e1.printStackTrace();
                } catch (NoSuchMethodException e1) {
                    e1.printStackTrace();
                } catch (IllegalArgumentException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                } catch (InvocationTargetException e) {
                    e.printStackTrace();
                }
                SwingUtilities.invokeLater(runnable);
            }
        };
        table.changeSelection(1, 1, true, true);

    }

}