Java Nested Classes
import java.io.*; import java.util.*; public class fred { static class Outer { // This variable exists in the outer scope private int ferdie; private class Inner { // This variable exists in the inner scope private int dingle; public Inner(int d) { dingle = d; } public void report() { // The reference to the outer scope and then the inner. ferdie += 10; dingle += 10; System.out.println("Report: " + ferdie + " " + dingle); } } private Inner g1, g2, g3; public Outer() { ferdie = 10; g1 = new Inner(100); g2 = new Inner(200); g3 = new Inner(300); } public void report() { System.out.println("Report: " + ferdie); g1.report(); g2.report(); g3.report(); System.out.println("Report: " + ferdie); } } public static void main(String[] args) { Outer z = new Outer(); z.report(); } } // Note: This program can be translated to C++ only by passing each Inner object // a pointer to the Outer object.