Creating instances of inner classes : Nested Classes « Class Definition « Java Tutorial

1. Java Tutorial
2. Class Definition
3. Nested Classes

public class MainClass {
  class A {
    private int i = 11;

    public int value() {
      return i;
    }
  }

  class B {
    private String label;

    B(String whereTo) {
      label = whereTo;
    }

    String readLabel() {
      return label;
    }
  }

  public static void main(String[] args) {
    MainClass p = new MainClass();
    // Must use instance of outer class
    // to create an instances of the inner class:
    MainClass.A c = p.new A();
    MainClass.B d = p.new B("A");
  }
}