实例 Java 内部类

x
 
class OuterClass {
  int x = 10;
  class InnerClass {
    int y = 5;
  }
}
public class Main {
  public static void main(String[] args) {
    OuterClass myOuter = new OuterClass();
    OuterClass.InnerClass myInner = myOuter.new InnerClass();
    System.out.println(myInner.y + myOuter.x);
  }
}
                    

输出结果

15