innerclassdemo.java

《Java核心技术应用开发》电子工业出版社书籍源代码

// Define an inner class within a for loop.
package sample;
class Outer {
  int outer_x = 100;
  void test() {
    for(int i=0; i<10; i++) {
      class Inner {
        void display() {
          System.out.println("display: outer_x = " + outer_x);
        }
      }
      Inner inner = new Inner();
      inner.display();
    }
  }
}

public class InnerClassDemo {
  public static void main(String args[]) {
    Outer outer = new Outer();
    outer.test();
  }
}