useaaa.java

所学课程的编码。java的基础例子。可以练习java通过这些例子。。

/* David Java File
 *  test inner classes
 */
package chap05;

class Aaa {
    int outI = 10;

    class InnerClass {
        int inI = 20;
    }
}

class InheritanceInner extends Aaa.InnerClass{
    //InheritanceInner(){}; // compile error
    int inI=30;
    InheritanceInner(Aaa a){
        a.super();
        
    }
}


public class UseAaa {
    public static void main(String[] args) {
        Aaa a = new Aaa();
        Aaa.InnerClass ic = a.new InnerClass();
        System.out.println(a.outI);
        
        InheritanceInner ihi = new InheritanceInner(a);
        System.out.println(ihi.inI);
    }

}