java编程思想第四版习题_10.21

interface InterFace1 {
    void g();

    public class InnerClass1 {
        public static void f(InterFace1 a) {
            a.g();
        }

    }
}

public class InnerClassTest implements InterFace1 {
    public void g() {
        System.out.println("g()");
    }

    public static void main(String[] args) {
        InnerClassTest a = new InnerClassTest();
        InnerClass1.f(a);
    }
}
           

输出：g()