test44.java~

来自「SCJP认证考试资料」· JAVA~ 代码 · 共 21 行

interface Inter{
}
class First implements Inter {
    public Inter method1() {
	System.out.println("Super");
	return new First();
    }
}
class Second extends First {
    public First method1() {
	System.out.println("sub");
	return new Second();
    }
}
class Test44 {
    public static void main(String[] args) {
	First first = new Second();
	Inter first1 = first.method1();
    }
}