overriding.java

effective-java中文英文版,大师人物写的

// Overriding example - Page 129

class A {
    String name() { return "A"; }
}

class B extends A {
    String name() { return "B"; }
}

class C extends A {
    String name() { return "C"; }
}

public class Overriding {
    public static void main(String[] args) {
        A[] tests = new A[] { new A(), new B(), new C() };

        for (int i = 0; i < tests.length; i++)
            System.out.print(tests[i].name());
    }
}