简单类的继承（二）

package collection;

class Father {
    public Father() {
        System.out.println("Father");
    }

    public void test() {
        System.out.println("Father test");
    }
}

class Son extends Father {
    public Son() {
        super();
        System.out.println("Son");
    }

    public void test() {
        System.out.println("Son test ");
    }
}

public class MyExtends {
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Son son = new Son(); // 此时打印出
        son.test();
        /*
         * Father
         * Son
         * Son test
         */

        Father father = new Father(); // 此时打印出
        father.test();
        /*
         * Father
         * Father test
         */

        Father father2 = new Son();
        father2.test();

        /*
         * Father
         * Son
         * Son test
         */
    }

}