Winter vacation 第三次课

Dog.java

父类1--Father1.java

public class Father1 {
 
    public void test(){
        System.out.println("Father1 test... ...");
    }
}

父类2--Father2.java

public class Father2 {
 
    public void test(){
        System.out.println("Father2 test... ...");
    }
}

子类--SubClassTest.java

public class SubClassTest extends Father1 {
 
    public static void main(String[] args) {
//        Father1 father1 = new Father1();
//        father1.test();
        SubClassTest sct = new SubClassTest();
        sct.test();
    }
}

PetClassTest.java

public class PetClassTest extends Pet {
 
    public static void main(String[] args) {
        PetClassTest pct = new PetClassTest();
        pct.print();
    }
}

Tiger.java