java学习之旅48--面向对象_21_抽象类_抽象方法

抽象类和抽象方法

Animal.java
public abstract class Animal2 {
public abstract void run();
}

Cat.java
public class Cat2 extends Animal2{
@Override
public void run() {
System.out.println("猫步");
}
}

Dog.java
public class Dog2 extends Animal2{
@Override
public void run() {
System.out.println("狗步");
}
}