抽象方法、抽象类

 

 

 练习

java">package day10.抽象类和抽象方法;public  abstract class animals {private String name;private int age;public animals(){}public animals(String name,int age){this.name=name;this.age=age;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public abstract void eat(String something);public void drink(){System.out.println("喝水");}
}

java">package day10.抽象类和抽象方法;public class frog extends animals {public frog(){}public frog(String name,int age){super(name,age);}@Overridepublic void eat(String something) {System.out.print("青蛙吃"+something);}
}

java">package day10.抽象类和抽象方法;public class dog extends animals{public dog(){}public dog(String name,int age){super(name,age);}@Overridepublic void eat(String something){System.out.print("狗吃"+something);}
}

 

 

java">package day10.抽象类和抽象方法;public class sheep extends animals{public sheep(){}public sheep(String name,int age){super(name,age);}@Overridepublic void eat(String something){System.out.print("山羊吃"+something);}
}

java">package day10.抽象类和抽象方法;public class test {public static void main(String[] args) {frog f=new frog("小青",1);dog d=new dog("小黄",3);sheep s=new sheep("喜羊羊",12);f.eat("虫子");f.drink();d.eat("骨头");d.drink();s.eat("青草");s.drink();}
}

 

 小结