如何用java写一个动物的抽象类，包含重量，年龄等属性，以及移动，捕食方法。

JAVA创建一个抽象类,动物类Animal,包括私有字段年龄age。~

Animal a = new Bird();
有这种形式

package com.animaltest;public class Animal {private String name;private int age;public Animal(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 void outPut(){System.out.println("name:"+this.getName());System.out.println("age:"+this.getAge());}}package com.animaltest;public interface Eattable {void beatted();}package com.animaltest;public class Bird extends Animal{private String wing;private String flyDistance;public Bird(String name, int age) {super(name, age);this.wing = wing;this.flyDistance = flyDistance;}public String getWing() {return wing;}public void setWing(String wing) {this.wing = wing;}public String getFlyDistance() {return flyDistance;}public void setFlyDistance(String flyDistance) {this.flyDistance = flyDistance;}@Overridepublic void outPut() {super.outPut();System.out.println("wing:"+this.getWing());System.out.println("flyDistance:"+this.getFlyDistance());}}package com.animaltest;public class Beast extends Animal implements Eattable{private String localPlace;private String food;public Beast(String name, int age) {super(name, age);this.localPlace = localPlace;this.food = food;}public String getLocalPlace() {return localPlace;}public void setLocalPlace(String localPlace) {this.localPlace = localPlace;}public String getFood() {return food;}public void setFood(String food) {this.food = food;}@Overridepublic void beatted() {System.out.println();}@Overridepublic void outPut() {super.outPut();System.out.println("localPlace:"+this.getLocalPlace());System.out.println("food:"+this.getFood());}}

{
private String msg="";
public void setMsg(String msg){ this.msg=msg; }
void fly()
{
System.out.println(this.msg);
}

}
//test class

public void main(String[] args)
{
animal a=new animal();
a.name = "哈哈";
a.age = 12;
a.color = "red";
System.out.println(a);
//++++++
bird daYan = new bird();
daYan.name = "大雁"
daYan.setMsg(“一会排成个一字，一会排成个人字”);
daYan.fly();

bird ji = new bird();
ji.name = "鸡"；
ji.setMsg(“md老子不会飞”);
ji.fly();

//++++++++
}

---

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肃北蒙古族自治县19657386328： JAVA创建一个抽象类,动物类Animal,包括私有字段年龄age. - ？
戊疫治咳： Animal a = new Bird();有这种形式

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