第一题：设计Bird，Fish类，都继承自抽象类Animal，实现其抽象方法info（），并输出它们的信息，参考运行结构如图，要求画出类图。
package WeekDemo;
public abstract class Animal {
int age; //共同属性年龄
public Animal(int age) {
super();
this.age = age;
}
public abstract void info();
}
package WeekDemo;
public class Bird extends Animal {
String color;
public Bird(int age, String color) {
super(age);
this.color = color;
}
public void info() {
System.out.println("我是一只" + color + "的鸟!\n今年" + super.age + "岁了!");
}
}
package WeekDemo;
public class Fish extends Animal {
int weight;
public Fish(int age, int weight) {
super(age);
this.weight = weight;
}
public void info() {
System.out.println("我是一只" + weight + "斤重的魚!\n今年" + super.age + "岁了!");
}
}
package WeekDemo;
public class Test11 {
public static void main(String[] args) {
Bird bird = new Bird(4,"紅色");
bird.info();
Fish fish = new Fish(2, 5);
fish.info();
}
} //测试类
第二题：兜兜家养了两只家禽：一只鸡和一只鸭。请用面向对象思想的封装，继承的特征进行描述。
package WeekDemo;
public abstract class Poultry {
private String name; //共同属性名字
private String hobby; //共同属性爱好
private String action; //共同属性行为
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getHobby() {
return hobby;
}
public void setHobby(String hobby) {
this.hobby = hobby;
}
public String getAction() {
return action;
}
public void setAction(String action) {
this.action = action;
}
}
package WeekDemo;
public class Chicken extends Poultry {
public void print() {
super.setName("喔喔");
System.out.println("我叫"+super.getName()+"是一只芦花鸡！");
super.setHobby("吃虫子!");
System.out.println("我喜欢"+super.getHobby());
super.setAction("打鸣!");
System.out.println("我会"+super.getAction());
}
}
package WeekDemo;
public class Duck extends Poultry {
public void print() {
super.setName("嘎嘎");
System.out.println("我叫"+super.getName()+"是一只斑嘴鸭！");
super.setHobby("吃小鱼虾!");
System.out.println("我喜欢"+super.getHobby());
super.setAction("游泳!");
System.out.println("我会"+super.getAction());
}
}
package WeekDemo;
public class Test2 {
public static void main(String[] args) {
Chicken show = new Chicken();
show.print();
System.out.println();
Duck show1 = new Duck();
show1.print();
}
} //测试类