JAVA面向物件練習05第三種
阿新 • • 發佈:2019-02-19
食物類,動物類,飼養員類,測試類。實現飼養員給動物餵食物。
食物類: 屬性name
動物類: 屬性name 方法void eat
飼養員類: 屬性name 方法void feed
測試類列印的結果:
張三喂大熊貓
大熊貓吃竹筍
package demo03;
public class Animal {
public String name;
public Food f;
public void eat(){
System.out.println(name+"吃"+f.name);
}
}
========================================================
package demo03;
public class Feeder {
public String name;
public Animal a;
public void feed(){
System.out.println(name+"喂"+a.name);
}
}
========================================================
package demo03;
public class Food {
public String name;
}
========================================================
package demo03;
public class Test {
public static void main(String[] args) {
Food f = new Food();
f.name = "竹筍";
Animal a = new Animal();
a.name = "大熊貓";
a.f = f;
Feeder fer = new Feeder();
fer.name = "張三";
fer.a = a;
fer.feed();
a.eat();
}
}