面向对象第4章

最新推荐文章于 2022-11-04 21:58:21 发布

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最新推荐文章于 2022-11-04 21:58:21 发布 · 400 阅读

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本文展示了如何使用Java进行面向对象编程，设计了Animal抽象类及其子类Bird和Fish，实现了print()方法，分别描述了鸟类和鱼类的特性。同时，给出了Test类用于测试这些类的实例化和方法调用。

设计BRID、FISH类，都继承自抽象类Animal,实现其抽象方法info(),并输出

package com.bdqn.zuoye05;

public abstract class Animal {
		private String name;
		private int 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 Animal(String name, int age) {
			super();
			this.name = name;
			this.age = age;
		}
		public abstract void print() ;
			
			
		
}
package com.bdqn.zuoye05;

public class Bird extends Animal{
		public Bird(String name, int age , int weight) {
		super(name, age);
		this.weight = weight;
		// TODO Auto-generated constructor stub
	}

		private int weight;

		public int getWeight() {
			return weight;
		}

		public void setWeight(int weight) {
			this.weight = weight;
		}

		@Override
		public void print() {
			// TODO Auto-generated method stub
			System.out.println("我是一只"+this.weight+"的" +
					thi