有一个水果箱（Box），箱子里装有水果（Fruit），每一种水果都有不同的重量和颜色，水果有：苹果，梨，橘子。每个苹果（Apple）都有不同的重量和颜色，每个橘子（Orange)有不同的重量和颜色，每

import java.util.ArrayList;  public class Box { 	ArrayList<Fruit> flist = new ArrayList<Fruit>(); 	//添加水果方法 	public void addFruit(Fruit fruit) { 		flist.add(fruit); 		 	} 	//取出水果方法 	public void  getFruit(Fruit fruit) { 		flist.remove(fruit); 		 	} 	//显示 	public void show() { 		for(Fruit fruit : flist) { 			System.out.println(fruit); 		} 	} 		 	public static void main(String[] args) { 		Fruit f1 = new Apple("apple","red",3); 		Fruit f2 = new Pear("pear","blue",6); 		Fruit f3 = new Orange("orange","yellow",8); 	 		Box b = new Box(); 		b.addFruit(f1); 		b.addFruit(f2); 		b.addFruit(f3); 		System.out.println("显示水果:..............."); 		b.show(); 		b.getFruit(f3); 		System.out.println("取出水果后：............"); 		b.show(); 	} 	 }

public class Fruit { 	private String name; 	private String color; 	private int weight; 	//set get方法 	public String getColor() { 		return color; 	} 	public String getName() { 		return name; 	} 	public void setName(String name) { 		this.name = name; 	} 	public void setColor(String color) { 		this.color = color; 	} 	public int getWeight() { 		return weight; 	} 	public void setWeight(int weight) { 		this.weight = weight; 	} 	 	//构造方法 	public Fruit() {} 	public Fruit(String name,String color,int weight) { 		this.name=name; 		this.color = color; 		this.weight = weight; 	} 	//重写 	public String toString() { 		 		return getName()+"  "+getWeight()+"  "+getColor(); 	} }

public class Apple extends Fruit { 	public Apple(String name,String color,int weight) { 		super(name,color,weight); 	} 	 }

public class Pear extends Fruit{  	public Pear(String name,String color,int weight) { 		super(name,color,weight); 		 	} }

public class Orange extends Fruit { 	public Orange(String name,String color,int weight) { 		super(name,color,weight); 		 	} }

文章来源: 有一个水果箱（Box），箱子里装有水果（Fruit），每一种水果都有不同的重量和颜色，水果有：苹果，梨，橘子。每个苹果（Apple）都有不同的重量和颜色，每个橘子（Orange)有不同的重量和颜色，每

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