面向对象面向过程

面向对象：把要完成的一件事，通过对象间的协作实现。
面向过程：把要完成的一件事，通过循序依次调用各个模块实现。
我把大象装进冰箱这件事为例，用面向对象和面向过程实现，都是用java代码完成。

1、面向对象

package bigDemo.ObjectOriented;

/**
 * 大象类
 * 
 * @Description
 * @author FuJianyong
 * 2015-7-1下午05:47:11
 */
public class Elephant {
 
	private String name;
   	
	public Elephant(String name){
		this.name = name;
	}
	
	public String getName() {
		return name;
	}

}

package bigDemo.ObjectOriented;

/**
 * 冰箱类
 * 
 * @Description
 * @author FuJianyong
 * 2015-7-1下午05:39:05
 */
public class IceBox {

	private String name;

	public void open(People people){
		System.out.println(people.getName() + "把" + this.name + "打开");
	}
	
	public void close(People people){
		System.out.println(people.getName() + "把" + this.name + "关闭");
	}
	
	public IceBox(String name) {
		this.name = name;
	}

	public String getName() {
		return name;
	}

}

package bigDemo.ObjectOriented;

/**
 * 人类
 * 
 * @Description
 * @author FuJianyong
 * 2015-7-1下午05:39:15
 */
public class People {
     
	private String name;

	/**
	 * 描述人的动作
	 */
	private String action;
	
	public void openIceBox(IceBox iceBox){
		iceBox.open(this);//this表示调用此方法的对象（当前对象）
	}
	
	public void pushElephant(Elephant elephant, IceBox iceBox){
		System.out.println(this.getName() + "把" + elephant.getName() + this.action + iceBox.getName());
	}
	
	public void closeIceBox(IceBox iceBox){
		iceBox.close(this);
	}
	
	public People(String name, String action){
		this.name = name;
		this.action = action;
	}
	
	public String getName() {
		return name;
	}
	
}

package bigDemo.ObjectOriented;

/**
 * 面向对象实现装大象进冰箱
 * 
 * @Description
 * @author FuJianyong
 * 2015-6-30上午10:14:26
 */
public class ObjectOriented {

	public static void main(String[] args) {
		
		final IceBox iceBox = new IceBox("冰箱");
		final Elephant elephant = new Elephant("大象");
		final People people = new People("小明", "推进");
		
        people.openIceBox(iceBox);
        people.pushElephant(elephant, iceBox);
        people.closeIceBox(iceBox);
	}
}

运行结果：
小明把冰箱打开
小明把大象推进冰箱
小明把冰箱关闭

如果测试类中的引入新的对象，people类新增一个方法，即可变成完成另外一件事。

package bigDemo.ObjectOriented;

/**
 * 牛奶类
 *
 * @author FuJianyong
 * 2015-7-2下午10:05:10
 */
public class Milk {
	
	private String name;
   	
	public Milk(String name){
		this.name = name;
	}
	
	public String getName() {
		return name;
	}

}

people类中加入一个方法

	
public void pushMilk(Milk milk, IceBox iceBox){
		System.out.println(this.getName() + "把" + milk.getName() + this.action + iceBox.getName());
	}

package bigDemo.ObjectOriented;

/**
 * 面向对象实现装大象进冰箱
 * 
 * @Description
 * @author FuJianyong
 * 2015-6-30上午10:14:26
 */
public class ObjectOriented {

	public static void main(String[] args) {
		
		final IceBox iceBox = new IceBox("冰箱");
		final Milk milk = new Milk("牛奶");
		final People people = new People("小白", "放进");
		
        people.openIceBox(iceBox);
        people.pushMilk(milk, iceBox);
        people.closeIceBox(iceBox);
	}
}

运行结果：
小白把冰箱打开
小白把牛奶放进冰箱
小白把冰箱关闭

2、面向过程

package bigDemo.ProcessOriented;

/**
 * 面向过程实现装大象进冰箱
 * @Description
 * @author FuJianyong
 * 2015-7-1下午05:08:47
 */
public class ProccessOriented {
	
	public void openIceBox(String people, String elephant, String iceBox){
		System.out.println(people + "打开冰箱");
		pushElephant(elephant, iceBox);
	}
	
	public void pushElephant(String elephant, String iceBox){
		System.out.println("装" + elephant + "进" + iceBox);
		closeIceBox(iceBox);
	}
	
	public void closeIceBox(String iceBox){
		System.out.println("关闭" + iceBox);
	}
	
	public static void main(String[] args) {
		 new ProccessOriented().openIceBox("小明", "大象", "冰箱");
	}
}

运行结果：
小明打开冰箱
装大象进冰箱
关闭冰箱