设计模式笔记——Prototype

Java 里面实现Prototype

使用Cloneable接口

package prototype.pattern;

import java.util.Date;

/**
 * 
 * @author Real H LI
 *
 */
public class Prototype implements Cloneable {

	private Date date;
	private String dateStr;
	private String ID;
	
	public Prototype(){
		this.date=new Date();
		this.dateStr=date.toString();
		setID("YYYYYYY");
	}
	
	@Override
	protected Object clone() throws CloneNotSupportedException {
		// TODO Auto-generated method stub
		try {
			return this.getClass().newInstance();
		} catch (IllegalAccessException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return null;
		} catch (InstantiationException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return null;
		}
	}

	public String getDateStr() {
		return dateStr;
	}

	public void setID(String iD) {
		ID = iD;
	}

	public String getID() {
		return ID;
	}
	
	

}

package prototype.pattern;
/**
 * 
 * @author Real H LI
 *
 */
public class PrototypePattern {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		Prototype prototype = new Prototype();
		System.out.println(prototype.getDateStr());

		System.out.println("-------------------------------");
		Prototype temp;
		try {
			for (int i = 0; i < 10; i++) {
				temp = (Prototype) prototype.clone();
				System.out.println(temp.getDateStr());
				temp.setID(String.valueOf(i));
			}
		} catch (CloneNotSupportedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		System.out.println("-------------------------------");
		System.out.println(prototype.getID());
		
	}

}