decorator.java

java模式设计

package com.euse;
import java.util.*;

public class Decorator implements Work {
	private List otherWork = new ArrayList();
	private Work w ;
	
	public Decorator(Work w) {
		this.w = w;
		otherWork.add("Insert CirclePeg");
		otherWork.add("Insert RectanglePeg");
		otherWork.add("Insert TrianglePeg");
		}
		
	public void insert() {
			doSomethingElse();
			w.insert();		
		}
	
	public void doSomethingElse() {
		ListIterator li = otherWork.listIterator();
		while(li.hasNext())
			System.out.println("Decorator:::" + li.next());	
		}
	}