cacheimpl.java

本软件使用Java语言提供的JavaMail包进行开发

package com.lanx.app.mail;

import java.util.HashMap;
import java.util.Map;

/**
 * <p>此cache实现类是一个单例类</p>
 * 
 * @author Ramboo Lan
 * @version 1.0
 * @Date: 2008-12-10
 * */
public class CacheImpl implements Cache{
	private static CacheImpl cache = null;
	
	private Map<Object, Object> hashMap = new HashMap<Object, Object>();
	
	private CacheImpl() {		
	}
	
	public static CacheImpl newInstance() {
		if(cache == null)
			cache =  new CacheImpl();
		return cache;
	}
	
	public Object get(int index) {
		return hashMap.get(index);
	}
	
	public Object get(Object key) {
		return hashMap.get(key);
	}
	
	public void add(Object key,Object value){
		hashMap.put(key, value);
	}
	
	public void addAll(Map<Object, Object> map){
		hashMap.putAll(map);
	}
	
	public boolean containsKey(Object key){
		return hashMap.containsKey(key);
	}

	public Object remove(Object key){
		return hashMap.remove(key);
	}
	
	public int size(){
		return hashMap.size();
	}
	
	public boolean isEmpty(){
		return hashMap.isEmpty();
	}
	
	public void destroy(){
		hashMap.clear();
		hashMap = null;
	}	
}