提取classes中properties的value（JAVA）

 图例

package com.xxx.util;

import java.util.ResourceBundle;

/**
 * @author yi.y
 * 
 */
public class ConfigUtil {

	private static Object lock = new Object();
	private static ConfigUtil config = null;
	private static ResourceBundle rb = null;


	private ConfigUtil(String CONFIG_FILE) {
		rb = ResourceBundle.getBundle(CONFIG_FILE);
	}

	public static ConfigUtil getInstance(String CONFIG_FILE) {
		synchronized (lock) {
			if (null == config) {
				config = new ConfigUtil(CONFIG_FILE);
			}
		}
		return (config);
	}

	public String getValue(String key) {
		return (rb.getString(key));
	}

	public static void main(String[] args) {
		String proName="a";//配置文件的名称（不需要后缀）
		ConfigUtil instance = ConfigUtil.getInstance(proName);
		String value = instance.getValue("test");//getValue中需要填写properties中的key
		System.out.println(value);
	}
}