从配置文件中读取配置信息

import java.util.ResourceBundle;

// 从配置文件中获得配置信息
public class Configuration {
	private static Object lock = new Object();
	private static Configuration config = null;
	private static ResourceBundle rb = null;
	private static final String CONFIG_FILE = "dbconf";

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

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

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

其他地方使用它就可以：

private static String dburl = Configuration.getInstance().getValue("dburl");