log.java

利用Java开发的一个聊天程序

package myQQ;

import org.apache.log4j.*;

public class Log {
	
	private static Logger logger;

	
	private Log(){}
	
	public static Logger getLogger(){
		if(logger==null){
			PropertyConfigurator.configure("config.properties");
			return Logger.getLogger("fileTransferLog");			
		}
		else{
			return logger;
		}
	}
	
	public void info(String infoStr){
		logger.info(infoStr);
	}
	
	public void warm(String warnStr){
		logger.warn(warnStr);
	}
	
	public void debug(String debugStr){
		logger.debug(debugStr);
	}
	
	public void error(String errorStr){
		logger.error(errorStr);
	}
	
	
	

}