程序即时读取日志文件

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

/**
 * 程序即时读取日志文件
 * @author RuiLin.Xie - xKF24276
 *
 */
public class LogView extends Thread
{

        public static void main(String[] args)
        {
                new LogView().start();
        }
        
        public void run()
        {
                //得到日志文件
                FileInputStream in = null;
                try
                {
                        in = new FileInputStream("tomcat/logs/localhost_log.2010-07-19.txt");
                }
                catch (FileNotFoundException e)
                {
                        e.printStackTrace();
                }
                
                byte[] b = new byte[1];
                
                try
                {
                        //永远试读文件是否有新数据
                        while(true)
                        {
                                //如果文件增加数据,则打印数据
                                while((in.read(b)) > 0)
                                {
                                        String msg = new String(b);
                                        System.out.print(msg);
                                }
                        }
                }
                catch (IOException e)
                {
                        e.printStackTrace();
                }
        }
}