Compare the last modified times for two files Filelistener

ImportJava.io.File;ImportJava.text.SimpleDateFormat;ImportJava.util.Timer;ImportJava.util.TimerTask; Public classFilelistener { Public Static voidMain (string[] args) {Filelistener Filelistener=NewFilelistener (); Filelistener.timer=NewTimer (true);    Filelistener.start (); }    PrivateTimer timer; Private LongCurrentTime =-1; Private LongLastmodifiedtime =-1; Private LongTimes = 1; Private LongPollingInterval = 1000 *Times ; PrivateString FilePath = "C:\\Test.txt";  PublicFilelistener () {File file=NewFile (FilePath); Lastmodifiedtime=file.lastmodified (); CurrentTime=Lastmodifiedtime; }     Public voidstart () {Timer.schedule (NewFileMonitor (), 0, PollingInterval);  while(true) {            Try {                intCH =System.in.read (); System.out.println ("Ch=" +ch); if(CH-' c ' = = 0) {System.out.println ("Quit");                    Timer.cancel ();  Break; }            } Catch(Exception e) {e.printstacktrace (); }        }    }    Private classFileMonitorextendsTimerTask { Public voidRun () {File file=NewFile (FilePath); Lastmodifiedtime= File.exists ()? File.lastmodified ():-1; if(CurrentTime! = lastmodifiedtime) {//1439540671443String string =NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss SSS"). Format (lastmodifiedtime);//1439540994156System.out.println ("File changed at:" +string); CurrentTime=Lastmodifiedtime; }        }    }}

Compare the last modified times for two files Filelistener