Monitor File using java

import java.io.*;
public class LogMonitor
{
public static void main(String[] args) throws Exception
{
FileReader fr = new FileReader("D:/test.txt");
BufferedReader br = new BufferedReader(fr);
while (true)
{
String line = br.readLine();
if (line == null)
{
Thread.sleep(1*1000);
}
else
{
byte[] y = line.getBytes();
File g = new File("D:/abc.txt");
OutputStream f = new FileOutputStream(g);
f.write( y );
}
}
}
}