Thread: How can I continuously read a text file in java

Hi,

My java code reads data from a text file stored in google drive. I'm trying to figure out how to continuously read the file data and once there is a new line added, output the line automatically. I am trying it by using sleep thread, but it is not working. I am attaching my code below:

package remotedata;

import java.awt.*;
import java.net.*;
import java.io.*;

public class remotedataread extends Frame
{
public static void main(String[] args)
throws InterruptedException, IOException{

BufferedReader br = null;
TextArea FileText =
new TextArea(" Content of the File \'temp1.txt\' :");

try
{
URL url =
new URL("https://docs.google.com/uc?id=0B9MOgXFCss2iSWpicmVKSW9OOWM&export");

InputStream is = url.openStream();
br = new BufferedReader(new InputStreamReader(is));
/* String line = null;
while (true) {
line = br.readLine();
if (line == null) {
//wait until there is more of the file for us to read
Thread.sleep(1000);
}
else {
System.out.println(line);
}
}*/
}


catch (MalformedURLException e)
{
System.out.println("Bad URL");
}
catch (IOException e)
{
System.out.println("IO Error : "+e.getMessage());
}

FileText.setBackground(Color.white);
FileText.append(String.valueOf('\n'));

Frame f = new Frame("server data");
f.setSize(200,200);
f.add(FileText);
f.setVisible(true);

try
{
String s;
s=null;
boolean eof = false;
//while (true) {
s = br.readLine();
System.out.println("Time Temperature");
while( !eof )
{
FileText.append(s + String.valueOf('\n'));
try
{
//while (true) {
s = br.readLine();
if ( s == null )
{
// eof = true;
// br.close();
Thread.sleep(1000);


}
else{
//System.out.println("Time Temperature");
System.out.println(s);
}

//}

}

catch(InterruptedException e){
System.out.println("got interrupted!");
}

catch (EOFException eo)
{
eof = true;
}
catch (IOException e)
{
System.out.println("IO Error : "+e.getMessage());
}
}
//}

}
catch (IOException e)
{
System.out.println("IO Error : "+e.getMessage());
}

}

}

First off you need to put your code into a code tag to make it easier to read and to take up less space. Secondly I'm just trying to get what you are trying to do. Are you just reading a file in from a google doc then simply outputting it on the screen?

This is a simple code which can read file from google docs and output the file content in the screen. but when my text file will be updated the output needs to be updated automatically.As I am a new member I do not know the proper way of sumitting question. I will submit question in a correct format from the next time.