Java Tutorial/Swing/ProgressMonitorInputStream

14. ProgressMonitorInputStream

Represent an input stream filter that uses a ProgressMonitor to check the progress of the reading of an input stream.

   <source lang="java">

import java.io.BufferedReader; import java.io.FileInputStream; import java.io.InputStreamReader; import javax.swing.JLabel; import javax.swing.ProgressMonitorInputStream; public class ProgressInputSample {

 public static final int NORMAL = 0;
 public static final int BAD_FILE = 1;
 public static final int CANCELED = NORMAL;
 public static final int PROBLEM = 2;
 public static void main(String args[]) {
   int returnValue = NORMAL;
   try {
     FileInputStream fis = new FileInputStream("person.xml");
     JLabel filenameLabel = new JLabel("persion.xml", JLabel.RIGHT);
     Object message[] = { "Reading:", filenameLabel };
     ProgressMonitorInputStream pmis = new ProgressMonitorInputStream(null, message, fis);
     InputStreamReader isr = new InputStreamReader(pmis);
     BufferedReader br = new BufferedReader(isr);
     String line;
     while ((line = br.readLine()) != null) {
       System.out.println(line);
     }
     br.close();
   } catch (Exception exception) {
     returnValue = PROBLEM;
   }
   System.exit(returnValue);
 }

}</source>