Demonstrate ProgressMeterInputStream : Input Output Stream « File Input Output « Java

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Java » File Input Output » Input Output StreamScreenshots 
Demonstrate ProgressMeterInputStream

/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
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 * modification, are permitted provided that the following conditions
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 *    notice, this list of conditions and the following disclaimer.
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 *    notice, this list of conditions and the following disclaimer in the
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 * POSSIBILITY OF SUCH DAMAGE.
 
 * Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */


import javax.swing.*;
import java.io.*;

/**
 * Demonstrate ProgressMeterInputStream.
 *
 @author  Ian Darwin, http://www.darwinsys.com/
 @version  $Id: ProgressMeterStrmDemo.java,v 1.5 2004/02/23 03:39:22 ian Exp $
 */
public class ProgressMeterStrmDemo extends JFrame implements Runnable {

  public void readTheFile() throws IOException {
    // OK, we're going to read a file. Do it...
    FileInputStream is = new FileInputStream("index.htm");
    BufferedReader ds = new BufferedReader(
      new InputStreamReader(
        new ProgressMonitorInputStream(this,
          "Loading..."new FileInputStream("index.htm"))));

    // Now read it...
    String line;
    while ((line = ds.readLine()) != null) {
      if (System.getProperties().getProperty("debug.lines")!=null)
        System.err.println("Read this line: " + line);
      try {
        Thread.sleep(200);    // slow it down a bit.
      catch(InterruptedException e) {
        return;
      }
    }
    // Close file, since it was opened.
    ds.close();
  }

  /** We use a separate "thread" (see Threads chapter) to do the reading,
   * so the GUI can run independantly (since we have "sleep" calls to make
   * it appear to run more slowly).
   */
  public void run() {
    try {
      readTheFile();
    catch (EOFException nme) {
      return;
    catch (IOException e) {
      System.err.println(e.toString());
      return;
    }
  }

  public ProgressMeterStrmDemo() {
    new Thread(this).start();
  }

  public static void main(String[] av) {
    ProgressMeterStrmDemo demo = new ProgressMeterStrmDemo();
    demo.setSize(100100);
    demo.getContentPane().add(new JLabel("ProgressMeterStrmDemo"));
    demo.pack();
    demo.setVisible(true);

  
}



           
       
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