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    <p>For <a href="http://docs.oracle.com/javase/6/docs/api/javax/swing/ProgressMonitorInputStream.html" rel="nofollow noreferrer"><code>ProgressMonitorInputStream</code></a> to work , You need to read very big file. It is specified in its document that:</p> <blockquote> <p>This creates a progress monitor to monitor the progress of reading the input stream. <strong>If it's taking a while, a ProgressDialog will be popped up to inform the user.</strong> If the user hits the Cancel button an InterruptedIOException will be thrown on the next read. All the right cleanup is done when the stream is closed.</p> </blockquote> <p>Here is the example. Make sure that you input a file(<code>bigFile.txt</code>) contains lot of stuffs to read.<br></p> <p><img src="https://i.stack.imgur.com/WkM06.jpg" alt="enter image description here"></p> <pre><code>import java.awt.Color; import java.io.BufferedReader; import java.io.FileInputStream; import java.io.InputStreamReader; import javax.swing.JLabel; import javax.swing.ProgressMonitorInputStream; public class ProgressMonitorInputStreamDemo { public static void main(String args[]) throws Exception { String file = "bigFile.txt"; FileInputStream fis = new FileInputStream(file); JLabel filenameLabel = new JLabel(file, JLabel.RIGHT); filenameLabel.setForeground(Color.black); 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(); } } </code></pre> <p><strong>Note:</strong> <em>If you want to see <code>ProgressBar</code> , no matter how small file you are reading , You can use <a href="http://docs.oracle.com/javase/6/docs/api/javax/swing/SwingWorker.html" rel="nofollow noreferrer"><code>SwingWorker</code></a> . Have a look at</em> <strong><a href="https://stackoverflow.com/a/15710912/1981279">this Post</a></strong>.</p>
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    1. POProgress monitor of stream
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    1. USVishal K
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    1. COI can find this kind of tutorial by myself. I am asking for solution for this particular code that I've quoted in main post. Because for this moment it is a problem for me to do it by myself.
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      1. USAriel Grabijas
    2. COLook at the Post that I have written in the **Note** section.. And yes of course you can find tutorials..But I expect that after going through those tutorials and few Tips you would easily solve your problem...
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      1. USVishal K
    3. COYes I understand that Note section. But i don't really need it for small files. So I took file big enough for this, and after that window appears. But this window is empty. I've tried 2 codes, yours with additional streams, and the one from @hyde.
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      1. USAriel Grabijas
 

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