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Practical No - 9

The document provides code for two Java programs that use JProgressBars. The first program continuously updates a JProgressBar from 0 to 2000 over 10 seconds. The second program launches a JProgressBar when a JButton is clicked, also updating it from 0 to 2000 over 10 seconds.

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Pratiksha Jadhav
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722 views5 pages

Practical No - 9

The document provides code for two Java programs that use JProgressBars. The first program continuously updates a JProgressBar from 0 to 2000 over 10 seconds. The second program launches a JProgressBar when a JButton is clicked, also updating it from 0 to 2000 over 10 seconds.

Uploaded by

Pratiksha Jadhav
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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PRACTICAL 9

WRITE A PROGRAM TO LAUNCH A JPROGRESSBAR

1) WRITE A PROGRAM TO DEMONSTRATE THE FOLLOWING OUTPUT:

import javax.swing.*;
import java.awt.*;
public class JProgresBarDemo
{
JProgressBar JProgressBarObj;
int i=0,num=0;
JProgresBarDemo()
{
JFrame JFrameMain = new JFrame();
JFrameMain.setVisible(true);
JFrameMain.setSize(400,400);
JFrameMain.setLayout(new FlowLayout());
JProgressBarObj = new JProgressBar(0,2000);
JProgressBarObj.setValue(0);
JProgressBarObj.setStringPainted(true);
JFrameMain.add(JProgressBarObj);
}
public static void main(String[] args)
{
JProgresBarDemo jpd = new JProgresBarDemo();
jpd.iterate();
}
public void iterate()
{
while(i<=2000){
JProgressBarObj.setValue(i);
i =i+20;
try
{
Thread.sleep(150);
}
catch(Exception e)
{
}
}
}
}

2) Write a Program using JProgressBar to show the progress of


Progressbar when user clicks on JButton.
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class JProgressBarApplet extends JApplet implements
ActionListener
{
JProgressBar JProgressBarObj;
JButton JButtonObj;
int i=0;
public void init()
{
setSize(400,400);
setVisible(true);
setLayout(new FlowLayout());
JButtonObj = new JButton("Click Me");
JButtonObj.addActionListener(this);
JProgressBarObj = new JProgressBar();
JProgressBarObj.setStringPainted(true);
JProgressBarObj.setValue(0);
add(JButtonObj);
add(JProgressBarObj);
}
public void actionPerformed(ActionEvent ie)
{
this.iterate();
}
public void iterate()
{
while(i<=2000)
{
JProgressBarObj.setValue(i);
i=i+20;
try
{
Thread.sleep(150);
}
catch(Exception e)
{}
}
}
}
/* <applet code="JProgressBarApplet" height="400" width="400">
</applet>
*/
Output:

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