Using Progress Bar in java apps
Please, i am writing a program in java to read a file, perform some operation on each line of the file and them write back to another file. I would like to know how to use a progress bar to mark the progress of the task.
View Answers
October 30, 2010 at 3:31 PM
Hi Friend,
Try the following code:
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.html.*;
public class ProgressBarExample extends JFrame{
int i=0;
Timer timer;
public ProgressBarExample() {
final JLabel label=new JLabel();
final JButton button = new JButton("Start");
final JProgressBar pb = new JProgressBar(0, 20);
pb.setValue(0);
pb.setStringPainted(true);
JPanel panel = new JPanel();
panel.add(button);
panel.add(pb);
JPanel panel1 = new JPanel();
panel1.add(panel, BorderLayout.NORTH);
panel1.add(label, BorderLayout.CENTER);
add(panel1);
setSize(300,100);
setVisible(true);
timer = new Timer(1000, new ActionListener() {
public void actionPerformed(ActionEvent evt) {
if (i == 20){
Toolkit.getDefaultToolkit().beep();
timer.stop();
button.setEnabled(true);
pb.setValue(0);
String str = "<html><font color=red>" + "<b>" +
"File is readed." + "</b>" + "</font>" + "</html>";
label.setText(str);
}
i = i + 1;
pb.setValue(i);
}
});
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae) {
button.setEnabled(false);
int i = 0;
String str = "<html><font color=green><b>File Reading is in process.......</b></font></html>";
label.setText(str);
timer.start();
try{
BufferedReader reader = new BufferedReader(new FileReader("c:/data.txt"));
String line=null;
while ((line=reader.readLine())!=null){
String data = line.replaceAll(" ","");
FileWriter fstream = new FileWriter("c:/out.txt",true);
BufferedWriter output = new BufferedWriter(fstream);
output.write(data);
output.newLine();
output.close();
}
}
catch(Exception e){}
}
});
}
public static void main(String[] args) {
ProgressBarExample spb = new ProgressBarExample();
}
}
Thanks
October 30, 2010 at 3:33 PM
Hi Friend,
Try the following code:
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.html.*;
public class ProgressBarExample extends JFrame{
int i=0;
Timer timer;
public ProgressBarExample() {
final JLabel label=new JLabel();
final JButton button = new JButton("Start");
final JProgressBar pb = new JProgressBar(0, 20);
pb.setValue(0);
pb.setStringPainted(true);
JPanel panel = new JPanel();
panel.add(button);
panel.add(pb);
JPanel panel1 = new JPanel();
panel1.add(panel, BorderLayout.NORTH);
panel1.add(label, BorderLayout.CENTER);
add(panel1);
setSize(300,100);
setVisible(true);
timer = new Timer(1000, new ActionListener() {
public void actionPerformed(ActionEvent evt) {
if (i == 20){
Toolkit.getDefaultToolkit().beep();
timer.stop();
button.setEnabled(true);
pb.setValue(0);
String str = "<html><font color=red>" + "<b>" +
"File is readed." + "</b>" + "</font>" + "</html>";
label.setText(str);
}
i = i + 1;
pb.setValue(i);
}
});
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae) {
button.setEnabled(false);
int i = 0;
String str = "<html><font color=green><b>File Reading is in process.......</b></font></html>";
label.setText(str);
timer.start();
try{
BufferedReader reader = new BufferedReader(new FileReader("c:/data.txt"));
String line=null;
while ((line=reader.readLine())!=null){
String data = line.replaceAll(" ","");
FileWriter fstream = new FileWriter("c:/out.txt",true);
BufferedWriter output = new BufferedWriter(fstream);
output.write(data);
output.newLine();
output.close();
}
}
catch(Exception e){}
}
});
}
public static void main(String[] args) {
ProgressBarExample spb = new ProgressBarExample();
}
}
Thanks
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