JProgressBar : JProgressBar « Swing « Java Tutorial

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Java Tutorial » Swing » JProgressBar

14. 32. 1. JProgressBar

There are five different constructors for JProgressBar:


public JProgressBar()

JProgressBar aJProgressBar = new JProgressBar();



public JProgressBar(int orientation)

JProgressBar aJProgressBar = new JProgressBar(JProgressBar.VERTICAL);

JProgressBar bJProgressBar = new JProgressBar(JProgressBar.HORIZONTAL);



public JProgressBar(int minimum, int maximum)

JProgressBar aJProgressBar = new JProgressBar(0, 500);



public JProgressBar(int orientation, int minimum, int maximum)

JProgressBar aJProgressBar = new JProgressBar(JProgressBar.VERTICAL, 0, 1000);



public JProgressBar(BoundedRangeModel model)

// Data model, initial value 0, range 0-250, and extent of 0

DefaultBoundedRangeModel model = new DefaultBoundedRangeModel(0, 0, 0, 250);

JProgressBar aJProgressBar = new JProgressBar(model);


import java.awt.BorderLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;



import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JProgressBar;



public class JProgressBarSetValue extends JFrame {

  JProgressBar bar = new JProgressBar();

  JButton step = new JButton("Step");



  public JProgressBarSetValue() {

    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    step.addActionListener(new ActionListener() {

      public void actionPerformed(ActionEvent e) {

        int value = bar.getValue() + 7;

        if (value > bar.getMaximum()) {

          value = bar.getMaximum();

        }

        bar.setValue(value);

      }

    });



    getContentPane().add(bar, BorderLayout.NORTH);

    getContentPane().add(step, BorderLayout.EAST);

    pack();

    setVisible(true);

  }



  public static void main(String arg[]) {

    new JProgressBarSetValue();

  }

}

14. 32. JProgressBar
	14. 32. 1.	JProgressBar
	14. 32. 2.	Creating a JProgressBar Component with an Unknown Maximum
	14. 32. 3.	A progress bar is used for lengthy tasks.
	14. 32. 4.	Labeling a JProgressBar
	14. 32. 5.	Virtical JProgressBar
	14. 32. 6.	Creating a modal progress dialog
	14. 32. 7.	Set all the values at once by using the model
	14. 32. 8.	Using an Indeterminate JProgressBar
	14. 32. 9.	Displaying the Percentage Done on a JProgressBar Component
	14. 32. 10.	Getting and Setting the Values of a JProgressBar Component
	14. 32. 11.	Listening for Value Changes in a JProgressBar Component
	14. 32. 12.	Handling JProgressBar Events: notification of data model changes through a ChangeListener
	14. 32. 13.	ProgressBar and Task
	14. 32. 14.	SwingWorker and ProgressBar
	14. 32. 15.	Customizing JProgressBar Look and Feel

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