Change shape of JProgressBar

Question

I am new to Java but needs to know that if it is possible for a developer so that he/she can change the shape of the JProgressBar. I mean suppose in my case I want to change the shape so that it looks like a circle or something else?

Though I just want it to be changed from a bar shape to an arc shape or you can say i want to change the bar shape into any other shape. My progress bar may look like a curve other than a bar shape. I want to add a curve in it.

I want to use it as an arc and not in a linear shape manner or you can say can it be change in an oval shape too? — Tech Nerd, Apr 24 '13 at 03:16
*"any hint"* Users often detest the things that developers think are 'kewl' *"or any idea!"* stick with the bar until you realize why that is. — Andrew Thompson, Apr 24 '13 at 03:24
@AndrewThompson raises an important caveat: consult the users. If only racing stripes will do, try [this](http://stackoverflow.com/a/16182011/230513). — trashgod, Apr 24 '13 at 03:28
@user2277645: For better answers, please edit your question to clarify your use-case. — trashgod, Apr 24 '13 at 03:48
Do you mean like this circular [dial](http://stackoverflow.com/a/16182011/230513)? — trashgod, Apr 24 '13 at 11:45
yes offcourse @trashgod please give me a hint if you have any — Tech Nerd, Apr 24 '13 at 17:11

score 7 · Accepted Answer · edited May 23 '17 at 11:50

7

The appearance of a JProgressBar is controlled by the component's UI delegate, typically derived from BasicProgressBarUI. You can supply your own delegate, as shown here, and override the desired paint method.

Addendum: For a semi-circular display, you may be able to leverage DialPlot from the JFreeChart library. A complete example is discussed here. You can use it directly or render the chart in your UI delegate.

edited May 23 '17 at 11:50

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answered Apr 24 '13 at 03:20

trashgod

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I want to change the shape not the colors thanks for your help over and out @trash – Tech Nerd Apr 24 '13 at 03:33
You can use whatever color(s) you want; it won't automatically match the platform default, but you can use the UI [defaults](http://stackoverflow.com/a/11148842/230513) as a start. – trashgod Apr 24 '13 at 03:45
You can also change the shape in the UI delegate, but then you can reuse less code from BasicProgressBarUI. Not an easy task. Check out http://javagraphics.blogspot.co.at/2008/05/angles-need-gui-widget-for-angles.html - here an "angle UI" is given to a JSlider. – lbalazscs Apr 24 '13 at 12:28
@lbalazscs the link you mentioned has no such information sorry for asking from you – Tech Nerd Apr 24 '13 at 17:25
That link is just an example, it shows how one can use a completely different-looking UI delegate for a Swing component. It does not solve your problem directly. – lbalazscs Apr 25 '13 at 10:03
See also this [approach](http://stackoverflow.com/a/16333445/230513). – trashgod May 02 '13 at 13:08

Change shape of JProgressBar

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