Transparent JFrame background

Question

Is it possible to make a JFrame that has a transparent background and draw an image on it, so only the image will be visible with no border or background?

Punyapat · Answer 1 · 2013-03-14T19:31:01.973

14

Yes, it's possible in many ways. This is one of them:

setUndecorated(true);
setBackground(new Color(1.0f,1.0f,1.0f,0.5f));

4th float (which I set to 0.5f) in Color's constructor is alpha channel. It can be 0.0f - 1.0f depend on transparency you want.

edited Mar 14 '13 at 19:31

answered Mar 14 '13 at 18:40

Punyapat

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This is worked for me once I replaced `0.5f` with `0.0f`. Nice Answer. – Hasitha Jayawardana May 07 '19 at 04:58

score 11 · Accepted Answer · edited Aug 15 '19 at 21:11

11

See Translucent and Shaped Swing Windows by Kirill Grouchnikov.

edited Aug 15 '19 at 21:11

Community

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answered Mar 28 '10 at 18:46

McDowell

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Link is now dead. Google suggests this blog post: http://www.pushing-pixels.org/2008/02/27/translucent-and-shaped-windows-in-core-java.html – Mark Peschel Mar 04 '18 at 20:59

score 4 · Answer 3 · answered Oct 07 '15 at 09:14

4

You should make content pane transparent too.

frame.setUndecorated(true);
frame.getContentPane().setBackground(new Color(1.0f,1.0f,1.0f,0.0f));
frame.setBackground(new Color(1.0f,1.0f,1.0f,0.0f));

answered Oct 07 '15 at 09:14

ossobuko

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score 1 · Answer 4 · edited Jun 11 '12 at 04:34

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It is possible.

If your JFrame is a local variable or field:

myJFrame.setUndecorated(true);

If your class extends JFrame:

setUndecorated(true);

edited Jun 11 '12 at 04:34

Michael

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answered Jun 10 '12 at 16:49

Taylor Golden

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true that since jdk7, transparency is only supported for undecorated frames. How to call methods should be basic knowledge, though :-) – kleopatra Oct 21 '12 at 09:19

score 0 · Answer 5 · edited May 23 '17 at 12:16

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For a Mac OS X example, see Re-paint problem on translucent frame/panel/component.

edited May 23 '17 at 12:16

Community

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answered Mar 28 '10 at 20:29

trashgod

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score 0 · Answer 6 · answered Aug 24 '21 at 08:10

0

setOpacity(0.50f);//50% opaque

answered Aug 24 '21 at 08:10

Prakash D

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Transparent JFrame background

6 Answers6

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