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You need to set that before displaying the frame
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You need to set that before displaying the frame

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Why sorry, nobody harmed.<br />
Pleased to be a help.<br />
<br />
;JOOP!
</div>


Why sorry, nobody harmed.
Pleased to be a help.

;JOOP!

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<div class="content wysiwyg-content">
When I tried to do <br />
JFrame.frame.setUndecorate<wbr />d(true);<br />
I am getting this exception<br />
Exception in thread &quot;main&quot; java.awt.IllegalComponentS<wbr />tateExcept<wbr />ion: The frame is<br />
&nbsp;displayable.<br />
&nbsp; &nbsp; &nbsp; &nbsp; at java.awt.Frame.setUndecora<wbr />ted(Unknow<wbr />n Source)<br />
&nbsp; &nbsp; &nbsp; &nbsp; at TransparentBackground.main<wbr />(Transpare<wbr />ntBackgrou<wbr />nd.java:16<wbr />3)<br />
<br />
Thanks
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When I tried to do 
JFrame.frame.setUndecorated(true);
I am getting this exception
Exception in thread "main" java.awt.IllegalComponentStateException: The frame is
 displayable.
        at java.awt.Frame.setUndecorated(Unknown Source)
        at TransparentBackground.main(TransparentBackground.java:163)

Thanks

Probelm with Undecorated in JFrame

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.