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&gt;&gt;SwingUtilities.updateCom<wbr />ponentTree<wbr />UI(frame);<wbr /><br />
where should i do this? on every frame?
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yes for every top level container<br />
you might want to also pack() them to account for size changes.<br />

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I wanted to allow the user to select the LookAndFeel they like and change it while they are running the application. But i'm not sure how.. do i just use the UIManager.setLookAndFeel to change it? but since the application is running, all the frame is opened, how this change affect them? <br />
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tks
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I wanted to allow the user to select the LookAndFeel they like and change it while they are running the application. But i'm not sure how.. do i just use the UIManager.setLookAndFeel to change it? but since the application is running, all the frame is opened, how this change affect them? 

tks

&gt;&gt;SwingUtilities.updateComponentTreeUI(frame);
where should i do this? on every frame?

yes for every top level container
you might want to also pack() them to account for size changes.


how do i changed the LookAndFeel for my application when it is already running?

I wanted to allow the user to select the LookAndFeel they like and change it while they are running the application. But i&#39;m not sure how.. do i just use the UIManager.setLookAndFeel to change it? but since the application is running, all the frame is opened, how this change affect them? 

tks

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.