Remove JFrame title bar

Source code below will show you, how to remove title bar from a JFrame.

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COMPLETE SOURCE CODE FOR : RemoveJFrameTitleBar.java
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import javax.swing.JFrame;

public class RemoveJFrameTitleBar
{
public static void main(String[]args)
{
 //Create a JFrame
 JFrame frame=new JFrame();

 //Method setUndecorated(true) will eliminate JFrame title bar
 frame.setUndecorated(true);

 //Set JFrame size to :
 //Width : 400 pixels
 //Height : 400 pixels
 frame.setSize(400,400);

 //Make JFrame visible. So we can see it.
 frame.setVisible(true);
}
}

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JUST COMPILE AND EXECUTE IT
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Create window without title bar and window management button

In java, we can use JWindow to create window without title bar and window management button.