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Differences between JFrame setVisible (false) and setState (Frame.ICONIFIED)

In Swing, we can hide JFrame

with two methods:

  • frame.setVisible(false)

  • frame.setState(Frame.ICONIFIED)

The difference I found is:

  • frame.setVisible(false)

    removes the icon from the taskbar when it ICONIFIED

    doesn't work.
  • We can add a listener to ICONIFIED

    , whereas we cannot add one to frame.setVisible(false)

    .

Is there another significant difference that I am not seeing? Any ideas would be greatly appreciated.

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3 answers


The main differences I know are as follows:
1) frame.setState (Frame.ICONIFIED) just changes the state of the frame, whereas frame.setVisible (false) changes the visibility of the frame.
2) setState (Frame.ICONIFIED) method in java.awt.Frame class can minify frame programmatically and setState (Frame.NORMAL) to restore it.
3) An invisible frame cannot use a listener, but you can add a listener to a frame that is ICONIFIED.
4) frame.setVisible (false) removes the physical state of the frame from the screen, whereas setState (Frame.ICONIFIED) just changes state while preserving its physical state.



These two methods have their own characteristics, so be more confident in choosing the one that works best for your situation.

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With setVisible(false), if the Component is not already marked invisible, setVisible calls invalidate() which invalidates the Container’s layout and the chain of parents since there is now more screen real estate in the Container and the positions of the siblings must be adjusted to flow into the freed space.

Component API .



But it ICONFIED

does the window minimization process.

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We can add a listener to ICONIFIED whereas we cannot add one for frame.setVisible (false).

You can use a ComponentListener

descriptor too componentHidden(...)

.

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