What is the Root Pane in Swing?

Question

this question was asked : Disposing JFrame by clicking from an inner JPanel

and people provided answers that i didn't quite understand so the question is what does this actually do :

((Window) getRootPane().getParent()).dispose();

could some one explain it to me?

Is this a problem of programming? IMO it is a problem of understanding. I think there are documentations for the programming language. Read the fine manuals. — jogo, Dec 12 '15 at 11:36
The best way to find a JComponent's window is with its [getTopLevelAncestor](https://docs.oracle.com/javase/8/docs/api/javax/swing/JComponent.html#getTopLevelAncestor--) method. The second best way is with [SwingUtilities.getWindowAncestor](https://docs.oracle.com/javase/8/docs/api/javax/swing/SwingUtilities.html#getWindowAncestor-java.awt.Component-). A JRootPane is not always a direct child of the window. — VGR, Dec 12 '15 at 18:10

score 2 · Accepted Answer · edited Dec 12 '15 at 13:04

2

It gets the JPanel in which the JButton is on.
Then it gets the parent of the JPanel, which is the JFrame.
Finally it disposes the JFrame using dispose().

See Root Pane Container for more information

edited Dec 12 '15 at 13:04

Yassin Hajaj

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answered Dec 12 '15 at 11:39

Dan

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that was helpful got it – M.Helmy Dec 12 '15 at 12:26
@M.Helmy Glad I could help – Dan Dec 12 '15 at 13:20
@M.Helmy If you feel this answer is correct could you please accept it as an answer by clicking on the tick underneath the up and down arrows next to the answer – Dan Dec 12 '15 at 13:21

What is the Root Pane in Swing?

1 Answers1