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作者 Re:不明白 contentPane = (JPanel) this.getContentPane() [Re:zsh220824]
tzutolin



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于 2008-01-24 09:11 user profilesend a private message to usersearch all posts byselect and copy to clipboard. ie only, sorry for netscape users:-)add this post to my favorite list
Hi zsh220824,

"this.getContentPane" returns a type of Container which is a parent class of JComponent as well as JPanel.

However, I don't see anything wrong syntatically here with your statement since you can do a strong type cast in Java (Please correct me if I am wrong).

This statment is basically get the contentPane from your JFrame and cast it to a JPanel and then reassign to a local variable which is named as contentPane.

Best Regards,
David



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6038 不明白 contentPane = (JPanel) this.getContentPane() zsh220824 72 2008-01-22 17:19
4930 Re:不明白 contentPane = (JPanel) this.getContentPane() tzutolin 463 2008-01-24 09:11

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