I'm a java newbie... I need to know how to reload
a JPanel
? I extended the JPanel
class and created a panel that will run in a cardlayout
in an Applet. I want this panel to reload/refresh
after the user clicks a button
in this panel. I tried including the revalidate
() and repaint
() methods (methods I don't understand well) in the ActionListener
for the button but nothing happened. Can anyone throw some light on how to correctly refresh the whole panel?
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3please whats is reload, for better help sooner post an [SSCCE](http://sscce.org/), short, runnable, compilable – mKorbel Jul 12 '13 at 06:09
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2What do you mean by "reload" and "refresh" exactly? Show some code, explain with an example what you want to do. – JB Nizet Jul 12 '13 at 06:09
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refresh/reload/update all the components in the panel... some of the components are displaying info that is being updated through jdbc – JLA Jul 12 '13 at 06:13
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you should just use the Graphics instance of the JPanel. – Manish Doshi Jul 12 '13 at 06:22
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2Let's take a JLabel for example, whose text is reloaded from the database. To make it display the new text, use label.setText(). For a JTable, use table.setModel(), or update the data in its model. For a JTextArea, setText(), etc. – JB Nizet Jul 12 '13 at 06:22
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2@Manish Doshi s/he want to setText based on value from JDBC, then Graphics haven't something with – mKorbel Jul 12 '13 at 06:23
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@user2108393 : If you are looking for something like, an event that can clear all the fields and other components of their previous values, you can have a look at this [example](http://stackoverflow.com/a/13378672/1057230), hopefully this might be of some help. – nIcE cOw Jul 12 '13 at 13:39
1 Answers
20
This works fine for me. But after an other
_panel.revalidate();
_panel.repaint();

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first removeAll() to remove all components _panel.removeAll(); _panel.revalidate(); _panel.repaint(); – Shinwar ismail Apr 23 '18 at 18:34