Java

adding a JFrame component to JTabbedPane

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Join Date: Apr 2007

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new_2_java new_2_java is offline

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adding a JFrame component to JTabbedPane

Jan 9th, 2008

Hello folks,

I am trying to add a JFrame object into JTabbedPane, but I am getting a java.lang.IllegalArgumentException. Here's my code snipt.

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// other codes...
JTabbedPane tabs = new JTabbedPane();
tabs.addTab("Flight Information",flightInfoPane);  <-------------- line 28
// other codes...
private FlightInfoPane flightInfoPane = new FlightInfoPane();
// other codes...
JTabbedPane tabs = new JTabbedPane();
tabs.addTab("Flight Information",flightInfoPane);  <-------------- line 28
// other codes...
private FlightInfoPane flightInfoPane = new FlightInfoPane();

Here I have flightInfoPane class's declaration...

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class FlightInfoPane extends JFrame {
        public FlightInfoPane () {
        }
 // rest of the class ....
}
class FlightInfoPane extends JFrame {
        public FlightInfoPane () {
        }
 // rest of the class ....
}

This is the error that I am getting. I am not sure if this operation is allowed.

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F:\DCTM_WORK>java FlightReservationDesktop.Reservation
Exception in thread "main" java.lang.IllegalArgumentException: adding a window to a container
        at java.awt.Container.addImpl(Unknown Source)
        at javax.swing.JTabbedPane.insertTab(Unknown Source)
        at javax.swing.JTabbedPane.addTab(Unknown Source)
        at FlightReservationDesktop.Reservation.<init>(Reservation.java:28)
        at FlightReservationDesktop.Reservation.main(Reservation.java:35)
F:\DCTM_WORK>java FlightReservationDesktop.Reservation
Exception in thread "main" java.lang.IllegalArgumentException: adding a window to a container
        at java.awt.Container.addImpl(Unknown Source)
        at javax.swing.JTabbedPane.insertTab(Unknown Source)
        at javax.swing.JTabbedPane.addTab(Unknown Source)
        at FlightReservationDesktop.Reservation.<init>(Reservation.java:28)
        at FlightReservationDesktop.Reservation.main(Reservation.java:35)

please advise...

Thanks.

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Join Date: Feb 2006

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masijade

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Re: adding a JFrame component to JTabbedPane

Jan 9th, 2008

A JFrame is a top-level component. It can not be "added" to another. Use a JPanel.

Java Programmer and Sun Systems Administrator

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Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.
--Brian Kernighan

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PoovenM

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Re: adding a JFrame component to JTabbedPane

Jan 9th, 2008

I agree with Masijade, and I think you could probably just change the JFrame inheritance to JPanel, well depending on your actual coding hehe Anyway, what I wanted to recommend is NetBeans. It’s a very innovate IDE when one is dealing with GUI applications

You’d just create a new Java project and create a new GUI form; then you can drag and drop components just like in Visual Basic, but since it's Java it's better

You certainly don’t have to code within NetBeans; just copy the automatically generated GUI code to the IDE that you’re using.