Re: Using JScrollPane With JTable

Question

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myNamePane.setVisible(true);This is meaningless, a component becomes visible by default when you add it to a visible container
if(e.getSource().equals(newStudent))
       JFrame newFrame = new JFrame("Please select a student");
       newFrame.setContentPane(myNamePane);
       newFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       newFrame.setResizable(false);
       newFrame.pack();
       newFrame.setVisible(true);
     }Which brings us to the main issue, you need to add the JScrollPane to you frame
newFrame.add(myNamePane);Read the tutorial: [Using Top-Level Containers|http://java.sun.com/docs/books/tutorial/uiswing/components/toplevel.html]

Answer 1

Hello Rodney,
Thanks for the information and the tutorial.. I've worked with containers before but never got around to reading that one, which has clarified a few things for me.
Unfortunately however, my problem persists. I obviously can't set the content pane as the JScrollPane and add it to the Frame, so rather than setting the JScrollPane as the content pane (which I did previously), I added it to the frame as you suggested:
if(e.getSource().equals(newStudent))
     JFrame newFrame = new JFrame("Please select a student");
//     newFrame.setContentPane(myNamePane);
     newFrame.add(myNamePane);
     newFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     newFrame.setResizable(false);
     newFrame.pack();
     newFrame.setVisible(true);
}But the same thing happens! All I see is a new, empty JFrame. I feel like my understanding of the JScrollPane may be flawed, but I'm really not sure :/
Edit: In fact, it is most definitely a problem either with my JTable or my JScrollPane. I used the setPreferredSize() method to check if the JScrollPane was being displayed in the JFrame, and it is. There is no JTable in the pane however.
Edit #2: The problem was, in fact, with my JTable. The ResultSet I was using was TYPE_FORWARD_ONLY, and I was trying to call studentNameSet.first(), which prevented the JTable from ever being created. Thanks for your help, Rodney. Although I do have one more question.. Do you know a better way for me to find the number of student names given that ResultSet? I can't iterate through it twice as I had done earlier, so now for testing purposes I've simply hardcoded the number in, but I'd rather have the program find the total number of entries dynamically.
Edited by: Pheer on Jul 22, 2008 10:07 AM
Edited by: Pheer on Jul 22, 2008 10:09 AM