Databases
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PO
 

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    <p>In the future please post an <a href="http://sscce.org" rel="nofollow">SSCCE</a> instead of copy/pasting some classes.</p> <p>Here's an SSCCE of your MainScreen, with the non-essentials stripped out, and a main method added:</p> <pre><code>import java.awt.*; import javax.swing.*; public class MainScreen extends JFrame { JTabbedPane tabbedPane = new JTabbedPane(); final JPanel entrance = new JPanel(); public MainScreen() { tabbedPane.addTab("Entrance", entrance); add(tabbedPane, BorderLayout.CENTER); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { JFrame frame = new MainScreen(); frame.setSize(300, 200); frame.setVisible(true); } }); } } </code></pre> <p>... and here's an SSCCE for QueryScreen:</p> <pre><code>import java.awt.*; import javax.swing.*; public class QueryScreen extends MainScreen { final JPanel queryList = new JPanel(); public QueryScreen() { tabbedPane.addTab("Query List", queryList); //add( tabbedPane, BorderLayout.CENTER ); /* not needed */ } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { JFrame frame = new QueryScreen(); frame.setSize(300, 200); frame.setVisible(true); } }); } } </code></pre> <p>As you can see, this works, and for the most part, all I did was remove unnecessary code and added a main to each.</p> <p>If you're still having problems, please update your question with an SSCCE and post the specific problem you're having.</p>
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    1. COthanks for the support; it's working almost as it should - but before I post one edit with the SSCCE I would like to know what exactly the statment of invokeLater does. regarding to http://docs.oracle.com/javase/6/docs/api/javax/swing/SwingUtilities.html it says here that it runs asynchronously another thread and maybe that's the problem I don't want to have in my code - check edit one for the screen; every time I call queryScreen one window of the program is called; I want to call another Tab for every query I make. Have any idea what might help now please? Thanks
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      1. USVictor R. Oliveira
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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