How to collect JScrollPanes into a Container variable? (urgent...)

What do you mean by Colletc?

You mead ADD JScrollPanes to a Container?

Do you have some JScrollPanes with some components and you would like to add them to a Container? Is that right?

PS.

Please use the code format tag to show your code:

class SwingApplication implements ActionListener

{

...

public Container createComponents()

{

Container allComponents;

...

jspane = new JScrollPane(panel);

jspane2 = new JScrollPane(cards);

allComponents = jspane; // THIS WORKS BUT I WOULD LIKE TO COLLECT BOTH jspane AND jspane2 WITH ADD COMMAND

return allComponents;

}

...

class DragImage

{ public static void main(String[] args)

{

JFrame frame = new JFrame("SwingApplication");

SwingApplication app = new SwingApplication();

Container contents = app.createComponents();

frame.getContentPane().add(contents, BorderLayout.CENTER);

Franziska at 2007-7-12 2:00:02 >

THanks for your interest!!

Perhaps I give the whole source code

The problem lies in the following place:

allComponents = jspane;

return allComponents;

}

I would like to use some kind of command

allComponents.add(jspane);

but it does not seem to work. I get the error "variable allComponents might not be initialized".

The program should print images in two rows. With my current knowledge i can only print one row of images.

Thanks!

import java.awt.*;

import java.awt.event.*;

import java.awt.datatransfer.*;

import javax.swing.*;

class SwingApplication implements ActionListener

{

// extends JScrollPane

private JScrollPane jspane;

private JScrollPane jspane_n;

private JPanel panel;

private JLabel label;

private Icon icon;

private JPanel panel2;

private JLabel label2;

private Icon icon2;

private JPanel panel_n;

private JLabel label_n;

private Icon icon_n;

private JTextField testText;

private int k;

private static String labelPrefix = "Testing: ";

private int numClicks = 0;

final JLabel label_testing = new JLabel(labelPrefix + "nothing");

JPanel cards; //a panel that uses CardLayout

final String BUTTONPANEL = "JPanel with JButtons";

final String TEXTPANEL = "JPanel with JTextField";

public Container createComponents()

{

Container allComponents;

icon = new ImageIcon("kirjain_a.gif");

label = new JLabel();

label.setIcon(icon);

icon2 = new ImageIcon("kirjain_b.gif");

label2 = new JLabel();

label2.setIcon(icon2);

icon_n = new ImageIcon("numero_1.gif");

label_n = new JLabel();

label_n.setIcon(icon_n);

label.setTransferHandler(new ImageSelection());

label2.setTransferHandler(new ImageSelection());

label_n.setTransferHandler(new ImageSelection());

MouseListener mouseListener = new MouseAdapter() {

public void mousePressed(MouseEvent e) {

JComponent sourceEvent = (JComponent)e.getSource();

// Object sourceEvent = whatHappened.getSource();

if (sourceEvent == label)

{ numClicks++;

label_testing.setText(labelPrefix + numClicks);

}

if (sourceEvent == label2)

{

numClicks--;

label_testing.setText(labelPrefix + numClicks);

}

JComponent comp = (JComponent)e.getSource();

TransferHandler handler = comp.getTransferHandler();

handler.exportAsDrag(comp, e, TransferHandler.COPY);

}

};

label.addMouseListener(mouseListener);

label2.addMouseListener(mouseListener);

label_n.addMouseListener(mouseListener);

panel = new JPanel();

// panel.setLayout(new GridLayout(1,3));

panel.add(label);

panel.add(label2);

panel_n = new JPanel();

panel_n.add(label_n);

//Create the panel that contains the "cards".

cards = new JPanel(new CardLayout());

cards.add(panel_n, BUTTONPANEL);

cards.add(panel_n, TEXTPANEL);

panel.add(label_testing);

jspane = new JScrollPane(panel);

jspane_n = new JScrollPane(cards);

//jspane.setLayout(new GridLayout(3,2));

//jspane.getViewport().add(panel);

//jspane_n.getViewport().add(cards);

//allComponents.add(panel, BorderLayout.PAGE_START);

//allComponents.add(cards, BorderLayout.CENTER);

//allComponents.add(jspane);

//allComponents.add(jspane_n);

allComponents = jspane;

return allComponents;

}

//label.addActionListener(this);

//k=0;

public void actionPerformed(ActionEvent whatHappened)

{ Object sourceEvent = whatHappened.getSource();

if (sourceEvent == label)

{ numClicks++;

label_testing.setText(labelPrefix + numClicks);

}

//repaint();

}

} // end class OwnPanel

class CloserClass extends WindowAdapter

{ public void windowClosing(WindowEvent e)

{ System.exit(0);

}

}

class DragImage

{ public static void main(String[] args)

{

JFrame frame = new JFrame("SwingApplication");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

SwingApplication app = new SwingApplication();

Container contents = app.createComponents();

frame.getContentPane().add(contents, BorderLayout.CENTER);

//Display the window.

//addWindowListener(new CloserClass());

frame.pack();

frame.setVisible(true);

}

} // end class DragImage

wonderful123a at 2007-7-12 2:00:03 >

Thanks for advice!

Unfortunately my application still refuces to show the images.

I mean the elements that I have tried to add to Container don't seem to reach all the way to the screen.

If still some suggestions, I am very grateful!!

Best wishes

Message was edited by:

wonderful123

wonderful123a at 2007-7-12 2:00:03 >