CODEWITHSUNDEEP
javaswinguser-interfacejpanel
krypton36
krypton36

Reputation: 317

Java Swing - Making a scrollable JPanel inside a JFrame

I have a custom component called FixtureComponent that extends JPanel, it is basically a JPanel containing a number of controls placed inside it, each with it's own size and location. What I am trying to do is to place a number of FixtureComponent vertically in my JFrame as follows: 

public static void main(String[] args)
{
    SwingUtilities.invokeLater(new Runnable() {

        @Override
        public void run() {
            main frame = new main();
            FixtureComponent comPanel = new FixtureComponent();

            frame.getContentPane().setLayout(new BoxLayout(frame.getContentPane(), BoxLayout.Y_AXIS));
            frame.setSize(300, 400);
            frame.setDefaultCloseOperation(EXIT_ON_CLOSE);


            for (Integer i = 0; i < 20; i++)
            {
                frame.getContentPane().add(comPanel);
            }
            frame.setVisible(true);

        }
    });
}

The problem I am getting is when I run the above code, I get a single FixtureComponent placed at the top of the JFrame instead of getting 20 FixtureComponents placed vertically above each other.

And I would like to also know in case of that I successfully got the above code to work, how to add a scroll bar to scroll across the FixtureComponent?

Thank you.

Upvotes: 0

Views: 731

Answers (1)

Gready
Gready

Reputation: 1164

Create and add a JScrollPane to the frame, setting the JScrollPane context to the content you need scrolling, in the example below this is a JPanel named container.

Add your FixtureComponent objects to container, and boom. Here's the code:

public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {

        @Override
        public void run() {
            Main frame = new Main();

            JPanel container = new JPanel();
            container.setLayout(new BoxLayout(container, BoxLayout.Y_AXIS));

            JScrollPane scroller = new JScrollPane(container);
            scroller.setPreferredSize(new Dimension(200, 1000));

            for (Integer i = 0; i < 20; i++) {
                FixtureComponent fixture = new FixtureComponent();
                container.add(fixture);
            }

            frame.setLayout(new BorderLayout());
            frame.add(scroller, BorderLayout.WEST);
            frame.setSize(300, 400);
            frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
            frame.setVisible(true);
        }
    });
}

Upvotes: 2

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