disable horizontal scroll in jscrollpane

Question

I have a JScrollPane with FlowLayout that I want to have a fixed width. It should be scrolling vertically only, and the contents should be rearranged automatically when I resize the window. I think there should be a method like setEnableHorizontalScroll(false) but can't find it.

Is there any easy way to do this?

Answer 1

You can use:

import static javax.swing.ScrollPaneConstants.*;
// ...
JScrollPane.setHorizontalScrollBarPolicy(HORIZONTAL_SCROLLBAR_NEVER);

...but this just prevents the horizontal scrollbar from ever being shown.

To get the contents to rearrange automatically will depend on what the content is. A JTextPane or JEditorPane will do this for you automatically (without the need for the above code).

Answer 2

Finally I found out how, please see this very short example, no advanced tricks needed:

public class MyTest extends JFrame {

    public static void main(String[] args) {
        MyTest test = new MyTest();
        test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        test.setSize(300, 200);
        test.setVisible(true);
    }

    public MyTest() {
        String[] data = {
            "Arlo", "Cosmo", "Elmo", "Hugo",
            "Jethro", "Laszlo", "Milo", "Nemo",
            "Otto", "Ringo", "Rocco", "Rollo"
        };
        JList list = new JList(data);
        list.setLayoutOrientation(JList.HORIZONTAL_WRAP);
        list.setVisibleRowCount(0);
        JScrollPane scroll = new JScrollPane(list);
        this.add(scroll);
    }
}

Adapted from Sun's tutorial