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How to add ScrollBar to JList in Java?
Let us first set a JList and add items −
List<String> myList = new ArrayList<>(10); for (int index = 0; index < 20; index++) { myList.add("List Item " + index); }
Now, we will set the above list to a new list −
final JList<String> list = new JList<String>(myList.toArray(new String[myList.size()]));
Now, set the ScrollBar to JList −
JScrollPane scrollPane = new JScrollPane(); scrollPane.setViewportView(list); list.setLayoutOrientation(JList.VERTICAL);
The following is an example to add ScrollBar to JList −
Example
package my; import java.awt.BorderLayout; import java.util.ArrayList; import java.util.List; import javax.swing.JFrame; import javax.swing.JList; import javax.swing.JPanel; import javax.swing.JScrollPane; public class SwingDemo { public static void main(String[] args) { JPanel panel = new JPanel(new BorderLayout()); List<String> myList = new ArrayList<>(10); for (int index = 0; index < 20; index++) { myList.add("List Item " + index); } final JList<String> list = new JList<String>(myList.toArray(new String[myList.size()])); JScrollPane scrollPane = new JScrollPane(); scrollPane.setViewportView(list); list.setLayoutOrientation(JList.VERTICAL); panel.add(scrollPane); JFrame frame = new JFrame("Demo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.add(panel); frame.setSize(500, 250); frame.setLocationRelativeTo(null); frame.setVisible(true); } }
This will produce the following output −
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