How to set Row Header View for JScrollPane in Java?

Set Row Header View using the setRowHeaderView() method. Let us first create a KScrollPane and set a list −

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);

Now, set the row header view −

scrollPane.setRowHeaderView(new JLabel("All List Items "));

The following is an example to set row header view for JScrollPane in Java −

Example

package my; import java.awt.BorderLayout; import java.util.ArrayList; import java.util.List; import javax.swing.JFrame; import javax.swing.JLabel; 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 ArrayListlt;>(10);       for (int index = 0; index lt; 20; index++) {          myList.add("List Item " + index);       }       final JListlt;String> list = new JListlt;String>(myList.toArray(new String[myList.size()]));       JScrollPane scrollPane = new JScrollPane();       scrollPane.setViewportView(list);       scrollPane.setRowHeaderView(new JLabel("All List Items "));       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);    } }

Output