JScrollPane not showing in JList

Question

listModel = new DefaultListModel();
        jList2 = new JList(listModel);
        scrollPane = new JScrollPane(jList2, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER); The above still doesn't show the scrollPane. Any suggestions why?

Answer 1

works OK in this, using a null layout
import javax.swing.*;
import java.awt.*;
class Testing
  public void buildGUI()
    DefaultListModel lm = new DefaultListModel();
    final JList list = new JList(lm);
    JScrollPane sp = new JScrollPane(list,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                                         JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
    for(int x = 0; x < 100; x++) lm.addElement(""+x);
    sp.setBounds(0,0,392,366);
    JFrame f = new JFrame();
    f.getContentPane().setLayout(null);
    f.getContentPane().add(sp);
    f.setSize(400,400);
    f.setLocationRelativeTo(null);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
  public static void main(String[] args)
    SwingUtilities.invokeLater(new Runnable(){
      public void run(){
        new Testing().buildGUI();
}