Java Swing How to - Create JList and always show the scroll bar

Question

We would like to know how to create JList and always show the scroll bar.

Answer

import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JRootPane;
import javax.swing.JScrollPane;
//from www. j  ava 2 s.  c  om
public class Main {
  public static void main(String[] args) {
    String subject[] = { "Math", " English", "SQL", "   java", "  c ", " c++ ",
        " cobol ", "this is a test" };
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JList<String> list = new JList<String>(subject);
    JScrollPane s = new JScrollPane(list);
    s.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
    s.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);

    f.getRootPane().setWindowDecorationStyle(JRootPane.PLAIN_DIALOG);
    f.add(s);
    f.setSize(300, 300);
    f.setVisible(true);
  }
}