Make JScrollPane to always show scroll bar in Java

import java.awt.Dimension;
import java.awt.FlowLayout;
/*from ww  w.jav  a  2  s  . c o m*/
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

public class Main {
  public static void main(String[] args) {
    JFrame frame = new JFrame("JTextArea Test");
    frame.setLayout(new FlowLayout());
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
    
    JTextArea textAreal = new JTextArea("from java2s.com", 5, 10);
    textAreal.setPreferredSize(new Dimension(100, 100));
    
    JScrollPane scrollPane = new JScrollPane(textAreal, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
        JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);


    frame.add(scrollPane);
    frame.pack();
    frame.setVisible(true);
  }
}