Getting Scroll bar to Return to Top.

Question

This is my first time messing with Swing (always thought the GUI guys didn't know how to program) anyway, it's kinda fun to add a nice interface to the rest of my code. I send a command to something and get a return vector back, however, when I reprint all the data the scroll bar ends up at the bottom instead of the top where the new information is. Here's my code. The last method is the one that does the Text Area updating.
package com.ibm.SvcCliSimulator.RMI;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class RMIUI extends JFrame {
     JPanel contentPane;
     JPanel jPanel1 = new JPanel();
     JLabel inputLabel = new JLabel();
     JTextField textField = new JTextField();
     JButton jButton1 = new JButton();
     JScrollPane jScrollPane1 = new JScrollPane();
     static JTextArea returnInfo = new JTextArea();
     GridBagLayout gridBagLayout1 = new GridBagLayout();
     RMIInterface cmdSender;
     Vector aReturnVec = new Vector();
     public RMIUI(RMIInterface cmdSdr) {
          enableEvents(AWTEvent.WINDOW_EVENT_MASK);
          try {
               jbInit();
               cmdSender = cmdSdr;
          catch(Exception e) {
               e.printStackTrace();
     private void jbInit() throws Exception  {
          //setIconImage(Toolkit.getDefaultToolkit().createImage(Frame1.class.getResource("[Your Icon]")));
          contentPane = (JPanel) this.getContentPane();
          contentPane.setLayout(gridBagLayout1);
          this.setSize(new Dimension(550, 450));
          this.setTitle("Frame Title");
          jPanel1.setOpaque(false);
          jPanel1.setLayout(null);
          inputLabel.setOpaque(true);
          inputLabel.setText("Enter Command:");
          inputLabel.setBounds(new Rectangle(6, 12, 100, 26));
          textField.setText("svinfo -x list -o");
          textField.setBounds(new Rectangle(106, 11, 271, 28));
          jScrollPane1.setBounds(new Rectangle(8, 64, 532, 374));
          jScrollPane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
          returnInfo.setBackground(new Color(224, 208, 204));
          returnInfo.setEditable(false);
          jButton1.setText("Send Command");
          jButton1.setBounds(new Rectangle(388, 11, 150, 30));
          jButton1.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    String cmd = textField.getText();
                    try {
                         aReturnVec = cmdSender.sendCommand("11.111.11.1", cmd);
                         printVector(aReturnVec, cmd);
                    catch (Exception ex){
                         System.out.println(ex);
          textField.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    String cmd = textField.getText();
                    try {
                         aReturnVec = cmdSender.sendCommand("11.111.11.1", cmd);
                         printVector(aReturnVec, cmd);
                    catch (Exception ex){
                         System.out.println(ex);
          jPanel1.add(inputLabel, null);
          jPanel1.add(textField, null);
          jPanel1.add(jScrollPane1, null);
          jScrollPane1.getViewport().add(returnInfo, null);
          contentPane.add(jPanel1,  new GridBagConstraints(0, 0, 1, 1, 1.0, 1.0
                    ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(6, 2, 3, 3), 544, 440));
          jPanel1.add(jButton1, null);
     protected void processWindowEvent(WindowEvent e) {
          super.processWindowEvent(e);
          if (e.getID() == WindowEvent.WINDOW_CLOSING) {
                 System.exit(0);
     public static void printVector(Vector v, String cmd){
          String old = returnInfo.getText();
          String s = cmd + "\n";
          for (int i=0; i<v.size(); i++)
               s += (v.elementAt(i) + "\n");
          s += "\n\n" + old;
          returnInfo.setText(s);
}

Answer 1

Thanks a bunch....
returnInfo.setCaretPosition(0);
worked just fine. As I said, it's my first outting into this Swing deal.