Need help with Calling objects

Question

I have created an object named "user" and I currently have 1 Frame in my program. The first frame is called "LogonFrame" and the second is called "UserDataFrame".
In the main method of the application I declare a "User" object as user and then call LogonFrame to retreive the logon_name and password from the user. The logon_name and password will be placed in the User object to be accessed throughout the application.
When I compile the application I receive the following error message:
Error: (85) variable user not found in class GL2.LogonFrame
*I know that 85 is the line number that the error is located
*GL2 is the name of the package.
Has anyone ever encountered this error before, and if so how can I fix this error.
*Listed below is the code used in the User object if it helps at all.
Jason Franz
// Copyright (c) 2003 Jason T. Franz
package GL2;
* A Class class.
* <P>
* @author Jason T. Franz
public class User extends Object {
private static int user_id;
private static String first_name;
private static String last_name;
public static void User(){
user_id = 0;
first_name = "";
last_name = "";
//sets the user ID
public static void setUserID(int newID){
user_id = newID;
//Returns the User ID
public static int getUserID(){
return user_id;
//Sets the User First Name
public static void setFirstName(String newFirstName){
first_name = newFirstName;
//Gets the Users First Name
public static String getFirstName(){
return first_name;
//Sets the Users Last Name
public static void setLastName(String newLastName){
last_name = newLastName;
public static String getLastName(){
return last_name;
//Resets all data in the User Class
public static void reset(){
user_id = 0;
first_name = "";
last_name = "";

Answer 1

The code below is a small portion of the program.
If it helps at all I am useing Oracle JDeveloper version 3.2.3 with JDK1.2.2_JDeveloper
This section is the User object
// Copyright (c) 2003 Jason T. Franz
package GL2;
* A Class class.
* <P>
* @author Jason T. Franz
public class User extends Object {
  private String first_name;
  private String last_name;
  public User(){
    first_name = "Jason";
    last_name = "Franz";
  //Sets the User First Name
  public void setFirstName(String newFirstName){
    first_name = newFirstName;
  //Gets the Users First Name
  public String getFirstName(){
    return first_name;
  //Sets the Users Last Name
  public void setLastName(String newLastName){
    last_name = newLastName;
  public String getLastName(){
    return last_name;
  //Resets all data in the User Class
  public void reset(){
    first_name = "";
    last_name = "";
    logon_name = "";
    user_password = "";
}Here is the main method.
// Copyright (c) 2003 Jason T. Franz
package GL2;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
* GL2.DevilsHead
* <P>
* @author Jason T. Franz
public class DevilsHead {
  public User user = new User();
   * Constructor
  public DevilsHead() {
    AddUserFrame frame = new AddUserFrame();
    //Center the window
    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    Dimension frameSize = frame.getSize();
    if (frameSize.height > screenSize.height) {
      frameSize.height = screenSize.height;
    if (frameSize.width > screenSize.width) {
      frameSize.width = screenSize.width;
    frame.setLocation((screenSize.width - frameSize.width)/2, (screenSize.height - frameSize.height)/2);
    frame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } });
    frame.setVisible(true);
   * main
   * @param args
  public static void main(String[] args) {
    try  {
      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
    catch (Exception e) {
      e.printStackTrace();
    new DevilsHead();
}and here is the Frame which calls the user object to display the Information.
// Copyright (c) 2003 Jason T. Franz
package GL2;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
* A Swing-based top level window class.
* <P>
* @author Jason T. Franz
public class AddUserFrame extends JFrame {
  BorderLayout borderLayout1 = new BorderLayout();
  JPanel jPanel1 = new JPanel();
  Button button1 = new Button();
   * Constructs a new instance.
  public AddUserFrame() {
    super();
    try  {
      jbInit();
    catch (Exception e) {
      e.printStackTrace();
   * Initializes the state of this instance.
  private void jbInit() throws Exception {
    this.getContentPane().setLayout(borderLayout1);
    this.setSize(new Dimension(400, 300));
    button1.setLabel("button1");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
    this.setTitle("Add a User");
    this.getContentPane().add(jPanel1, BorderLayout.CENTER);
    jPanel1.add(button1, null);
  void button1_actionPerformed(ActionEvent e) {
    System.out.println(user.getFirstName());
    System.out.println(user.getLastName());
}The error I receive is
Error: (51) variable user not found in class GL2.AddUserFrame