Java - Usuarios con diferentes acciones posibles

private class ValidateAction implements ActionListener

{

    @Override

    public void actionPerformed(ActionEvent e)

    {

        /**

         * This action makes JDialog checks

         * if the data inputted are valid

         * to login the user.

         * If positive, Login and New User

         * botton will be deactivated and

         * Logout will be activated.

         * And JDialog will be closed.

         */

        if(dlgLogin.Validated())

        {

            btLogin.setEnabled(false);

            btNewUser.setEnabled(false);

            btLougout.setEnabled(true);

            dlgLogin.dispose();

        }

    }

}

public boolean Validated()

{

    //Retrieve entered data

    String name = jtName.getText();

    String pass = jtPass.getText();

    //Check that they are not empty

    if(name.isBlank())

    {

        JOptionPane.showMessageDialog(null, "Name cannot be empty", "Validate data",

                JOptionPane.WARNING_MESSAGE);

        return false;

    }

    else if(pass.isBlank())

    {

        JOptionPane.showMessageDialog(null, "Password cannot be empty", "Validate data",

                JOptionPane.WARNING_MESSAGE);

        return false;

    }

    else

    {

        //Check if there is a user with that data in the arraylist

        User checker = new User(name, pass);

        for(User usu : users)

        {

            if(usu.equals(checker))

                return true; //User found

        }

        //If the for loop has not returned true, there is no user with that data

        JOptionPane.showMessageDialog(null, "There is no user with this data", "Validate data",

                JOptionPane.INFORMATION_MESSAGE);

        return false;

    }

}

public class User

{

    private String name;

    private String password;

    public User(String name, String password)

    {

        this.name = name;

        this.password = password;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    @Override

    public boolean equals(Object user)

    {

        if(user instanceof User)

        {

            User newUser = (User) user;

            return (name.equals(newUser.name) && password.equals(newUser.password));

        }

        else

            return false;

    }

}

public class User {

    private String name;

    private String password;

    private String type;

    public User(String name, String password) {

        this.name = name;

        this.password = password;

        type = "Estudiante";

    }

    public User(String name, String password, String type) {

        this.name = name;

        this.password = password;

        this.type = type;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    @Override

    public boolean equals(Object user) {

        if (user instanceof User) {

            User newUser = (User) user;

            return (name.equals(newUser.name) && password.equals(newUser.password) && type.equals(newUser.type));

        } else {

            return false;

        }

    }

    /**

     * @return the type

     */

    public String getType() {

        return type;

    }

    /**

     * @param type the type to set

     */

    public void setType(String type) {

        this.type = type;

    }

}

for(User usu : users)

import java.awt.FlowLayout;

import java.awt.Frame;

import java.awt.event.ActionListener;

import java.util.ArrayList;

import javax.swing.BorderFactory;

import javax.swing.BoxLayout;

import javax.swing.JButton;

import javax.swing.JDialog;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

public class CreateUserDialog extends JDialog

{

    private ArrayList<User> users;

    private JTextField jtName;

    private JTextField jtPass;

    private JButton btCreate;

    public CreateUserDialog(Frame Main, boolean modal, ArrayList<User> users, ActionListener CreateAction)

    {

        super(Main, modal);

        this.users = users;

        jtName = new JTextField(8);

        jtPass = new JTextField(8);

        btCreate = new JButton("Create User");

        btCreate.addActionListener(CreateAction);

        JPanel pn1 = new JPanel();

        pn1.add(new JLabel("Enter new user data"));

        JPanel pn2 = new JPanel();

        pn2.setLayout(new FlowLayout(FlowLayout.RIGHT));

        pn2.add(new JLabel("Name: "));

        pn2.add(jtName);

        JPanel pn3 = new JPanel();

        pn3.setLayout(new FlowLayout(FlowLayout.RIGHT));

        pn3.add(new JLabel("Password: "));

        pn3.add(jtPass);

        JPanel pn4 = new JPanel();

        pn4.add(btCreate);

        JPanel pnMain = new JPanel();

        pnMain.setLayout(new BoxLayout(pnMain, BoxLayout.Y_AXIS));

        pnMain.add(pn1);

        pnMain.add(pn2);

        pnMain.add(pn3);

        pnMain.add(pn4);

        pnMain.setBorder(BorderFactory.createEmptyBorder(25, 25, 25, 25));

        setContentPane(pnMain);

        setTitle("Create New User");

        setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);

        pack();

        setLocationRelativeTo(null);

    }

    public boolean Created()

    {

       //Retrieve entered data

        String name = jtName.getText();

        String pass = jtPass.getText();

        //Check that they are not empty

        if(name.isBlank())

        {

            JOptionPane.showMessageDialog(null, "Name cannot be empty", "Create New User",

                    JOptionPane.WARNING_MESSAGE);

            return false;

        }

        else if(pass.isBlank())

        {

            JOptionPane.showMessageDialog(null, "Password cannot be empty", "Create New User",

                    JOptionPane.WARNING_MESSAGE);

            return false;

        }

        else

        {

            //Check if there is a user with that data in the arraylist

            User checker = new User(name, pass);

            for(User usu : users)

            {

                if(usu.equals(checker))

                {

                    JOptionPane.showMessageDialog(null, "There is a user with this data", "Create New User",

                    JOptionPane.INFORMATION_MESSAGE);

                    return false; //User found

                }

            }

            users.add(new User(name, pass));

            JOptionPane.showMessageDialog(null, "New User created successfully!", "Create New User",

                    JOptionPane.INFORMATION_MESSAGE);

            return true;

        }

    }

}