RegisterForm & MenuForm

[RegisterForm]
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.sql.SQLException;
import java.util.Vector;

import javax.swing.ButtonGroup;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableModel;


public class RegisterForm extends JFrame implements ActionListener{

	JPanel paneljudul = new JPanel(new FlowLayout());
	JPanel panelbutton = new JPanel(new GridLayout(2,1));
	JPanel paneltengah = new JPanel(new GridLayout(2, 1));
	JPanel panelform = new JPanel(new GridLayout(8, 2));
	JPanel panelgender = new JPanel(new GridLayout(1, 2));

	JLabel title = new JLabel("Register");
	private JTextField txtid;
	JTextField txtname = new JTextField();
	JTextField txtuser = new JTextField();
	JTextField txtemail = new JTextField();
	JTextField txtphone = new JTextField();
	JTextField txtaddress = new JTextField();
	JPasswordField txtpass = new JPasswordField();
	JRadioButton female = new JRadioButton("Female");
	JRadioButton male = new JRadioButton("Male");
	ButtonGroup bg = new ButtonGroup();
	JButton insert = new JButton("Insert");
	JButton cancel = new JButton("Cancel");

	Connect con = new Connect();

	public void AutoIDUser() {
		try {
			con.rs = con.st.executeQuery("select count(UserID) from MsUser");
			con.rs.next();
			int JumlahData = con.rs.getInt(1);
			if (JumlahData == 0){
	        	 txtid.setText("U001");
			}
			else if (JumlahData < 9) {
				con.rs = con.st.executeQuery("select max(UserID) from MsUser");
				while (con.rs.next()){
					String UserID = con.rs.getString(1);
					String AngkaUserID = UserID.substring(3,4);
					int UserIDBaru = Integer.parseInt(AngkaUserID)+1;
					txtid.setText(String.valueOf("U00"+UserIDBaru));
				}
			}
			else if (JumlahData < 99) {
        		con.rs = con.st.executeQuery("select max(UserID) from MsUser");
            	while (con.rs.next()){
            		String UserID = con.rs.getString(1);
            		String AngkaUserID = UserID.substring(2,4);
            		int UserIDBaru = Integer.parseInt(AngkaUserID)+1;
            		txtid.setText(String.valueOf("U0"+UserIDBaru));
            	}
            }
			else if (JumlahData >= 99) {
        		con.rs = con.st.executeQuery("select max(UserID) from MsUser");
            	while (con.rs.next()){
            		String UserID = con.rs.getString(1);
            		String AngkaUserID = UserID.substring(1,4);
            		int UserIDBaru = Integer.parseInt(AngkaUserID)+1;
            		txtid.setText(String.valueOf("U"+UserIDBaru));
            	}
			}
		} catch (SQLException e) {
 			e.printStackTrace();
 		}
	}

	public void setUI(){

		paneljudul.add(title);
		add(paneljudul, "North");

		paneltengah.add(panelform);
		add(paneltengah, "Center");

		panelgender.add(male);
		panelgender.add(female);
		bg.add(male);
		bg.add(female);

		panelform.add(new JLabel("User ID"));
		panelform.add(txtid); txtid.setEnabled(false);
		panelform.add(new JLabel("Username"));
		panelform.add(txtuser);
		panelform.add(new JLabel("Password"));
		panelform.add(txtpass);
		panelform.add(new JLabel("Name"));
		panelform.add(txtname);
		panelform.add(new JLabel("Email"));
		panelform.add(txtemail);
		panelform.add(new JLabel("Phone Number"));
		panelform.add(txtphone);
		panelform.add(new JLabel("Address"));
		panelform.add(txtaddress);
		panelform.add(new JLabel("Gender"));
		panelform.add(panelgender);

		panelbutton.add(insert);
		panelbutton.add(cancel);
		add(panelbutton, "South");

		 // INI DIGANTI

		//table.addMouseListener(this);
		// SET ACTION LISTENER
		insert.addActionListener(this);
		cancel.addActionListener(this);
		// END SET ACTION LISTENER


	}

	public RegisterForm() {
		setUI();
		setSize(450, 500);
		setLocationRelativeTo(null);
		setDefaultCloseOperation(DISPOSE_ON_CLOSE);
		setVisible(true);
		AutoIDUser();
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		if(e.getSource() == insert){
			String userid = txtid.getText();
			String userfullname = txtname.getText();
			String username = txtuser.getText();
			String useremail = txtemail.getText();
			String userphone = txtphone.getText();
			String useraddress = txtaddress.getText();
			String userpass = txtpass.getText();
			String usergender;
			if(male.isSelected()==true){
				usergender = "Male";
			}
			else{
				usergender = "Female";
			}
			if(txtuser.getText().equals("")){
				JOptionPane.showMessageDialog(null, "USERNAME is blank");
				txtuser.requestFocus();
			}else if(username.length() > 15 || username.length() < 5 ) {
				JOptionPane.showMessageDialog(null,"Username length must be between 5 and 15 characters.","Information",JOptionPane.INFORMATION_MESSAGE);
				txtuser.requestFocus(true);
			}else if(txtemail.getText().equals("")){
				JOptionPane.showMessageDialog(null, "EMAIL is blank");
				txtemail.requestFocus();
			}else if(txtname.getText().equals("")){
				JOptionPane.showMessageDialog(null, "NAME is blank");
				txtname.requestFocus();
			}else if(txtpass.getText().equals("")){
				JOptionPane.showMessageDialog(null, "PASSWORD is blank");
				txtpass.requestFocus();
			}else if(userpass.length() > 15 || userpass.length() < 5 ) {
				JOptionPane.showMessageDialog(null,"Password length must be between 5 and 15 characters.","Information",JOptionPane.INFORMATION_MESSAGE);
				txtpass.requestFocus(true);
			}else if(txtaddress.getText().equals("")){
				JOptionPane.showMessageDialog(null, "ADDRESS is blank");
				txtaddress.requestFocus();
			}else if(txtphone.getText().equals("")){
				JOptionPane.showMessageDialog(null, "PHONE is blank");
				txtphone.requestFocus();
			}else{
				con.executeInsertUser(username, userpass, userfullname, useremail, userphone, useraddress, usergender);
				JOptionPane.showMessageDialog(null, "Input Success");
				new MainForm();
				this.dispose();
			}
		}else if(e.getSource() == cancel){
			new MenuForm();
			this.dispose();
		}
	}
}

[MenuForm]
import java.awt.Color;
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;


public class MenuForm extends JFrame implements ActionListener{
	JPanel panellogin = new JPanel(new GridLayout(2,2, 10,10));
	JPanel panelbutton = new JPanel(new GridLayout(2,1));
	JTextField txtuser = new JTextField();
	JPasswordField txtpass = new JPasswordField();
	JButton login = new JButton("Login");
	JButton register = new JButton("Register");
	JDesktopPane pane = new JDesktopPane();

	public void setUI(){
		JLabel image = new JLabel("");
		ImageIcon icon = new ImageIcon("images/bluejack.jpg");
		image.setIcon(icon);

		add(image, "North");

		panelbutton.add(login);
		panelbutton.add(register);
		add(panelbutton, "South");
		login.addActionListener(this);
		register.addActionListener(this);

		add(new JLabel("  "), "West");
		add(new JLabel("  "), "East");
	}

	public MenuForm() {
		setUI();
		setTitle("Bluejack Boutique");
		setSize(300, 220); // setSize(w, h);
		setLocationRelativeTo(null);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		setVisible(true);
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		if(e.getSource() == login){
			//LoginForm login = new LoginForm();
			new LoginForm();
			this.dispose();
			}else if(e.getSource() == register){
				new RegisterForm();
				this.dispose();
				//JOptionPane.showMessageDialog(null, "Username dan Password SALAH");
			}

		}
	}