Thread: Help..Simple GUI needs help,can not sort out these red lines..

//Customer Class
public class Customer {
private String name;
private String address;
private double balance;
public Customer(String name, String address, double balance) {
super();
this.name = name;
this.address = address;
this.balance = balance;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public double getBalance() {
return balance;
}
public void setBalance(double balance) {
this.balance = balance;
}
@Override
public String toString() {
return "Customer [address=" + address + ", balance=" + balance
+ ", name=" + name + "]";
}



}


import java.awt.Frame;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JTextField;

import net.miginfocom.swing.MigLayout;


public class CustomerDialog extends JDialog {
private JLabel nameLabel = new JLabel("Name");
private JTextField nameTextField = new JTextField(20);
private JLabel addressLabel = new JLabel("Address");
private JTextField addressTextField = new JTextField(20);
private JLabel balanceLabel = new JLabel("Balance");
private JTextField balanceTextField = new JTextField(20);

private JButton okButton = new JButton("Ok");
private JButton cancelButton = new JButton("Cancel");
private Customer customer;

public CustomerDialog(Frame owner,boolean modal){
super(owner,modal);
this.setLayout(new MigLayout());
this.add(nameLabel);
this.add(nameTextField,"wrap");
this.add(addressLabel);
this.add(addressTextField,"wrap");
this.add(balanceLabel);
this.add(balanceTextField,"wrap paragraph");
this.add(okButton,"split 2,span 2,tag ok");
this.add(cancelButton,"tag cancel");

okButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
String name = new TextField.getText();
String address = new TextField.getText();
String balanceAsString = balanceTextField.getText();
double balance = Double.parseDouble(balanceAsString);
customer = new Customer(name,address,balance);
CustomerDialog.this.setVisible(false);
}
});



}
public Customer getCustomer()
{
return customer;
}
}



import java.util.ArrayList;
import java.util.List;


import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;

public class CustomerTableModel extends AbstractTableModel {
private static final long serialVersionUID = 1L;
private List<Customer>customers;
private ArrayList<Customer> customers1 = new ArrayList <Customer> ();

private CustomerTableModel tableModel = new CustomerTableModel(customers);
private JTable table = new JTable(tableModel);
private JScrollPane scrollpane = new JScrollPane(table);

public CustomerTableModel(List<Customer>customers) {
this.customers = customers;
}
public int getColumnCount() {
return 3;
}
public int getRowCount() {
return customers.size();
}
public Object getValueAt(int rowIndex, int columnIndex) {
Customer customer = customers.get(rowIndex);
Object result;
if(columnIndex == 0){
result = customer.getName();
}
else if(columnIndex == 1){
result = customer.getAddress();
}
else {
result = customer.getBalance();

}
return result;
}


}


import java.awt.List;
import java.awt.event.ActionListener;
import java.util.ArrayList;

import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.UIManager;

import net.miginfocom.swing.MigLayout;


public class MainWindow extends JFrame {
List<Customer> customer = new ArrayList<Customer>();
private JMenuBar mainMenuBar = new JMenuBar();
private JMenuBar menuBar = new JMenuBar();
private JMenu customerMenu = new JMenu("Customer");
private JMenuItem newCustomerItem = new JMenuItem("New..");

public MainWindow() {
this.setLayout(new MigLayout());
this.setJMenuBar(mainMenuBar);
mainMenuBar.add(customerMenu);
customerMenu.add(newCustomerItem);


}

/**
* @param args
*/
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAn dFeelClassName());
}
catch (Exception ignored){

}

MainWindow window = new MainWindow();
window.setDefaultCloseOperation(EXIT_ON_CLOSE);
window.setLocationRelativeTo(null);
window.setSize(500,400);
window.setVisible(true);

// TODO Auto-generated method stub

}

}

Please copy the full text of the error messages and paste them here.
It's hard to see the red lines from here.

Please Edit your post and wrap your code with[code=java]<YOUR CODE HERE>[/code] to get highlighting