how do i write code to get text from amountField and convert to a double : I have created a bank account class and a bank account GUI with with amountField to show the amount i wish to withdraw and deposit.
using public void actionPerformed(ActionEvent e) function how can i write code to get text from amountField and convert to a double.
i want to input account details and be able to withdraw and deposit whilst storing values within a string

write event handler for deposit button 
write event handler for withdraw button 


public class BankAccountGUI extends JFrame implements ActionListener
{
	
	private Label amountLabel = new Label("Amount");
	private JTextField amountField = new JTextField(5);
	private JButton depositButton = new JButton("DEPOSIT");
	private JButton withdrawButton = new JButton("WITHDRAW");
	private Label balanceLabel = new Label("Starting Balance = 0" );
	
	private JPanel topPanel = new JPanel();
	private JPanel bottomPanel = new JPanel();
	private JPanel middlePanel = new JPanel();
      
	
        BankAccount myAccount = new BankAccount("James","12345");
      
	// declare a new BankAccount object (myAccount) with account number and name of your choice here
	
	
	public BankAccountGUI()
	{
		setTitle("BankAccount GUI");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	
		setSize(340, 145);
		setLocation(300,300);
		depositButton.addActionListener(this);
		withdrawButton.addActionListener(this);
		
		topPanel.add(amountLabel);
		topPanel.add(amountField);
		bottomPanel.add(balanceLabel);
		middlePanel.add(depositButton);
                middlePanel.add(withdrawButton);
		
		
		add (BorderLayout.NORTH, topPanel);
		add(BorderLayout.SOUTH, bottomPanel);
                add(BorderLayout.CENTER, middlePanel);
		
		setVisible(true);
	}
	
 
	public void actionPerformed(ActionEvent e)
	{
             
       }
	}