FocusLost() is not acting the way I thought it should

Hi
I hope someone will be be able to help me with this applet. I have three input fields and when someone moves from one to the next without making an entry (and lost focus for that field), I want to 'keep' him there until he has entered the information.
When I tab or click to another field leaving an 'empty' field, nothing happens(none of my code in the focusLost() method executes).
I am posting the entire code.
Thanks for any help anybody can offer :)
Chris
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.text.DecimalFormat;
public class Wages extends JApplet
                              implements ActionListener {
     private double rate,
                              hours;
     private String name;
     private JLabel nameLabel,
                              hoursLabel,
                              rateLabel;
     private JTextField nameField,
                                   hoursField,
                                   rateField,
                                   display;
     private JButton resultsButton;
     public void init() {
          Container c = getContentPane();
          c.setLayout( new FlowLayout() );
          nameLabel = new JLabel( "Enter Name" );
          nameField = new JTextField( 25 );
          nameField.addFocusListener(
               new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                         if (nameField.getText() == "") {
                              JOptionPane.showMessageDialog( null,
                                   "Enter a name in the name field",
                                   "Warning", JOptionPane.ERROR_MESSAGE );
                              nameField.requestFocus();
                         name = nameField.getText();
          c.add( nameLabel );
          c.add( nameField );
          hoursLabel = new JLabel( "Enter hours" );
          hoursField = new JTextField( 10 );
          hoursField.addFocusListener(
               new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                         if (hoursField.getText() == "") {
                              JOptionPane.showMessageDialog( null,
                                   "Enter the hours in the field",
                                   "Warning", JOptionPane.ERROR_MESSAGE );
                              hoursField.requestFocus();
                         hours = Double.parseDouble( hoursField.getText() );
          c.add( hoursLabel );
          c.add( hoursField );
          rateLabel = new JLabel( "Enter pay rate" );
          rateField = new JTextField( 10 );
          rateField.addFocusListener(
               new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                         if (rateField.getText() == "") {
                              JOptionPane.showMessageDialog( null,
                                   "Enter the rate in the field",
                                   "Warning", JOptionPane.ERROR_MESSAGE );
                              rateField.requestFocus();
                         rate = Double.parseDouble( rateField.getText() );
          c.add( rateLabel );
          c.add( rateField );
          display = new JTextField( 35 );
          display.setEditable( false );
          c.add( display );
          resultsButton = new JButton( "Calculate" );
          resultsButton.addActionListener( this );
          c.add( resultsButton );
     public void actionPerformed( ActionEvent e ) {
          print();
          nameField.requestFocus();
     private void print() {
          DecimalFormat precisionTwo = new DecimalFormat( "0.00" );
          display.setText(
               name + " GROSS Pay " +
               precisionTwo.format( hours * rate ) +
               " NET Pay " +
               precisionTwo.format( getNet() )
          nameField.setText( "" );
          hoursField.setText( "" );
          rateField.setText( "" );
     private double getNet() {
          if (rate <= 10)
               return hours * rate;
          else if (rate <= 20)
               return hours * rate * 0.8;
          else if (rate <= 30)
               return hours * rate * 0.7;
          else
               return hours * rate * 0.6;
}

Your error has nothing to do with focusLost. Here is the problem:
public void focusLost(FocusEvent e) {
if (nameField.getText() == "") { <---- Here
You can't compare strings that way. What you're saying is "does the namefield string the same pointer as the empty string?" even if the nameField is empty, it will have a different pointer. You want nameField.getText().equals("")

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