calculation problem in my applet

[MaryEllen Volb]

HI!
Could somebody try to compile this code and maybe tell me what is wrong? It compiles and runs, but the future value calculation comes out wrong. Any help is appreciated!!!
Mary Ellen

FutureValue.java--This program will calculate the future value of an investment
at a given interest rate for a specified number of years. The program will
enable the user to enter the interest reat, investment amount, and years to
predefined text fields set by the programmer. The future value will be
displayed when the user clicks on the "calculate" button.
*/

<font size=2.5>
package Chapter9;
import Chapter8.MyFrameWithExitHandling;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.lang.Math;
import java.util.*;
import java.text.*;
public class FutureValue extends MyFrameWithExitHandling
  implements ActionListener
{
  // Declare three text fields
  private JTextField jtfld1, jtfld2, jtfld3, jtfldResult;
  // Declare "Calculate" Button
  private JButton jbtCalculate;
  // Declare two menu options
  private JMenuItem jmiCalculate, jmiAbout;
  Locale locale = Locale.ENGLISH; 
  // Main method
  public static void main(String[] args)
  {
    FutureValue frame = new FutureValue();
    //frame.pack();
    frame.setSize(225, 210);
    frame.center();
    frame.setVisible(true);
  }
  // Constructor
  public FutureValue()
  {
    setTitle("Future Value");
    setBackground(Color.yellow);
    setForeground(Color.black);
    JMenuBar jmb = new JMenuBar();
    setJMenuBar(jmb);
    // set operation menu
    JMenu operationMenu = new JMenu("Operation");
    operationMenu.setMnemonic('O');
    jmb.add(operationMenu);
    // set help menu
    JMenu helpMenu = new JMenu("Help");
    operationMenu.setMnemonic('H');
    jmb.add(helpMenu);
     // add menu items with pneumonics
    operationMenu.add(jmiCalculate= new JMenuItem("Calculate", 'C'));
    helpMenu.add(jmiAbout = new JMenuItem("About", 'A'));
    // Use panel p1 to group label fields
    JPanel p1 = new JPanel();
    p1.setLayout(new GridLayout(4,1));
    p1.add(new Label("Investment"));
    p1.add(new Label("Years"));
    p1.add(new Label("Interest Rate"));
    p1.add(new Label("Future Value"));
    // Use Panel p2 to group text fields
    JPanel p2 = new JPanel();
    p2.setLayout(new GridLayout(4,1));
    p2.add(jtfld1 = new JTextField(10));
    p2.add(jtfld2 = new JTextField(10));
    p2.add(jtfld3 = new JTextField(10));
    p2.add(jtfldResult = new JTextField(10));
    jtfldResult.setEditable(false);   // Set jtfResult noneditable
    // Use panel p2 for the button
    JPanel p3 = new JPanel();
    p3.setLayout(new FlowLayout());
    p3.add(jbtCalculate = new JButton("Calculate"));
    // Set FlowLayout for the frame and add panels to the frame
    getContentPane().setLayout(new BorderLayout());
    getContentPane().add(p1, BorderLayout.WEST);
    getContentPane().add(p2, BorderLayout.CENTER);
    getContentPane().add(p3, BorderLayout.SOUTH);
    // Register listener
    jbtCalculate.addActionListener(this);
    jmiCalculate.addActionListener(this);
    jmiAbout.addActionListener(this);
  }
  // Handle the add operation
  public void actionPerformed(ActionEvent e)
  {
    String actionCommand = e.getActionCommand();
    // Handle button events
    if (e.getSource() instanceof JButton)
    {
      calculate('n');
    }
    // Handle Menuitem events
    else if (e.getSource() instanceof JMenuItem)
    {
      if ("Calculate".equals(actionCommand))
      calculate('n');
      else if ("About".equals(actionCommand))
      JOptionPane.showMessageDialog(this, "Adapted with help",
      "For Your Information", JOptionPane.INFORMATION_MESSAGE);
    }
  }
  private void calculate(char operator)
  {
      float investmentAmount = (Float.parseFloat(jtfld1.getText().trim()));
      float yrs = (Float.parseFloat(jtfld2.getText().trim()));
      float interestRate = (Float.parseFloat(jtfld3.getText().trim()));
      float firstPart = investmentAmount * (1 + interestRate);
      double futureValue = Math.pow(firstPart,yrs);
      // Set result in TextField jtfResult
      jtfldResult.setText(String.valueOf(futureValue));
  }
}

(edited by Cindy to format code)
[This message has been edited by Cindy Glass (edited April 13, 2001).]

[MaryEllen Volb]

Gareth,
You rule!!! I mean....thanks
Mary Ellen