I am having a real hard time with this java assignment. Any help or tips will be great!!!

This is the requirements:

Final Project Overview

This document provide a sample of what is possible, and could lead to a project worth the maximum grade of 100% Something to think about!!! Do not think this is what you have to do to get the maximum number of points. It is just a sample! You are only bound by your programming ability. Please do not try and do more than you are capable of. Think, plan, design and code YOUR final project. This is your opportunity to show off your skills!

Overall Appearance

Tabs should be used in this application. At a minimum, 4 fully functioning tabs should be designed ? the Pools tab, the Hot Tubs tab, the customer tab and the Contractors tab.

General Tab

The first tab simply displays the current date. An Exit button is provided in this tab, as well as all others. (For all buttons throughout the application, mnemonic values are set.)


Customers Tab

The Customers tab allows the user to add new customers and checks for the existence of the customer.txt file in the directory where the program is located. If the file does not exist, the program tells the customer in the Message Area at the bottom. The Customer Display will give a brief explanation of the user?s options.



Add Customer

When the user clicks Add Customer, an entry window should appear. If the customer.txt file does not exist, the program tells the customer in the Message Area at the bottom.



In this window, the user can enter customers; the information entered will be stored as entered.



Clicking Add Customer will attempt to write the information to customer.txt. The user should receive an indication when a customer is added successfully.



After a customer has been added and the Customers window is closed, the user can click Refresh to refresh the Customer Display area, which will display the contents of the customer.txt file.



Contractor Tab

The Contractor tab functions in exactly the same way as the Customers tab. The filename for contractors is contract.txt.


Pools Tab

The Pools tab should perform a calculation.



After a length, width, and depth have been entered, the user can click Calculate Volume and the program will display the calculated volume (length * width * depth in cubic feet).



Exception handling is used here to catch exceptions, including incomplete forms, invalid entries, and combinations of these.

Incomplete forms:


Invalid input:



Combination invalid input/incomplete input:



Hot Tubs Tab

The Hot Tubs tab allows for round and oval tubs? volumes to be calculated.


Round Tub

When Round Tub is selected, the user cannot fill out the width field since we?re dealing with a circle. After filling out the length and depth fields, the Calculate Volume button will display the volume (Pi * ((length/2)^2) * depth). The width is automatically set to the same value as the length, and the user is informed.

Again, exception handling is used here.




Oval Tub

When Oval Tub is selected, the width field is opened up:



The formula used to calculate the volume is (Pi * (length * width)^2) * depth.

As with the Pools tab, the same error messages should be displayed in case of no input/invalid values.

Temp Calc Tab

The Temp Calc tab offers a temperature converter (Celsius <-> Fahrenheit).



The user enters a temperature, and selects either C or F. The field after the Result display will display the opposite (if C is selected, field will display F; if F is selected, field will display C).


No input:



Customer Comment section. The customer should be able to type a comment in and submit it.


This is what I have so far:

import java.awt.*;

import javax.swing.*;

public class FinalProject extends JFrame
{
private JLabel textPrompt;
private JTextArea inputText;
private JLabel keyPrompt;
private JTextField inputKey;
Container container;

public FinalProject()
{
super( "Final Project " );

JTabbedPane tab = new JTabbedPane();
// constructing the first panel

JLabel l1 = new JLabel( "Pool" );
JPanel p1 = new JPanel();
tab.addTab( "Pool", null, p1, " Pool" );

// constructing the second panel
JLabel l2 = new JLabel("Hot Tube");
JPanel p2 = new JPanel();

//Pi * (length * width)^2) * depth

tab.addTab( "Hot Tube", null, p2, " Hot Tube" );

// constructing the third panel

JLabel l3 = new JLabel( " Temperature Change!" );
JPanel p3 = new JPanel();
tab.addTab( "Temperature Change", null, p3, " Temperature Change" );

// constructing the fourth panel

JLabel l4 = new JLabel( "Customer" );
JPanel p4 = new JPanel();
tab.addTab( "Customer", null, p4, " Customer" );

// constructing the fifth panel

JLabel l5 = new JLabel( "General" );
JPanel p5 = new JPanel();
tab.addTab( "General", null, p5, " General" );

//constructing the last panel

JLabel l6 = new JLabel( "Manufacture");
JPanel p6 = new JPanel();
tab.addTab( "Manufacture", null, p6, " Manufacture" );

//constructing the Comment panel

JLabel l7= new JLabel("Customer Comments?");
JPanel p7 = new JPanel();
tab.addTab ("Customer Comments?",null,p7,"Customer Comments?");
textPrompt = new JLabel("Customer Comments here please!");
inputText = new JTextArea(5, 15);
inputText.setLineWrap(true);
inputText.setWrapStyleWord(true);

//instantiate two panels, one for input and output
Panel inputPanel = new Panel();

//add components to window
container = getContentPane();

//use borderlayout to position our two i/o panels
container.setLayout(new BorderLayout());
inputPanel.setLayout(new FlowLayout());

//add components to panels
inputPanel.add(textPrompt);
inputPanel.add(inputText);

//add panels to our primary borderlayout
add(inputPanel, BorderLayout.NORTH);

// add JTabbedPane to container
getContentPane().add( tab );

setSize( 400, 250 );
setVisible( true );
}

public static void main( String args[] )
{
FinalProject demo = new FinalProject();
demo.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
}

}