Thread: Understanding Classes and Objects

Hey everyone. Before I post my error and my code I just wanted to explain my situation and say thanks for the help. I am in college and this is a project assignment. I don't want anyone to help me for a second, I just need help in understanding what's going on. We have recently moved into "Classes and Objects". If you need anymore information after I post my code, I will gladly supply it. Thanks for helping!

/**************************************************************************************
* ------------------------------------------------------------------------------------
* File name: BookOrder.java
* Project name: CSCI 1250 Project 4
* ------------------------------------------------------------------------------------
* Author Name: Austin Stanley
* Author E-mail: 
* Course-Section: CSCI-1250-001
* Creation Date: 11/08/2012
* Date of Last Modification: 11/08/2012
* ------------------------------------------------------------------------------------
*/
import java.util.Scanner; //Allow the user input from keyboard
 
import java.text.DecimalFormat; //Allowing us to limit the Decimal Place
 
/**************************************************************************************
* Class Name: BookOrder <br>
* Class Purpose: The class for our driver program <br>
*
* <hr>
* Date created: 11/08/2102 <br>
* Date last modified: 11/08/2012
* @author Austin Stanley
*/
 
public class BookOrder //The beginning of the BookOrder class
{
	//**********************CLASS ATTRIBUTES****************************
	private String author; //Establishing the author variable
	private String title; //Establishing the title variable
	private int quantity; //Establishing the quantity variable
	private double costPerBook; //Establising the costPerBook variable
	private String orderDate; // Establishing the orderDate variable
	private double weight; //Establishing the weight variable
	private char shipType; //Establishing the shipType variable
 
	//**********************CLASS METHODS*******************************
	//-----------------------CONSTRUCTORS-------------------------------
	public BookOrder()
	{
		setAuthor(" ");
		setTitle(" ");
		setQuantity(0);
		setCostPerBook(0.0);
		setOrderDate(" ");
		setWeight(0.0);
		setShipType(' ');
	}//end BookOrder
 
	public BookOrder(String authorName, String titleName)
	{
		setAuthor(authorName);
		setTitle(titleName);
	}//end BookOrder(String authorName, String titleName)
 
	publc BookOrder(String authorName, String titleName, int quantityAmmount, double costPerBookAmmount, String orderDateName, double weightAmmount, char shipTypeLetter)
	{
		setAuthor(authorName);
		setTitle(titleName);
		setQuantity(quantityAmmount);
		setCostPerBook(costPerBookAmmount);
		setOrderDate(orderDateName);
		setWeight(weightAmmount);
		setShipType(shipTypeLetter);
 
	}//end publc BookOrder(String authorName, String titleName, int quantityAmmount, double costPerBookAmmount, String orderDateName, double weightAmmount, char shipTypeLetter)
 
	//--------------------------SETTERS---------------------------------
	public void setAuthor(String authorName)
	{
		authorName = authorName;
	}//end setAuthor
	public void setTitle(String titleName)
	{
		titleName = titleName;
	}//end setTitle
	public void setQuantity(int quantityAmmount)
	{
		quantityAmmount = quantityAmmount;
	}//end setQuantity
	public void setCostPerBook(double costPerBookAmmount)
	{
		costPerBookAmmount = costPerBookAmmount;
	}//end setCostPerBook
	public void setOrderDate(String orderDateName)
	{
		orderDateName = orderDateName;
	}//end setOrderDate
	public void setWeight(double weightAmmount)
	{
		weightAmmount = weightAmmount;
	}//end setWeight
	public void setShipType(char shipTypeLetter)
	{
		shipTypeLetter = shipTypeLetter;
	}//end setShipType
	//--------------------------GETTERS---------------------------------
	public String getAuthor()
	{
		return authorName;
	}//end getAuthor
	public String getTitle()
	{
		return titleName;
	}//end getTitle
	public int getQuantity()
	{
		return quantityAmmount;
	}//end getQuantity
	public double getCostPerBook()
	{
		return costPerBookAmmount;
	}//end getCostPerBook
	public String getOrderDate()
	{
		return orderDateName;
	}//end getOrderDate
	public double getWeight()
	{
		return weightAmmount;
	}//end getWeight
	public char getShipType()
	{
		return shipTypeLetter;
	}//end getShipType
	//---------------------OTHER CLASS METHODS--------------------------
 
 
}//end BookOrder