Problems/questions with packages

Question

I am having problems with an exercise I am completing from my java tutorial concerning packages. I have created the folder "mypackage" on drive C, and added a classpath reference to this folder in autoexec.bat.
My source file Item.java begins with the following line:
package mypackage;
The source compiles without error messages, but the item.class file it creates appears in the working directory not the "mypackage" directory. It is my understanding that the package name is analagous to the folder names on the machine. Shouldn't the class be under the appropriate folder named for the package? What am I missing here?
Thanks,
Mike

Answer 1

Gaurav,
I was able to create the packages as you suggested, but the program which uses those packages seems to be having problems I am using package j21work.mypackage
for the item and storefront, but when I try to compile the giftshop program which accesses those two modules, I get all sorts of errors like the following:
^
GiftShop.java:15: cannot resolve symbol
symbol : method getName ()
location: class Item
"\nName: " + show.getName() +
^
GiftShop.java:16: cannot resolve symbol
symbol : method getRetail ()
location: class Item
"\nRetail Price: $" + show.getRetail() +
^
GiftShop.java:17: cannot resolve symbol
symbol : method getPrice ()
location: class Item
"\nPrice: $" + show.getPrice() +
^
GiftShop.java:18: cannot resolve symbol
symbol : method getQuantity ()
location: class Item
"\nQuantity: " + show.getQuantity());
^
13 errors
The programs are examples from the book Java 2 in 21 days. The only changes I have made are to point to different packages for the package and import statements. I have printed the code below. Can you please tell me where my problem is? I'm stumped.
item.java
package j21work.mypackage;
import java.util.*;
public class Item implements Comparable {
private String id;
private String name;
private double retail;
private int quantity;
private double price;
Item(String idIn, String nameIn, String retailIn, String quanIn) {
id = idIn;
name = nameIn;
retail = Double.parseDouble(retailIn);
quantity = Integer.parseInt(quanIn);
if (quantity > 400)
price = retail * .5D;
else if (quantity > 200)
price = retail * .6D;
else
price = retail * .7D;
price = Math.floor( price * 100 + .5 ) / 100;
public int compareTo(Object obj) {
Item temp = (Item)obj;
if (this.price < temp.price)
return 1;
else if (this.price > temp.price)
return -1;
return 0;
public String getId() {
return id;
public String getName() {
return name;
public double getRetail() {
return retail;
public int getQuantity() {
return quantity;
public double getPrice() {
return price;
Storefront.java
package j21work.mypackage;
import java.util.*;
public class Storefront {
private LinkedList catalog = new LinkedList();
public void addItem(String id, String name, String price,
String quant) {
Item it = new Item(id, name, price, quant);
catalog.add(it);
public Item getItem(int i) {
return (Item)catalog.get(i);
public int getSize() {
return catalog.size();
public void sort() {
Collections.sort(catalog);
giftshop.java
import j21work.mypackage.*;
public class GiftShop {
public static void main(String[] arguments) {
Storefront store = new Storefront();
store.addItem("C01", "MUG", "9.99", "150");
store.addItem("C02", "LG MUG", "12.99", "82");
store.addItem("C03", "MOUSEPAD", "10.49", "800");
store.addItem("D01", "T SHIRT", "16.99", "90");
store.sort();
for (int i = 0; i < store.getSize(); i++) {
Item show = (Item)store.getItem(i);
System.out.println("\nItem ID: " + show.getId() +
"\nName: " + show.getName() +
"\nRetail Price: $" + show.getRetail() +
"\nPrice: $" + show.getPrice() +
"\nQuantity: " + show.getQuantity());