Package/Classpath problem with 1.4

Question

I've two classes. one class has a package structure and other does not. when i try to compile the class (having package structure) which has a reference to other class (which doesn't have package structure), I get error "cannot resolve symbol"
eg.
package com.hamilsci;
public class A {
public A() {
B obj = new B();
class A is in dir /usr/local/java/examples
public class B {
public B() { }
class B is in dir /usr/local/java/helperclasses and doesnot have package structure
When I tried to compile A without the package statement, everything works fine. But when I add package structure to Class A, I cannot compile . The error Message is :cannot resolve symbol
symbol : class B
location: class com.hamilsci.A
B obj = new B();
^
I'm using JDK1.4 and I've tried setting the CLASSPATH.
Any help would be highly appreciated.
-Thanks
-Mike

Answer 1

Here's a tutorial on packages.
http://java.sun.com/docs/books/tutorial/java/interpack/packages.html
If you have a class with "package com.hamilsci" it must be in a directory named hamilsci, hamilsci must be in a directory named com, and com must be in a directory that is in your classpath.