creating packages in java

Hi everybody, I am Rupesh Narayan, i faces a problem while creating package in core java. I write two programs that are described below:-

1.PackageDemo.java package javaclass; import java.io.*; public class PackageDemo { private int n; public PackageDemo() { n=1; } public int getNumber() { return n; } }

2.Package.java

package javaclass; import javaclass.*; import java.io.*; public class Package { public static void main(String args[]) { PackageDemo obj=new PackageDemo(); System.out.println(obj.getNumber()); } }

the structure of files are as shown below

D:\Package | | | javaclass(folder) | | | PackageDemo.java | Package.java

Error :package javaclass does not exist import javaclass.PackageDemo ^ cannot find symbol symbol :class PackageDemo location : class Package PackageDemo p=new PackageDemo(); ^

   cannot find symbol 
   symbol :class PackageDemo
   location : class Package
   PackageDemo p=new PackageDemo();
                     ^

same thing working well with windows XP but cause problem with windows7