Java Packages question

Posted on 2006-04-17
Medium Priority
Last Modified: 2010-03-31

Again simple things send me nuts.

Here is the scenario..

I have two classes in the same package.
1. I need to make thoese two classes available to the outside the package so any other java application can instantiate it

2. I MUST allow any of these two classes to create an instance of the other.

This is an example os I have.....

package a.b.c.d;

class X
package a.b.c.d;

import a.b.c.d.*;

class Y
  public static void main(String [] args)
   X   xx = new X();   //I am getting an error saying that it cannot find the class.

I have set the CLASSPATH to a.b.c.d.

Whats the solution.
Question by:prain
LVL 14

Expert Comment

ID: 16470837
The classpath should point to parent directory of a package a.b.c.d. In other words do this:

say Your parent dir is c: then
1) add to classpath c:
2) put Your source to c:\a\b\c\d
3) compile the source and make sure it stays in a directory c:\a\b\c\d
4) now run Your code in c: like that:  java a.b.c.d.Y

it should work

Author Comment

ID: 16472793
Ok. I was wrong in writing that classpath line. Well I have set the classpath correctly - to the parent.

I  does not work.

Where are the experts here?
LVL 92

Accepted Solution

objects earned 300 total points
ID: 16473662
> import a.b.c.d.*;

thats not needed as class is in same package

> class X

declare the class public

public class X

same for class Y
LVL 30

Expert Comment

by:Mayank S
ID: 16475510
Have a look at this for a brush up on classpath:


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