How to compile this? ( Classpath problem)

[Mubeen Shaik]

Hi all,
I am reading Thinking in JAVA and i am trying to compile the following code. It is giving me error on import statement.
Program
==============

//:  C03: Assignment .java
// Assignmnet with objects is bit tricky

import com.bruceeckel.simpletest.*;

class Number{
 
   int i;
 }
public class Assignment {
  
 static Test monitor = new Test();
  public static void main(String [] args) {
  Number n1 = new Number();
  Number n2 = new Number();
  n1.i = 9;
  n2.i = 47;
System.out.println("1 : n1.i : "   +n1.i  +  " , n2.i: "  +n2.i);
  }
 } ///:~

==================
Compilation Error

  
C:\JAVA\Think\C03>javac Assignment.java
Assignment.java:5: package com.bruceeckel.simpletest does not exist
import com.bruceeckel.simpletest.*;
^
Assignment.java:17: cannot access Test
bad class file: C:\com\bruceeckel\simpletest\Test.class
class file contains wrong class: com.bruceeckel.simpletest.Test
Please remove or make sure it appears in the correct subdirectory of the classpa
th.
 static Test monitor = new Test();
        ^
2 errors

My Classpath is as follows

 
C:\JAVA Software\lib;C:\JAVA Software\lib\tools.jar;C:\JAVA Software\lib\dt.jar;C:\JAVA Software\jre\lib\rt.jar;.;C:\com\bruceeckel\simpletest

===========
Please help me in compiling and understanding this program. I am sure that, i am missing something in classpath.
Thanks in advance,
Mubeen Shaik.

[Nigel Browne]

If I remember correctly the source code to the Eckels book is delivered uncompiled. There is a supplied build.xml file which compiles everything as long as ANT is installed.
regards
Nigel

[Stefan Wagner]

The classpath is the path a class may be found.
you class com.bruteforce.sitest isn't found in:
C:\com\bruteforce\sitest
but in
C:\
and com\bruteforce\sitest belongs to that, what is found in C:\

[Mubeen Shaik]

Hi Nigel,
I have compiled all the programs and created the classes. Still I am getting the same error.Any Help on this?.
Thanks,
Mubeen.

[Stefan Wagner]

Did you read the output:
class file contains wrong class: com.bruceeckel.simpletest.Test
Please remove or make sure it appears in the correct subdirectory of the classpath
If the classname is Test and the package-declaration is: com.bruceeckel.simpletest.Test you have to put it into a directory x, such that:
x/com/bruceeckel/simpletest/Test.class
is it's location (revert the slashes in mind).
And x has to be in the classpath. (i.e: x=C:\)

[Mubeen Shaik]

Hi Stefan,
Thanks for that. It worked and i have compiled the program. Now in my classpath i have "C:\".
Could you please explain me why it didn't work with this class path
C:\com\bruceeckle\simpletest.
Thanks in advance,
Mubeen Shaik.

[Wai Hung]

the directory in classpath is the starting point.If you are importing com.bruceeckle.simpletest.*,
and your classpath have c:\
it will expect the class is in C:\com\bruceeckle\simpletest
but if your classpath is C:\com\bruceeckle\simpletest
then it will expect the class is in C:\com\bruceeckle\simpletest\com\bruceeckle\simpletest.

[Mubeen Shaik]

Hi All,
Thanks for that detailed explanation.This forum helps alot.
Thanks,
Mubeen Shaik.