Trying to create and use of a packaged class....

Hi ,
I have created a directory and put there the generated class....
The dir structure is as:
C:\oracle_files\Java\Examples\
                              class_variables
                              common_classes
I have set the classpath to both the two above directories....
The ThreeBedroomHouse class which has been compiled and put into the \common_classes is as follows...:
package common_classes;
public class ThreeBedroomHouse
      /*private class variable*/
The compilation(successful) was done as :
C:\oracle_files\Java\Examples\class_variables>
C:\oracle\product\10.2.0\database10g\jdk\bin\javac -d C:\oracle_files\Java\Examples\common_classes\ ThreeBedroomHouse.java
and the ThreeBedroomHouse.class file was generated in the "C:\oracle_files\Java\Examples\common_classes" directory....
I tried to compile the second .java file , called HomeBuilder -including a main()- with code such as:
import common_classes.*;
public class HomeBuilder
{When i try to compile it....
C:\oracle_files\Java\Examples\class_variables>C:\oracle\product\10.2.0\database10g\jdk\bin\javac HomeBuilder.java
I get the errors....
package common_classes does not exist....
Can you please pinpoint the error....?????
Many thanks ... for your help and info....
Sim

I have succedded in running it.....at last!!!! However , in a manner which is not understandable to me.....
That are the steps i 've taken.....
[pre]C:\oracle_files\Java\Examples\class_variables>set classpath
CLASSPATH=.;C:\oracle_files\Java\Examples
C:\oracle_files\Java\Examples\class_variables>C:\oracle\product\10.2.0\database10g\jdk\bin\javac -d C:\oracle_files\Java\Examples ThreeBedroomHouse.java
C:\oracle_files\Java\Examples\class_variables>C:\oracle\product\10.2.0\database10g\jdk\bin\javac HomeBuilder.java
HomeBuilder.java:28: cannot access ThreeBedroomHouse
bad class file: .\ThreeBedroomHouse.java
file does not contain class ThreeBedroomHouse
Please remove or make sure it appears in the correct subdirectory of the classpath.
ThreeBedroomHouse myHouse=new ThreeBedroomHouse();
*^
1 error
C:\oracle_files\Java\Examples\class_variables>set classpath=C:\oracle_files\Java\Examples
C:\oracle_files\Java\Examples\class_variables>C:\oracle\product\10.2.0\database10g\jdk\bin\javac HomeBuilder.java
C:\oracle_files\Java\Examples\class_variables>java HomeBuilder
Exception in thread "main" java.lang.NoClassDefFoundError: HomeBuilder
C:\oracle_files\Java\Examples\class_variables>set classpath=.,C:\oracle_files\Java\Examples
C:\oracle_files\Java\Examples\class_variables>java HomeBuilder
Exception in thread "main" java.lang.NoClassDefFoundError: HomeBuilder
C:\oracle_files\Java\Examples\class_variables>set classpath=.;C:\oracle_files\Java\Examples
C:\oracle_files\Java\Examples\class_variables>java HomeBuilder
3
3
4
4
C:\oracle_files\Java\Examples\class_variables>The above in bold are the 'critical' points in the whole procedure.....
First of all , i have deleted the ThreeBedroom.class file generated and i have compiled as such
C:\oracle_files\Java\Examples\class_variables>C:\oracle\product\10.2.0\database10g\jdk\bin\javac -d C:\oracle_files\Java\Examples ThreeBedroomHouse.java
Then , i have realized that i have made a mistake at setting the classpath ..... I have seperated the two entries ('.' and <directory path>) with a comma instead of a semicolon ';'.....
But something i cannot understand is......
when i have set the classpath as : CLASSPATH=.;C:\oracle_files\Java\Examples the compilation of the HomeBuilder.java is unsuccessful ....
I have to set the CLASSPATH as CLASSPATH=C:\oracle_files\Java\Examples
without the 'characters' *.;* to have it compiled successfully......
Afterwards... if i try to execute the compiled .class file with the current classpath ... the java exe file produces error again.....
I have to set it at its previous setting in order to run it successfully.....
All this description is shown above......
Can you please explain this 'strange(????) behavior'....?????
Many thanks...
Sim

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Any clues on how to solve this problem would be appreciated.
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To unsubscribe, email '[email protected]' with
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To unsubscribe, email '[email protected]' with
'unsubscribe forte-users' as the body of the message.
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Hi Richard,
Your question about "utility classes" brings up a number of issues, all of
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-----Original Message-----
From: Robinson, Richard
Sent: Tuesday, March 02, 1999 5:44 PM
To: '[email protected]'
Subject: How do you create and use "common" type classes?
I'm relatively new to forte and I'd like to know how can you handle utility
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