Re: Problems compiling a javaprogram

["Mike Silvers" <msilvers@xxxxxxxxxxx>]

All I can say is..AAAGGGHHH!!!

I tried to move the source to the com/ShipleyPgpEdi directory, I tried to
compile from the root folder, from my home folder, and from the
/com/ShipleyPgpEdi folder.  All had the same results.  I even tried to
import the com.ShipleyPgpEdi.SystemProp; class.  I received the same error
that it can not resolve the symbol.

I compiled the classes successfully on a PC using the same package and
folder structure.

Any other ideas?

Mike




----- Original Message -----
From: "Blair Wyman" <blairw@us.ibm.com>
To: <java400-l@midrange.com>
Sent: Wednesday, October 31, 2001 12:55 PM
Subject: Re: Problems compiling a javaprogram


>
> A couple of ideas...
>
> First, it doesn't appear that your directory structure
> (/com/ShipleyPgpEdi/src) matches the package definition
> (com.ShipleyPgpEdi).  I believe you do need to have the directory
structure
> match the package definition, so you probably want to move the 'src'
> directory below the /com in your hierarchy (or remove it).
>
> Next, you do want to specify the package/directory qualified name on the
> compile command.
>
> I was able to sort of reproduce the errors you're seeing if I tried to
> compile while in the same directory as my Java source, instead of being at
> the root of the package.   For instance, I made a directory
> /home/blair/my/pkg and put two files in it -- c1.java and c2.java.
c1.java
> just tries to instantiate a new c2.  Both are declared to be in 'package
> my.pkg;'
>
> Here they are:
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
> - -
>      // File c1.java
>      package my.pkg;
>      public class c1
>      {
>           public static void main(String[] args) {
>                c2 = new c2();
>           }
>      }
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
> - -
>      // File c2.java
>      package my.pkg;
>      public class c2 {
>      }
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
> - -
>
> If I compile like so, with the directory-qualified names, it works:
>    > cd /home/blair
>      $
>    > javac my/pkg/c1.java
>      $
>    > ls -l my/pkg
>      total: 64 kilobytes
>      -rw-rw-rw-  1 BLAIR  0                   288 Oct 31 10:49 c1.class
>      -rwxrwxrwx  1 BLAIR  0                   176 Oct 31 10:37 c1.java
>      -rw-rw-rw-  1 BLAIR  0                   256 Oct 31 10:49 c2.class
>      -rwxrwxrwx  1 BLAIR  0                   152 Oct 31 10:37 c2.java
>      $
>
> However, if I change to the directory containing the source, I see these
> failures (that look like yours):
>
>    > cd my/pkg
>      $
>    > rm *.class
>      $
>    > javac c1.java
>      c1.java:5: cannot resolve symbol
>      symbol  : class c2
>      location: class my.pkg.c1
>              c2 z = new c2();
>              ^
>      c1.java:5: cannot resolve symbol
>      symbol  : class c2
>      location: class my.pkg.c1
>              c2 z = new c2();
>                         ^
>      2 errors
>      $
>
> So, first I'd recommend realigning your directory structure to reflect the
> package declaration (I really think that is required), and next to compile
> from the directory *below* the first one in the package declaration, using
> directory/package-qualified names.
>
> HTH.
>
> -blair
>
> Blair Wyman -- iSeries JVM -- (507) 253-2891
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> "I was born not knowing, and have had only a
> little time to change that here and there."   -- Richard P. Feynman
>
>
>
>
>                     "Mike Silvers"
>                     <msilvers@hbs-inc.       To:     "Java400L List"
<java400-l@midrange.com>
>                     com>                     cc:
>                     Sent by:                 Subject:     Problems
compiling a javaprogram
>                     java400-l-admin@mi
>                     drange.com
>
>
>                     10/31/2001 09:51
>                     AM
>                     Please respond to
>                     java400-l
>
>
>
>
>
> Hi all.
>
> I have a problem using the javac command in the QSH environment.  I set
the
> classpath to include my package directory.  When I try to compile a class,
> I
> receive the following error:
>
> /com/ShipleyPgpEdi/src/newAS400Connection.java:71: cannot resolve symbol
> symbol  : class SystemProp
> location: class com.ShipleyPgpEdi.newAS400Connection
>   SystemProp sp = new SystemProp();
>   ^
> /com/ShipleyPgpEdi/src/newAS400Connection.java:71: cannot resolve symbol
> symbol  : class SystemProp
> location: class com.ShipleyPgpEdi.newAS400Connection
>   SystemProp sp = new SystemProp();
>                       ^
>
> Now, I looked at the class file SystemProp and it does exist in the
package
> folder.  I then looked at the authorities of the SystemProp class file.  I
> changed the authorities to include PUBLIC *RWX and *ALL.  I rechecked the
> classpath to make sure it included the package folder (where the
SystemProp
> class resides).  I even tried to use the javac command with the -classpath
> parameter and specified the classpath where this class file is located.
> All
> of the other imports are able to be resolved.  I did not specifically
> import
> this class because the SystemProp class is in the same package as the
class
> I am trying to compile.  This is really frustrating.
>
> I made sure of the following:
>
>     1.    The class file SystemProp exists.
>     2.    PUBLIC had *RWX and *ALL authority to this class file.
>     3.    There are no other authority issues with this class file (ie:
> excludes, etc).
>     4.    The path for SystemProp exists in the classpath.
>     5.    Both .java files specify the same package statement.
>
> What am I missing?
>
> Mike
>
> ================================
>
> Mike Silvers
> AS/400 Senior Programmer/Analyst
> AS/400 IBM Certified RPG IV Developer
> AS/400 IBM Certified Solutions Expert
> Hainey Business Systems
> 8 E. Canal St
> Dover, PA 17315
> Branch Office:  (410) 397-8739
> Phone:  (800) 932-3380
> Fax:  (717) 292-9474
> Web: http://www.hbs-inc.com
> ________________________________
> Providing E-Commerce, EDI, AS/400
> Development and related services
> nationwide.
> ================================
>
>
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