classpath problems

[oll3i]

package hello_rmi_iiop;
import java.rmi.Remote;
import java.rmi.RemoteException;

public interface HelloInterface extends Remote {
	   public void sayHello( String from ) throws RemoteException;
	}



package hello_rmi_iiop;

//HelloImpl.java
import java.rmi.RemoteException;
import javax.rmi.PortableRemoteObject;

public class HelloImpl extends PortableRemoteObject implements HelloInterface {
   public HelloImpl() throws RemoteException {
       super();     // invoke rmi linking and remote object initialization
   }

   public void sayHello( String from ) throws RemoteException {
       System.out.println( "Hello from " + from + "!!" );
       System.out.flush();
   }
}

when i try to compile HelloImpl i get an error
D:\JAVA_P~1\Z1\ SRC\HELLO_~1>ja vac -d . -classpath . HelloImpl.java
HelloImpl.java: 7: cannot find symbol
symbol: class HelloInterface
public class HelloImpl extends PortableRemoteO bject implements HelloInterface {
^
1 error

[JosAH]

Are the .java files stored in a subdirectory hello_rmi_iiop? As a rule of thumb,
the source files directory structure should be the same as your .class file
directory structure.

kind regards,

Jos

[oll3i]

yes they are all in hello_rmi_iiop ..
HelloClient.jav a
HelloImpl.java
HelloInterface. java
and HelloServer.jav a

[oll3i]

i solved it :) thank you

[oll3i]

but rmic -iiop HelloImpl returns an error
D:\JAVA_P~1\Z1\ SRC\HELLO_~1>rm ic -iiop HelloImpl
error: Class HelloImpl not found.
1 error

[JosAH]

yes they are all in hello_rmi_iiop

Then your directory structure is goofy. Do this instead:

<path>/java/src/hello_rmi_iiop
<path>/java/src/other_package
<path>/java/classes

You already stored your .java files in the correct directory but you don't want
your .class files in there or in a subdirectory thereof. Move to the directory
<path>/java/src in order to compile any java file and type this:

javac -classpath ../classes -d ../classes -sourcepath . hello_rmi_iiop/*.java

This tells the javac compiler to store the compiled files at the directory specified
by the -d flag which happens to equal the classpath for the moment. Other
source files can be found at the directory specified by the -sourcepath flag.

That way you build up two identical directory structures: one for the .class
files and one for your .java source files. The "classes" directory structure serves
fine as a classpath root directory.

kind regards,

Jos

[oll3i]

still error :(
Katalog: D:\JAVA_P~1\CLA SSES

2007-05-09 21:50 <DIR> .
2007-05-09 21:50 <DIR> ..
2007-05-09 21:50 1*238 HelloClient.cla ss
2007-05-09 21:50 708 HelloImpl.class
2007-05-09 21:50 228 HelloInterface. class
2007-05-09 21:50 998 HelloServer.cla ss
4 plik(ów) 3*172 bajtów
2 katalog(ów) 7*812*845*568 bajtów wolnych

D:\JAVA_P~1\CLA SSES>rmic -iiop HelloImpl
error: Class HelloImpl not found.
1 error

[JosAH]

still error :(
Katalog: D:\JAVA_P~1\CLA SSES

2007-05-09 21:50 <DIR> .
2007-05-09 21:50 <DIR> ..
2007-05-09 21:50 1*238 HelloClient.cla ss
2007-05-09 21:50 708 HelloImpl.class
2007-05-09 21:50 228 HelloInterface. class
2007-05-09 21:50 998 HelloServer.cla ss
4 plik(ów) 3*172 bajtów
2 katalog(ów) 7*812*845*568 bajtów wolnych

D:\JAVA_P~1\CLA SSES>rmic -iiop HelloImpl
error: Class HelloImpl not found.
1 error

the rmi stub compiler compiles stubs from .class files so you should go to
the "classes" directory and compile like this:

rmic hello_rmi_iiop.HelloImpl

kind regards,

Jos

[oll3i]

D:\JAVA_P~1\CLA SSES>rmic hello_rmi_iiop. HelloImpl
error: Class hello_rmi_iiop. HelloImpl not found.
1 error

[JosAH]

D:\JAVA_P~1\CLA SSES>rmic hello_rmi_iiop. HelloImpl
error: Class hello_rmi_iiop. HelloImpl not found.
1 error

You have to be a bit more verbose, now I can only guess:

1) Did you change your cwd to the classes directory?
2) Is that .class file really there?
3) Did javac keep its mouth shut?

kind regards,

Jos

[oll3i]

i change the directory to classes directory the HelloImpl.class is there
and javac -classpath ../classes -d ../classes -sourcepath . hello_rmi_iiop/*.java completed without any errors