Problem with MSDOS

[S Perreault]

I feel stupid even writing this but I am having trouble compiling a class that implements an interface. Both the class and the interface are in the same directory.
For instance, I am working on the RMI example on the Sun site and I have two files: Calculator.java (interface) and CalculatorImpl.java (Implementor of Calculator)
Code for both:

/*
 * ICalculator.java
 *
 * Created on November 3, 2003, 8:52 PM
 */
package suncertify.test;
import java.rmi.*;
/**
 *
 */
public interface Calculator
          extends java.rmi.Remote {
    public long add(long a, long b)
        throws java.rmi.RemoteException;
    public long sub(long a, long b)
        throws java.rmi.RemoteException;
    public long mul(long a, long b)
        throws java.rmi.RemoteException;
    public long div(long a, long b)
        throws java.rmi.RemoteException;
}
  

package suncertify.test;
import java.rmi.server.*;
/**
 *
 */
public class CalculatorImpl
    extends
      java.rmi.server.UnicastRemoteObject
    implements  Calculator {
    // Implementations must have an
    //explicit constructor
    // in order to declare the
    //RemoteException exception
    public CalculatorImpl()
        throws java.rmi.RemoteException {
        super();
    }
    public long add(long a, long b)
        throws java.rmi.RemoteException {
        return a + b;
    }
    public long sub(long a, long b)
        throws java.rmi.RemoteException {
        return a - b;
    }
    public long mul(long a, long b)
        throws java.rmi.RemoteException {
        return a * b;
    }
    public long div(long a, long b)
        throws java.rmi.RemoteException {
        return a / b;
    }
}

I can open up a DOS window and compile the Calculator.java interface with no problem. If I attempt to compile the CalculatorImpl.java class, I get this error:

  
CalculatorImpl.java:12: cannot resolve symbol
symbol  : class Calculator
location: class suncertify.test.CalculatorImpl
       implements Calculator {
                  ^

Thanks for any ideas!
Perogi.

[Joe Ess]

Your classpath probably does not include the current directory. Either run:
javac -classpath . CaculatorImpl.java
Or compile them both at the same time:
javac Calculator*.java

[Maulin Vasavada]

Hi
Assuming,
1. you have the directories with names, suncertify and test where test is subdir of suncertify and
2. you have your .java files in suncertify\test\
3. and just for simplicity you have suncertify folder in C:\> then you can do following,
C:\>javac suncertify\test\*.java
And see if that works.
Its usually recommended that we have the same source hierarchy as in package names and with packages, I have "never" tried to compile the code via going into any of the package directories and then do javac. Always be in "parent of the package directory and compile all sources via *.java thing"...
Hope this solves your problem.
Regards
Maulin

[S Perreault]

Maulin,
Yup, I totally forgot that I wasn't compiling it from the root.
Thanks for the heads up!
Perogi.