File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Beginning Java and the fly likes cannot find symbol Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of Android Security Essentials Live Lessons this week in the Android forum!
JavaRanch » Java Forums » Java » Beginning Java
Bookmark "cannot find symbol" Watch "cannot find symbol" New topic
Author

cannot find symbol

Urs Waefler
Ranch Hand

Joined: Mar 13, 2007
Posts: 77
Hi

I have a very basic problem, I think, I am crazy?

There are two files:

public class Z{}

public class Y extends Z {}

These two files are saved in the same folder. I can not compile the file called Y.java.

This is the message:

cannot find symbol
symbol class Z
public class Y extends Z {}

What is wrong?

Urs


SCJP 1.4
Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 38033
    
  22
You haven't given enough details.

Do the two files have package declarations? In which case you might only be able to compile them in the order Z--->Y. Try that.
Urs Waefler
Ranch Hand

Joined: Mar 13, 2007
Posts: 77
They do not have package declarations. It is very basic.

Z.java
Y.java

The source code is writen above. It is really a stupid problem, but I need to understand it.
fred rosenberger
lowercase baba
Bartender

Joined: Oct 02, 2003
Posts: 11161
    
  16

are the files both named correctly? is your CLASSPATH set?


There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
Bill Shirley
Ranch Hand

Joined: Nov 08, 2007
Posts: 457
show us your actual code,
show us the actual error message,

use code tags!


Bill Shirley - bshirley - frazerbilt.com
if (Posts < 30) you.read( JavaRanchFAQ);
Urs Waefler
Ranch Hand

Joined: Mar 13, 2007
Posts: 77
There are two files saved in the same folder:

Z.java:
public class Z{}

Y.java:
public class Y extends Z {}

That is all. I can compile the file Z.java. But I can not compile the file Y.java. I get the following message:

cannot find symbol
symbol class Z
public class Y extends Z {}
Abhinav Srivastava
Ranch Hand

Joined: Nov 19, 2002
Posts: 349

Is the folder where Z.class is generated in the CLASSPATH? If you have
"." in the classpath, you should be able to compile from the folder where Z.class is present.
Urs Waefler
Ranch Hand

Joined: Mar 13, 2007
Posts: 77
I have saved both files on the desktop. I added CLASSPATH in the environment variable.

C:\Dokumente und Einstellungen\Urs W�fler\Desktop

This is saved in CLASSPATH.

But it does not work. I do not properly understand CLASSPATH.
Ernest Friedman-Hill
author and iconoclast
Marshal

Joined: Jul 08, 2003
Posts: 24183
    
  34

cd C:\Dokumente und Einstellungen\Urs W�fler\Desktop
javac -classpath . Y.java


[Jess in Action][AskingGoodQuestions]
Sunny Jain
Ranch Hand

Joined: Jul 23, 2007
Posts: 433

Hi,
Do one thing, First after compiling z.java..search it class file where it got generated...compiler is not able to find out that file..!!


Thanks and Regards,
SCJP 1.5 (90%), SCWCD 1.5 (85%), The Jovial Java, java.util.concurrent tutorial
Urs Waefler
Ranch Hand

Joined: Mar 13, 2007
Posts: 77
It worked.

javac -classpath . Y.java

This was the solution. Thank you.
Raghavan Muthu
Ranch Hand

Joined: Apr 20, 2006
Posts: 3344

That's great!

You can get to know about these common problems here.

Also you can read this thread about How to set the classpath


Everything has got its own deadline including one's EGO!
[CodeBarn] [Java Concepts-easily] [Corey's articles] [SCJP-SUN] [Servlet Examples] [Java Beginners FAQ] [Sun-Java Tutorials] [Java Coding Guidelines]
 
 
subject: cannot find symbol
 
Similar Threads
Compiling multiple source files.
problem on extending a class declared on the same package!!
Autoboxing, checking is two objects refer to the same object
constructor
Constructor Question