Re: Issues with package declarations

From:

Lew <noone@invalid.com>

Newsgroups:

comp.lang.java.programmer

Date:

Sun, 03 Aug 2008 20:48:58 -0400

Message-ID:

<IIGdnbKPNYxnzAvVnZ2dnUVZ_qOdnZ2d@comcast.com>

(Please trim your posts.)

ankur wrote:

I have :

package testpack;

public class testclass {

That should be 'Test'. "Class" in a class name is redundant.

....

C:\Jfiles\testpack>dir
Volume in drive C has no label.
Volume Serial Number is 2EB8-82AA

Directory of C:\Jfiles\testpack

08/03/2008 05:32 PM <DIR> .
08/03/2008 05:32 PM <DIR> ..
08/03/2008 05:26 PM 135 testclass.java
1 File(s) 135 bytes
2 Dir(s) 30,197,583,872 bytes free

This works:

C:\Jfiles\testpack>javac testclass.java

You should be up one directory:

javac testpack/Test.java

Now why this error?? :

C:\Jfiles\testpack>java testclass

Because that isn't the class name. It's 'testpack.Test', not 'Test'. (with
your misnamed class, it's

java -cp C:\Jfiles testpack.testclass

)

The package name must be part of the class name, and in the right directory
relative to the classpath.

Exception in thread "main" java.lang.NoClassDefFoundError: testclass
(wrong name: testpack/testclass)

Correct, because you named the class with a package, then omitted the package
from the class name.

--
Lew