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package and import

2 replies on 1 page. Most recent reply: Oct 9, 2003 10:00 AM by rassuls

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rassuls

Posts: 10
Nickname: rassuls
Registered: Mar, 2003

package and import

Posted: Oct 8, 2003 9:11 PM

I have two java classes A.java & B.java in C:\test\pack folder as:

package pack;
public class A
{
}

and

package pack;
import pack.*;
public class B
{
public static void main(String[] args)
{
System.out.println("Test");
}
}

and the classpath=.;C:\test;

Both files compile successfully but when I run B I get the following error messages:

Exception in thread "main" java.lang.NoClassDefFoundError: B (wrong name: pack/B)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)

Any help?
Thank you
RS

Rahul

Posts: 52
Nickname: wildhorse
Registered: Oct, 2002

Re: package and import

Posted: Oct 8, 2003 9:57 PM

Use the qualified name of the class, because it now belongs to a package:

C:\test>java pack.B

rassuls

Posts: 10
Nickname: rassuls
Registered: Mar, 2003

Re: package and import

Posted: Oct 9, 2003 10:00 AM

Thank you, it worked. Where would I learn about these things? Is this information under classpath readings or JVM invocation from the command line?
Thanks again

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