Doubt in class.forName()

[sridhar Ranganathan]

package JP1;
public class a
{
    public void myMethod()
    {
        System.out.println("Welcome Mr! ");
    }
 
    public static void main(String ar[])
    {
    }
}

------------------------------

package JP1;
import JP1.a;
public class b extends a
{
    public static void main(String ae[])
    {
        try
        {
            Class object=Class.forName("a");
            a obj=(a)object.newInstance();
            obj.myMethod();
        } catch (ClassNotFoundException cnfe)
        {
            System.out.println("Exception in "+cnfe);
        } catch (InstantiationException ie1)
        {
        } catch (IllegalAccessException ie2)
        {
        }
    }
}

Thanks,
Sridhar.R
---------------
Its compiled fine..But while running iam getting following errors...Kindly help me and tell me reason...I have setted the env variables properly...

Exception in thread "main" java.lang.NoClassDefFoundError: b (wrong name: JP1/b)
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
        at java.security.SecureClassLoader.defineClass  (SecureClassLoader.java:12 3)

[RP]Added code tags[/RP]
[ September 30, 2008: Message edited by: Rob Prime ]

[Rob Spoor]

Please Use Code Tags. I've added them for you this time.

How are you invoking the JVM? Are you using JP1.b, or just b as the class name? Because it needs to be the fully qualified name, with the package: JP1.b

[Poonam Agarwal]

Are you using JP1.b, or just b as the class name
--------------------------------------------------------------------------------

Are you talking about JP1.a I guess becouse this code did't use JP1.b anywhere... please correct me if I am wrong.

[Poonam Agarwal]

Are you using JP1.b, or just b as the class name
--------------------------------------------------------------------------------

Are you talking about JP1.a I guess becouse this code did't use JP1.b anywhere... please correct me if I am wrong.

[Joanne Neal]

Originally posted by Poonam Agarwal:
Are you using JP1.b, or just b as the class name
--------------------------------------------------------------------------------

Are you talking about JP1.a I guess becouse this code did't use JP1.b anywhere... please correct me if I am wrong.

Your class name is b and it's in a package called JP1, therefore the full name of the class is JP1.b.