Exception in thread "main" java.lang.NoClassDefFoundError

[Rajesh Khan]

I am getting the following error , does anyone know what i am doing wrong

C:\jibx\tutorial>java -cp c:\example25;c:\jibx\tutorial\example25\ Test 
Exception in thread "main" java.lang.NoClassDefFoundError: Test (wrong name: exa
mple25/Test)
        at java.lang.ClassLoader.defineClass1(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.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 sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

[Anayonkar Shivalkar]

Hi Rajesh Khan,

Always, SearchFirst. NoClassDefFoundError is very common error.

Have you put your Test class inside any package (exmple25)? In that case, you need to run it accordingly.

I hope this helps.

[Jesper de Jong]

It looks like the class Test is in the package example25.

What you should do is put the base directory of the package in the classpath, and specify the fully-qualified name of the class. For example, if C:\jibx\tutorial is the base directory, try a command like this:

java -cp C:\jibx\tutorial example25.Test

[Rajesh Khan]

Here what i tried. Unfortunately its not working
C:\jibx>java -cp C:\jibx\tutorial example25.Test

Exception in thread "main" java.lang.NoClassDefFoundError: org/jibx/runtime/JiBX
Exception
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
        at java.lang.Class.getMethod0(Unknown Source)
        at java.lang.Class.getMethod(Unknown Source)
        at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
        at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.jibx.runtime.JiBXException
        at java.net.URLClassLoader$1.run(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)
        ... 6 more

[Anayonkar Shivalkar]

Hi,

Now the same exception is occurring for a class org.jibx.runtime.JiBx.

Does that class exist in C:\jibx\tutorial directory in the same structure? That is, there must be a file named C:\jibx\tutorial\org\jibx\runtime\JiBx.class

If this structure (org.jibx.runtime.JiBx) is inside a jar file, then you have to give name of that jar file as well in classpath.

I hope this helps.