Apache Tomcat error Could the main class:

Computer: Software & Programmierung Java
#1

Hello!

I am trying some Apache Cassandra examples and could run the server by calling the cassandra.bat file before. I didn’t change anything deliberately, but now, Cassandra will not start.

I searched the Web for the error message „Could not find the main class: Files\Apache. Program will exit.“ and found out that there may be some space in a system variable called CATALINA_HOME, but I didn’t set that variable ever. Do you know about a proper solution for this error?

Thanks in advance!

E. SABAN

C:\Program Files\Apache Cassandra\bin>cassandra Starting Cassandra Server Exception in thread „main“ java.lang.NoClassDefFoundError: Files\Apache Caused by: java.lang.ClassNotFoundException: Files\Apache at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) Could not find the main class: Files\Apache. Program will exit.

#2

Hello Saban, I am sorry I am not a Tomcat expert and am unable to help.

#3

Found the solution to my problem
I found out the problem. I had changed the path of Cassandra to „Apache Cassandra“. That’s the reason for the problems. I solved the self-made problem by removing the quotation marks around the JAVA_HOME definition. The space inbetween „Program Files“ seems not to be a problem. I renamed „Apache Cassandra“ back to „Apache-Cassandra-0.7.4“. Now, it runs properly.

#4

Hello,
I don’t think that i could help, sorry. But this error normally means that this application does not find some Java bib. Some class is missing.

Just try to set CATALINA_HOME as a system variable. Something like:
CATALINA_HOME=E:\Tomcat\

Ans be sure that your Java home variable is also set. Something like:
JAVA_HOME=E:\j2sdk1.4.2\

best regards

#5

Hi Sae1962

i am very busy today.
Look at this link it will helps you.

http://tomcat.apache.org/tomcat-4.1-doc/class-loader…

Hello!

I am trying some Apache Cassandra examples and could run the
server by calling the cassandra.bat file before. I didn’t
change anything deliberately, but now, Cassandra will not
start.

I searched the Web for the error message „Could not find the
main class: Files\Apache. Program will exit.“ and found out
that there may be some space in a system variable called
CATALINA_HOME, but I didn’t set that variable ever. Do you
know about a proper solution for this error?

Thanks in advance!

E. SABAN

#6

ah, TY for letting me know. Good luck with your project.

#7

Hallo E.SABAN,

bin leider nicht mehr in dem Feld tätig - werde gleich mein Profil ändern. Sorry.

Viel Erfolg

A.Hahn

#8

Seems that the start script can’t handle spaces in the path. Either correct the script by applying „“ around the path or move the installation to a path without spaces.

Regards,
Heinz

C:\Program Files\Apache Cassandra\bin>cassandra Starting
Cassandra Server Exception in thread „main“
java.lang.NoClassDefFoundError: Files\Apache Caused by:
java.lang.ClassNotFoundException: Files\Apache at