Summing (variable) strings error
edit: simplified example
I just don't get it, whenever I sum up a variable that contains a string (ie: string + string), it will give me an error/exception.
For example I call this short function:
publicvoid writeFile()
{
String test ="/loc/to/a/map/";
String test2 = test +"filename";
}
If I remove the ' + "filename" ' it will work without problems.
This works local on my machine but whenever i upload it to a webserver (linux machine) i get the error (see below).
It does not make any sense to me, could there be some version difference ?
The server i run locally runs java 1.5 while the webserver runs java 1.4 (1.4.2)
Anyone can help me?
Error I recieve when I sum up a string:
StandardWrapperValve[jsp]: Servlet.service() for servlet jsp threw exception
java.lang.NoClassDefFoundError: while resolving class: com.WriteFile
java.lang.NoClassDefFoundError: while resolving class: com.WriteFile
at java.lang.VMClassLoader.transformException(java.lang.Class, java.lang.Throwable) (/
usr/lib/libgcj.so.6.0.0)
at java.lang.VMClassLoader.resolveClass(java.lang.Class) (/usr/lib/libgcj.so.6.0.0)
at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.6.0.0)
at com.FilterController.doFilter(javax.servlet.ServletRequest, javax.servle
t.ServletResponse, javax.servlet.FilterChain) (Unknown Source)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(javax.servlet.Serv
letRequest, javax.servlet.ServletResponse) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(javax.servlet.ServletReque
st, javax.servlet.ServletResponse) (/usr/lib/libcatalina-5.0.30.jar.so)
at com.rdt.filter.FilterRewrite.doFilter(javax.servlet.ServletRequest, javax.servlet.S
ervletResponse, javax.servlet.FilterChain) (Unknown Source)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(javax.servlet.Serv
letRequest, javax.servlet.ServletResponse) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(javax.servlet.ServletReque
st, javax.servlet.ServletResponse) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.StandardWrapperValve.invoke(org.apache.catalina.Request, o
rg.apache.catalina.Response, org.apache.catalina.ValveContext) (/usr/lib/libcatalina-5.0.
30.jar.so)
at org.apache.catalina.core.StandardValveContext.invokeNext(org.apache.catalina.Reques
t, org.apache.catalina.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.StandardPipeline.invoke(org.apache.catalina.Request, org.a
pache.catalina.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.StandardContextValve.invokeInternal(org.apache.catalina.Wr
apper, org.apache.catalina.Request, org.apache.catalina.Response) (/usr/lib/libcatalina-5
.0.30.jar.so)
at org.apache.catalina.core.StandardContextValve.invoke(org.apache.catalina.Request, o
rg.apache.catalina.Response, org.apache.catalina.ValveContext) (/usr/lib/libcatalina-5.0.
30.jar.so)
at org.apache.catalina.core.StandardValveContext.invokeNext(org.apache.catalina.Reques
t, org.apache.catalina.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.StandardPipeline.invoke(org.apache.catalina.Request, org.a
pache.catalina.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.StandardHostValve.invoke(org.apache.catalina.Request, org.
apache.catalina.Response, org.apache.catalina.ValveContext) (/usr/lib/libcatalina-5.0.30.
jar.so)
at org.apache.catalina.core.StandardValveContext.invokeNext(org.apache.catalina.Reques
t, org.apache.catalina.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.valves.ErrorReportValve.invoke(org.apache.catalina.Request, org
.apache.catalina.Response, org.apache.catalina.ValveContext) (/usr/lib/libcatalina-5.0.30
.jar.so)
at org.apache.catalina.core.StandardValveContext.invokeNext(org.apache.catalina.Reques
t, org.apache.catalina.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.StandardPipeline.invoke(org.apache.catalina.Request, org.a
pache.catalina.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.StandardEngineValve.invoke(org.apache.catalina.Request, or
g.apache.catalina.Response, org.apache.catalina.ValveContext) (/usr/lib/libcatalina-5.0.3
0.jar.so)
at org.apache.catalina.core.StandardValveContext.invokeNext(org.apache.catalina.Reques
t, org.apache.catalina.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.StandardPipeline.invoke(org.apache.catalina.Request, org.a
pache.catalina.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.core.ContainerBase.invoke(org.apache.catalina.Request, org.apac
he.catalina.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(org.apache.coyote.Request, org.apac
he.coyote.Response) (/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.jk.server.JkCoyoteHandler.invoke(org.apache.jk.core.Msg, org.apache.jk.c
ore.MsgContext) (Unknown Source)
at org.apache.jk.common.HandlerRequest.invoke(org.apache.jk.core.Msg, org.apache.jk.co
re.MsgContext) (Unknown Source)
at org.apache.jk.common.ChannelSocket.invoke(org.apache.jk.core.Msg, org.apache.jk.cor
e.MsgContext) (Unknown Source)
at org.apache.jk.common.ChannelSocket.processConnection(org.apache.jk.core.MsgContext)
(Unknown Source)
at org.apache.jk.common.SocketConnection.runIt(java.lang.Object[]) (Unknown Source)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run() (/tmp/libtomcat-uti
l-5.0.30.jar.so10hffk.so)
at java.lang.Thread.run() (/usr/lib/libgcj.so.6.0.0)
Caused by: java.lang.ClassNotFoundException: java.lang.StringBuilder
at org.apache.catalina.loader.WebappClassLoader.loadClass(java.lang.String, boolean) (
/usr/lib/libcatalina-5.0.30.jar.so)
at org.apache.catalina.loader.WebappClassLoader.loadClass(java.lang.String) (/usr/lib/
libcatalina-5.0.30.jar.so)
at java.lang.Class.forName(java.lang.String, boolean, java.lang.ClassLoader) (/usr/lib
/libgcj.so.6.0.0)
...32 more
