Exception in thread "main" java.lang.NoClassDefFoundError:
scala/reflect/ClassManifest
at org.nlogo.api.Version$.<init>(Version.scala:15)
at org.nlogo.api.Version$.<clinit>(Version.scala)
at org.nlogo.app.Splash$MyIconHolder.<init>(Splash.scala:31)
at org.nlogo.app.Splash$.beginSplash(Splash.scala:13)
at org.nlogo.app.App$.main(App.scala:83)
at Example$.main(Example.scala:7)
at Example.main(Example.scala)
The stacktrace is small and seems to happen very shortly after NetLogo
loads up, almost immediately failing to find a valid Scala class at
runtime. This indicates that you probably don't have
'scala-library.jar' on your classpath.
Also, in the library provided in the git repository, there is a
library missing: log4j.
The libraries are not included directly in the Git repository because
dependencies and artifacts ('.jar' files) don't really belong in version
control. Instead, configuration files are told which libraries NetLogo
depends upon, and the build tool downloads those libraries when they are
needed.
As Seth warned in an earlier post, running NetLogo requires having the
'lib' directory on your classpath. Inside that directory are all of the
libraries that NetLogo depends upon and expects to be available at
runtime. However, if you're using a 'NetLogo.jar' built off of
'master', you can't use the 'lib' directory from the standard NetLogo
distribution, because the dependencies are different in the 'master'
branch. After you do './sbt package' or './sbt compile' or some similar
command to make SBT pull down the dependencies and compile the NetLogo
code in the repository that you checked out, you should then be able to
retrieve the '.jar' files you need from the 'lib_managed' directory of
your NetLogo repository.
Jason Bertsche
Senior Software Developer - NetLogo
On 12/29/2013 07:12 AM, Robert White wrote:
Hello Jason,
Thanks I followed https://github.com/NetLogo/NetLogo/wiki/Building
and build the master brach and get the jar and used Netlogo.jar as my
external library.
but still I get errors as follows. It seems that the scala version is
still not compatible. I wonder why. What can I do to change everything?
Also, in the library provided in the git repository, there is a
library missing: log4j.
I got it
from: http://grepcode.com/snapshot/repo1.maven.org/maven2/log4j/log4j/1.2.15
and it stopped reporting problems but I can't run it. The following
are the errors I got. I am using eclipse
My Scala version is 2.10.3
What do you think is the problem?
Thanks very much
Robert
Exception in thread "main" java.lang.NoClassDefFoundError:
scala/reflect/ClassManifest
at org.nlogo.api.Version$.<init>(Version.scala:15)
at org.nlogo.api.Version$.<clinit>(Version.scala)
at org.nlogo.app.Splash$MyIconHolder.<init>(Splash.scala:31)
at org.nlogo.app.Splash$.beginSplash(Splash.scala:13)
at org.nlogo.app.App$.main(App.scala:83)
at Example$.main(Example.scala:7)
at Example.main(Example.scala)
Caused by: java.lang.ClassNotFoundException: scala.reflect.ClassManifest
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 7 more
On Sunday, 29 December 2013 08:16:43 UTC, Jason Bertsche wrote:
Yes, you can use `./sbt package` from the root directory of a
checked-out NetLogo repository in order to create the
'NetLogo.jar' file for that branch.
Jason Bertsche
Senior Software Developer - NetLogo
On 12/28/2013 05:23 PM, Robert White wrote:
I think I can compile my own with ./sbt so I will try again and see.
thanks
On Saturday, 28 December 2013 23:18:54 UTC, Robert White wrote:
Hello.
https://github.com/NetLogo/NetLogo/branches
<https://github.com/NetLogo/NetLogo/branches>
I found many branches. But I think there isn't a jar file
there in the 'master' or 'headless' branches. Do I have to
compile my own?
Thanks and sorry to ask these fundamental questions. I am
still an undergraduate student. Please accept my apologies if
you think I am not familiar with these things (which I should).
Thanks again
Robert
On Saturday, 28 December 2013 23:04:38 UTC, Seth Tisue wrote:
I just brought the information on this in the
"Controlling API" and
"Extensions API" wiki pages up to date. Scala 2.9.1,
2.9.2, and 2.9.3
are all acceptable. Other versions of Scala definitely
will not work.
(for use with NetLogo 5.0.x)
--
Seth Tisue | http://tisue.net
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