Error: Could not find or load main class edu.stanford.nlp.pipeline.StanfordCoreNLPServer

[85405115]

hello, when i write below command,i get an error.
command:
java -mx4g -cp "*" edu.stanford.nlp.pipeline.StanfordCoreNLPServer [port] [timeout]
Error:
Error: Could not find or load main class edu.stanford.nlp.pipeline.StanfordCoreNLPServer

i am a beginner in python. but i need to use this module.
please help me,what should i do?

[ghost]

If you're using -cp "*", you should be running this command in the directory where you installed StanfordCoreNLP (e.g. /home/stanford-corenlp-full-2015-12-09/).

Make sure that do one of the following

• You run the command inside the corenlp installation path
• You change -cp "*" to the installation path (i.e. -cp "/home/stanford-corenlp-full-2015-12-09/")
• You add the installation path to the CLASSPATH environment variable

You can find more info here

[PawarKishori]

After running this
java -mx3g edu.stanford.nlp.pipeline.StanfordCoreNLP -outputFormat json -file input.txt
I am getting :
Error: Could not find or load main class edu.stanford.nlp.pipeline.StanfordCoreNLP

I am getting above error(Though I have successfully set the path of CoreNLP in bashrc). I tried to run the command in this directory too: /home/stanford-corenlp-full-2015-12-09/
Still getting the same error.

Please help me.

[leolle]

@PawarKishori I get the same error, do you solve it?

[Dabuk]

@PawarKishori @leolle getting same error here, did you solve it?

[Khallil]

@PawarKishori It seems that using " -cp "*" " is the attended way to use the StanfordCoreNLP, use it in the StanfordCoreNLP directory

[anoopsingh]

java -mx3g -cp "*" edu.stanford.nlp.pipeline.StanfordCoreNLP, this works for me

[SimengSun]

I solved this problem by updating to java8

[BioComSoftware]

I know this is an old issue, but I wanted to mark it here for other's reference.

This issue can also happen if you have your stanford-corenlp-full-YYYY-MM-DD directory on a mounted file system. I was having this issue when attempting to start it in an NFS mount. I moved it locally, and it stopped.

[mgupta1410]

If you have put the path to stanford-corenlp in CLASSPATH, you can remove classpath (-cp) option altogether. This works for me -

java -Xmx4g edu.stanford.nlp.pipeline.StanfordCoreNLP -file input.txt 

In your ~/.bashrc or ~/.zshrc you can put -

for file in `find /path/to/corenlp -name "*.jar"`;
do export CLASSPATH="$CLASSPATH:`realpath $file`"; done

[stevennic]

Double check also that you've installed the full CoreNLP and not just a language model. If you only have a jar that ends with "-models.jar", like stanford-english-corenlp-2018-10-05-models.jar, you're missing the rest of CoreNLP. I had made the mistake of downloading just a model from their download page, skipping past the big red "Download CoreNLP" button. :)

[LiQiuAo]

hello，I have similar problem，when I use Stanford POSTagger have error。Error: Could not find or load main class edu.stanford.nlp.tagger.maxent.MaxentTagger-model，I don't know why?
windows-version: 10、java-version：1.8.0_65、Python：3.6.3、Stanford coreNLP 3.9.2
、Stanford postagger 3.9.2

[heylukegit]

Double check also that you've installed the full CoreNLP and not just a language model. If you only have a jar that ends with "-models.jar", like stanford-english-corenlp-2018-10-05-models.jar, you're missing the rest of CoreNLP. I had made the mistake of downloading just a model from their download page, skipping past the big red "Download CoreNLP" button. :)

May I ask where is the full CoreNLP? I can only download the version with a single "-model.jar".

[stevennic]

May I ask where is the full CoreNLP? I can only download the version with a single "-model.jar".

https://stanfordnlp.github.io/CoreNLP/download.html
Click the big red "Download CoreNLP" button, not the links to the individual language models in the table beneath it.

[imohammad12]

This works for me: java -mx3g -cp "path/to/stanford-corenlp-4.2.0/*" edu.stanford.nlp.pipeline.StanfordCoreNLP -outputFormat json -file input.txt

[voiteshonok]

That is because of absence StanfordCoreNLPServer class, which is an enrtypoint. Download CoreNLP 4.0.0 jar file from
https://mvnrepository.com/artifact/edu.stanford.nlp/stanford-corenlp/4.0.0
and put in the same directory as model