Exception in thread "main" java.lang.NoClassDefFoundError: edu/stanford/nlp/pipeline/StanfordCoreNLP

Question

I downloaded the stanford corenlp zip file from https://stanfordnlp.github.io/CoreNLP/ Then unzipped it and cd'ed into it. Now I tried running the following java file. javac -cp "*" SentimentAnalysis.java works fine but java SentimentAnalysis throws error that Exception in thread "main" java.lang.NoClassDefFoundError: edu/stanford/nlp/pipeline/StanfordCoreNLP.

import edu.stanford.nlp.pipeline.*;

import java.util.*;

public class SentimentAnalysis {

public static void main(String[] args) {

    // creates a StanfordCoreNLP object, with POS tagging, lemmatization, NER, parsing, and coreference resolution
    Properties props = new Properties();
    props.setProperty("annotators", "tokenize, ssplit, pos, lemma, ner, parse, dcoref");
    StanfordCoreNLP pipeline = new StanfordCoreNLP(props);

    // read some text in the text variable
    String text = "Hello madam, this is a dam";

    // create an empty Annotation just with the given text
    Annotation document = new Annotation(text);

    // run all Annotators on this text
    pipeline.annotate(document);

}

}

The error is as follows

    Exception in thread "main" java.lang.NoClassDefFoundError: edu/stanford/nlp/pipeline/StanfordCoreNLP
    at SentimentAnalysis.main(SentimentAnalysis.java:39)
Caused by: java.lang.ClassNotFoundException: edu.stanford.nlp.pipeline.StanfordCoreNLP
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 1 more

Have you researched what `java.lang.NoClassDefFoundError` means? — Thorbjørn Ravn Andersen, Nov 07 '17 at 21:17

recursion · Answer 1 · 2017-11-07T22:33:04.457

0

Verify jar using below step

Download Java decomiler from http://jd.benow.ca/
open jar via downloaded decompiler
Verify if required class StanfordCoreNLP exist
If class exist follow this post how to run Java program including jar

edited Nov 07 '17 at 22:33

answered Nov 07 '17 at 21:21

recursion

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Sentiment Analysis is the name of the Java file I am trying to run – s.dutta Nov 07 '17 at 21:34
Got it does my suggestion helped? – recursion Nov 07 '17 at 22:33
Actually the issue is the stanford corenlp class is not being found in my own function. – s.dutta Nov 08 '17 at 15:47
Nodeferror means classes are present at compile time but missing at runtine – recursion Nov 08 '17 at 16:32
but I included the .jars file in my classpath using -cp "*" – s.dutta Nov 08 '17 at 18:25
Print your classpath and try giving fully qualified path of jar – recursion Nov 08 '17 at 18:27

Exception in thread "main" java.lang.NoClassDefFoundError: edu/stanford/nlp/pipeline/StanfordCoreNLP

1 Answers1