Error building Stanford CoreNLP

Question

When I build Core-NLP on my own, I get the following message:

incompatible types; no instance(s) of type variable(s) VALUE exist so that VALUE conforms to Map<Integer,String>

The offending line:

Map<Integer,String> roleMap = ((CoreLabel)t1.label()).get(CoreAnnotations.CoNLLSRLAnnotation.class);

The offending function:

  @SuppressWarnings("unchecked")
  public <VALUE, KEY extends Key<CoreMap, VALUE>>
    VALUE get(Class<KEY> key) {
    for (int i = size; i > 0; ) {
   if (keys[--i] == key) {
    return (VALUE)values[i];
  }
}
    return null;
}

I really have no clue how to fix this. I'm trying to build CoreNLP with Maven so I can use it easily in my project. Ideas?

Answer 1

Where are you grabbing your source from?

I had no problem building from the master branch on their github repository. I'm using java 1.8, which is required in their maven pom.