public boolean equals(final ArtifactCoordinates obj){
  return this == obj || obj != null && groupId.equals(obj.groupId) && artifactId.equals(obj.artifactId) && version.equals(obj.version) && classifier.equals(obj.classifier);
}

public boolean equals ( final ArtifactCoordinates obj ) { return this == obj || obj != null && groupId . equals ( obj . groupId ) && artifactId . equals ( obj . artifactId ) && version . equals ( obj . version ) && classifier . equals ( obj . classifier ) ; }
determine whether this coordinates object equals the target object .
