Cannot make a static reference to the non-static field :

代码

public class GetWordpairSimilarity {
 public  String dir = "C:/Program Files/WordNet";
 public  JWS ws = new JWS(dir, "3.0");
 public List<SynonymsStruct> JiangAndConrathSimi(List<SynonymsStruct> listsyn){
  JiangAndConrath jcn = ws.getJiangAndConrath();
  System.out.println("Jiang & Conrath\n");
  for(int i = 0;i< listsyn.size();i++)//max
  {
   listsyn.get(i).similarityscore = jcn.max(listsyn.get(i).keyWord, listsyn.get(i).wordSynonyms, "n");
   System.out.println("\nhighest score\t=\t" + jcn.max(listsyn.get(i).keyWord, listsyn.get(i).wordSynonyms, "n") + "\n");
  }
  return listsyn;
 }
 
 public static void main(String args[])
 {
   GetWordpairSimilarity getsim = new GetWordpairSimilarity();
  String objword1 = "use";
  GetSynonyms getSyn = new GetSynonyms();  
  List<SynonymsStruct> result1 =getSyn.getSynonyms(ws.getDictionary(), objword1);
  System.out.println("***********result************");
  getsim.JiangAndConrathSimi(result1);
  for(int i =0;i<result1.size();i++)
  {
   System.out.print(result1.get(i).keyWord+" ");
   System.out.print(result1.get(i).wordSynonyms+" ");
   System.out.println(result1.get(i).similarityscore);
  }
 }
 
}

主函数中是public static ，静态函数不能引用非静态的变量ws，需要在ws 前面加static。