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error using snowball in lucene

Exception in thread "main" java.lang.NoSuchMethodError: org.apache.lucene.analysis.snowball.SnowballAnalyzer.setOverridesTokenStreamMethod(Ljava/lang/Class;)V

at org.apache.lucene.analysis.snowball.SnowballAnalyzer.<init>(SnowballAnalyzer.java:46)

at org.apache.lucene.analysis.snowball.SnowballAnalyzer.<init>(SnowballAnalyzer.java:61)

at lucene.similarity.rank_stop.main(rank_stop.java:34)

       

Analyzer analyzers = new SnowballAnalyzer(Version.LUCENE_30,"English",StopAnalyzer.ENGLISH_STOP_WORDS_SET);

 

private static String analyze(String text) throws IOException {

        int i=0;

        String result="" ;

        String[] term = new String[100] ;

        TokenStream stream = analyzers.reusableTokenStream("contents",new StringReader(text));

        CharTermAttribute charTermAttribute = stream.getAttribute(CharTermAttribute.class);

        while (stream.incrementToken()) {      

            term[i] = charTermAttribute.toString();  

            result+=term[i]+" " ;

            i++;

        }

        return result;  

    }

}

  line2 = analyze(line2); // here line2 is a string that has to be analyzed