### Question:
POSTagger extends AbstractTagger { @Override public String tag(String src) { if(src==null||src.length()==0) return src; if(cws==null){ System.out.println("只能处理分好词的句子"); return null; } String[] words = cws.tag2Array(src); if(words.length==0) return src; Instance inst = new Instance(words); doProcess(inst); int[] pred = (int[]) getClassifier().classify(inst).getLabel(0); String[] target = labels.lookupString(pred); String res = format(words, target); return res; } POSTagger(String cwsmodel, String str);  POSTagger(CWSTagger cwsmodel, POSTagger posmodel);  POSTagger(String cwsmodel, String str, Dictionary dict);  POSTagger(String str);  POSTagger(String str, Dictionary dict);  POSTagger(CWSTagger cws, String str);  POSTagger(CWSTagger cws, String str, Dictionary dict, boolean isSetSegDict); void setDictionary(Dictionary dict, boolean isSetSegDict); void removeDictionary(boolean isRemoveSegDict); String[][] tag2Array(String src); String[][][] tag2DoubleArray(String src); @Override String tag(String src); String format(String[] words, String[] target); String[] tagSeged(String[] src); String tagSeged2String(String[] src); String tagSeged2StringALL(String[] src); Set<String> getSupportedTags(); static void main(String[] args); void SetTagType(String lang); public CWSTagger cws; }### Answer:
@Test public void testTagString() { String o1 = pos.tag(s1); System.out.println(o1); }