java - Hashtable's Value doesn't increaing -

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निम्न जावा कोड: 

  सार्वजनिक वर्ग के testCSVDataToMap {सार्वजनिक स्थिर हैशटेबल & lt; स्ट्रिंग, पूर्णांक & gt ; TestTable = नया हैशटेबल & lt; & gt; (); सार्वजनिक स्थिर शून्य मुख्य (स्ट्रिंग [] आर्ग्स) IOException फेंकता {BufferedReader रीडर = नया BufferedReader (नया FileReader ("test.csv")); स्ट्रिंग रेखा; जबकि ((रेखा = रीडर। रीडलाइन ())! = नल) {स्ट्रिंग प्रतीक = "0"; यदि (testTable.contains (प्रतीक)) {int value = testTable.get (प्रतीक); मूल्य ++; testTable.put (प्रतीक, मान); } Else {System.out.println ("डैश!"); testTable.put (प्रतीक, 1); }} System.out.println (testTable); }}   
 में आउटपुट है:  
  डैश! पानी का छींटा! पानी का छींटा! पानी का छींटा! {0 = 1}   
 .csv फ़ाइलों को पार्स किए जाने पर कुंजी '0' का मूल्य क्यों नहीं बढ़ता? टेस्टटेबल (एक हैशटेबल) में, इसे (0,1) के साथ आरंभ किया जाता है, और मान बढ़ते रहना चाहिए, क्योंकि प्रतीक हमेशा '0' की कुंजी के रूप में पहचाना जाता है।   
 
 
 आप उपयोग कर रहे हैं, जो यह निर्धारित करता है कि तर्क  हैशटेबल  में एक मान के रूप में मौजूद है, कुंजी के रूप में नहीं है क्योंकि यह नहीं मिला है, आप  put  ting  1  अधिक से अधिक हैं।  
 इसके बजाय का उपयोग करें, जो निर्धारित करता है कि तर्क कुंजी के रूप में मौजूद है या नहीं।  
  यदि (testTable.containsKey (प्रतीक)) {

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