java - Efficent collection to associate a key with multiple value Objects -

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इस सवाल का पहले से ही एक उत्तर है: < / P>

  • 15 जवाब

    यह कोई भी कुशल संग्रह है कई मूल्यों के साथ एक कुंजी को संबद्ध करें, जैसे कुछ 

      नया हैशमैप & lt; K, V, V & gt; ();   
     उदाहरण:  
      नया हैशमॉप & lt; लांग, सूची & lt; ग्राहक वीओ & gt ;, सूची & lt; सुविधाइंफो & gt; & gt; ();   
     अग्रिम धन्यवाद!   
     
     
     एक नज़र डालें - ऐसा लगता है कि आप क्या कर रहे हैं:  
      मल्टीमैप एमएमएच = नया मल्टीहैशमैप (); Mhm.put (कुंजी, "ए"); Mhm.put (कुंजी, "बी"); Mhm.put (कुंजी, "सी"); संग्रह coll = (संग्रह) mhm.get (कुंजी);   
     वैकल्पिक रूप से, आप किसी भी तरह के संग्रह को एक नियमित मानचित्र में चिपका सकते हैं, उदाहरण:  
      मानचित्र & lt; कुंजी, सेट & lt; मान & gt; & gt; myMap;

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