How to map values in a map in Java 8? -

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

  • 2 जवाब

    मेरे पास एक मानचित्र & lt; स्ट्रिंग, पूर्णांक & gt; । > इसे से एक मानचित्र & lt; स्ट्रिंग, स्ट्रिंग & gt; प्राप्त करने का एक आसान तरीका क्या है?

    आसान करके, मुझे इसका अर्थ नहीं है: 

      मानचित्र & lt; स्ट्रिंग, स्ट्रिंग & gt; मैप किया गया = नया हैशमैप & lt; & gt; (); के लिए (स्ट्रिंग कुंजी: originalMap.keySet ()) {mapped.put (key, originalMap.get (key) .toString ()); }   
     बल्कि कुछ एक लाइनर की तरह:  
      मानचित्र & lt; स्ट्रिंग, स्ट्रिंग & gt; मैप किए गए = मूलमैप.मॅप वैल्यू (v - & gt; v.toString ());   
     लेकिन स्पष्ट रूप से कोई भी तरीका नहीं  mapValues ​​ है।   
     
     
     आपको प्रविष्टियों को स्ट्रीम करने और उन्हें एक नए मानचित्र में एकत्र करने की आवश्यकता है:  
      मानचित्र & lt; स्ट्रिंग, स्ट्रिंग & gt; परिणाम = map.entrySet ()। स्ट्रीम () .collect (toMap (Entry :: getKey, e -> String.valueOf (e.getValue ()));    < / html>

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