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vinay_delhi

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How to Reverse HashMap, key becomes values and vice-versa

I have a HashMap with key-values. Sometime, I need to know key for a given value. Could anyone let me know how to do that ?
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applekanna
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applekanna
Assuming you have string for both key and value
     {
      Map.Entry entry = (Map.Entry)i.next();
     System.out.println(entry.getKey() + "/" + entry.getValue());
     String key =  (String) entry.getValue()
     String value = (String) entry.getValue();
   //  if(value.equals("some")
     }