Java Examples - Iterate through HashMap

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Problem Description:

How to iterate through elements of HashMap?

Solution:

Following example uses iterator Method of Collection class to iterate through the HashMap.

import java.util.*;

public class Main {
   public static void main(String[] args) {
      HashMap< String, String> hMap = 
      new HashMap< String, String>();
      hMap.put("1", "1st");
      hMap.put("2", "2nd");
      hMap.put("3", "3rd");
      Collection cl = hMap.values();
      Iterator itr = cl.iterator();
      while (itr.hasNext()) {
         System.out.println(itr.next());
     }
   }
}

Result:

The above code sample will produce the following result.

3rd
2nd
1st


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