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Find maxmimum element of Java HashSet Example

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  1. /*
  2.   Find maxmimum element of Java HashSet Example
  3.   This java example shows how to find a maximum element of Java HashSet using
  4.   max method of Collections class.
  5. */
  6.  
  7. import java.util.HashSet;
  8. import java.util.Collections;
  9.  
  10. public class FindMaximumOfHashSetExample {
  11.  
  12.   public static void main(String[] args) {
  13.    
  14.     //create a HashSet object
  15.     HashSet hashSet = new HashSet();
  16.    
  17.     //Add elements to HashSet
  18.     hashSet.add(new Long("923740927"));
  19.     hashSet.add(new Long("4298748382"));
  20.     hashSet.add(new Long("2374324832"));
  21.     hashSet.add(new Long("2473483643"));
  22.     hashSet.add(new Long("32987432984"));
  23.    
  24.     /*
  25.        To find maximum element of Java HashSet use,
  26.        static Object max(Collection c) method of Collections class.
  27.      
  28.        This method returns the maximum element of Java HashSet according to
  29.        its natural ordering.
  30.     */
  31.    
  32.     Object obj = Collections.max(hashSet);
  33.    
  34.     System.out.println("Maximum Element of Java HashSet is : " + obj);
  35.   }
  36. }
  37. /*
  38. Output would be
  39. Maximum Element of Java HashSet is : 32987432984
  40. */