Find Minimum element of Java HashSet : HashSet « Collections Data Structure « Java

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Java » Collections Data Structure » HashSet   Find Minimum element of Java HashSet        import java.util.Collections; import java.util.HashSet; public class Main {   public static void main(String[] args) {     HashSet<Long> hashSet = new HashSet<Long>();     hashSet.add(new Long("9"));     hashSet.add(new Long("4"));     hashSet.add(new Long("2"));     hashSet.add(new Long("2"));     hashSet.add(new Long("3"));     Object obj = Collections.min(hashSet);     System.out.println("Minimum Element of Java HashSet is : " + obj);   } }                                 Related examples in the same category 1. Add values to HashSet 2. HashSet implementation of set 3. Generic collection conversion: HashSet and ArrayList 4. Remove one set from another set 5. Remove element from HashSet 6. Find maximum element of Java HashSet 7. Get Enumeration over Java HashSet 8. Get Synchronized Set from Java HashSet 9. Check if a particular element exists in Java HashSet 10. Copy all elements of Java HashSet to an Object Array 11. Get Size of Java HashSet 12. Iterate through elements of Java HashSet 13. Integer value set 14. Listing the Elements of a Collection(iterate over the elements of set or list) 15. Remove specified element from Java HashSet 16. Remove all elements from Java HashSet 17. Convert array to Set 18. Implements a HashSet where the objects given are stored in weak references 19. Convert an ArrayList to HashSet 20. Create an array containing the elements in a set 21. Duplicate elements are discarded 22. Convert Set into array 23. A memory-efficient hash set. 24. Compact HashSet 25. Coarse-grained hash set. 26. Concurrent hash set that allows the lock array to be resized. 27. A CompactHashSet implements the set interface more tightly in memory and more efficiently than Java's java.util.HashSet. 28. Concurrent HashSet