Get Size of Java LinkedHashSet Example

  1. /*
  2.   Get Size of Java LinkedHashSet Example
  3.   This Java Example shows how to get the size or nubmer of elements stored in
  4.   Java LinkedHashSet object using size method.
  5. */
  6.  
  7. import java.util.LinkedHashSet;
  8.  
  9. public class GetSizeOfJavaLinkedHashSetExample{
  10.  
  11. public static void main(String[] args) {
  12.  
  13. //create LinkedHashSet object
  14. LinkedHashSet lhashSet = new LinkedHashSet();
  15.  
  16. /*
  17.   To get the size of LinkedHashSet use
  18.   int size() method of LinkedHashSet class. It returns the number of elements
  19.   stored in LinkedHashSet object.
  20.   */
  21. System.out.println("Size of LinkedHashSet : " + lhashSet.size());
  22.  
  23. //add elements to LinkedHashSet object
  24. lhashSet.add(new Integer("1"));
  25. lhashSet.add(new Integer("2"));
  26. lhashSet.add(new Integer("3"));
  27.  
  28. System.out.println("Size of LinkedHashSet after addition : " + lhashSet.size());
  29.  
  30. //remove one element from LinkedHashSet using remove method
  31. lhashSet.remove(new Integer("1"));
  32. System.out.println("Size of LinkedHashSet after removal : " + lhashSet.size());
  33. }
  34. }
  35.  
  36. /*
  37. Output would be
  38. Size of LinkedHashSet : 0
  39. Size of LinkedHashSet after addition : 3
  40. Size of LinkedHashSet after removal : 2
  41. */

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