Check if a particular element exists in Java LinkedHashSet Example

  1. /*
  2.   Check if a particular element exists in Java LinkedHashSet Example
  3.   This Java Example shows how to check whether an elements is contained in Java
  4.   LinkedHashSet using contains method.
  5. */
  6.  
  7. import java.util.LinkedHashSet;
  8.  
  9. public class CheckElementLinkedHashSetExample {
  10.  
  11. public static void main(String[] args) {
  12.  
  13. //create object of LinkedHashSet
  14. LinkedHashSet lhashSet = new LinkedHashSet();
  15.  
  16. //add elements to LinkedHashSet object
  17. lhashSet.add(new Integer("1"));
  18. lhashSet.add(new Integer("2"));
  19. lhashSet.add(new Integer("3"));
  20.  
  21. /*
  22.   To check whether a particular value exists in LinkedHashSet use
  23.   boolean contains(Object value) method of LinkedHashSet class.
  24.   It returns true if the LinkedHashSet contains the value, otherwise false.
  25.   */
  26.  
  27. boolean blnExists = lhashSet.contains(new Integer("3"));
  28. System.out.println("3 exists in LinkedHashSet ? : " + blnExists);
  29.  
  30. }
  31. }
  32.  
  33. /*
  34. Output would be
  35. 3 exists in LinkedHashSet ? : true
  36. */

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