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Remove specified element from Java LinkedHashSet example

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  1. /*
  2.   Remove specified element from Java LinkedHashSet example
  3.   This Java Example shows how to remove a specified object or element
  4.   contained in Java LinkedHashSet object using remove method.
  5. */
  6.  
  7. import java.util.LinkedHashSet;
  8.  
  9. public class RemoveSpecifiedElementFromLinkedHashSetExample {
  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.     System.out.println("LinkedHashSet before removal : " + lhashSet);
  22.    
  23.     /*
  24.       To remove an element from Java LinkedHashSet object use,
  25.       boolean remove(Object o) method.
  26.       This method removes an element from LinkedHashSet if it is present and returns
  27.       true. Otherwise remove method returns false.
  28.     */
  29.    
  30.     boolean blnRemoved = lhashSet.remove(new Integer("2"));
  31.     System.out.println("Was 2 removed from LinkedHashSet ? " + blnRemoved);
  32.    
  33.     System.out.println("LinkedHashSet after removal : " + lhashSet);
  34.   }
  35. }
  36.  
  37. /*
  38. Output would be
  39. LinkedHashSet before removal : [1, 2, 3]
  40. Was 2 removed from LinkedHashSet ? true
  41. LinkedHashSet after removal : [1, 3]
  42. */