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Replace an Element of LinkedList Java example

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  1. /*
  2.   Replace an Element of LinkedList Java example
  3.   This java example shows how to replace a LinkedList element at specified index
  4.   using set method of Java LinkedList class.
  5. */
  6.  
  7. import java.util.LinkedList;
  8.  
  9. public class LinkedListReplaceElementExample {
  10.  
  11.   public static void main(String[] args) {
  12.  
  13.     //create LinkedList object
  14.     LinkedList lList = new LinkedList();
  15.    
  16.     //add elements to LinkedList
  17.     lList.add("1");
  18.     lList.add("2");
  19.     lList.add("3");
  20.     lList.add("4");
  21.     lList.add("5");
  22.    
  23.     System.out.println("LinkedList contains : " + lList);
  24.    
  25.     /*
  26.      * To replace an element of LinkedList at specified index, use
  27.      * Object set(int index, Object element) method.
  28.      *
  29.      * It replaces specified element at specified index in the LinkedList and
  30.      * returns the element previously at the specified index.
  31.      */
  32.          
  33.      lList.set(3, "Replaced");
  34.      System.out.println("After replacing 4, LinkedList contains : " + lList);
  35.    
  36.    
  37.   }
  38. }
  39.  
  40. /*
  41. Output would be
  42. LinkedList contains : [1, 2, 3, 4, 5]
  43. After replacing 4, LinkedList contains : [1, 2, 3, Replaced, 5]
  44. */