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Iterate through elements of Java LinkedList using ListIterator example

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  1. /*
  2.   Iterate through elements of Java LinkedList using ListIterator example
  3.   This java example shows how to iterate through elements of Java LinkedList
  4.   using ListIterator's next, hasNext, hasPrevious and previous methods.
  5. */
  6.  
  7. import java.util.ListIterator;
  8. import java.util.LinkedList;
  9.  
  10. public class IterateLinkedListUsingListIteratorExample {
  11.  
  12.   public static void main(String[] args) {
  13.  
  14.     //create LinkedList object
  15.     LinkedList lList = new LinkedList();
  16.    
  17.     //add elements to LinkedList
  18.     lList.add("1");
  19.     lList.add("2");
  20.     lList.add("3");
  21.     lList.add("4");
  22.     lList.add("5");
  23.  
  24.     /*
  25.      * To get an ListIterator object of LinkedList, use
  26.      * ListIterator listIterator() method.
  27.      */
  28.    
  29.     ListIterator itr = lList.listIterator();
  30.    
  31.     System.out.println("Iterating through elements of Java LinkedList using
  32.    ListIterator in forward direction...");
  33.     while(itr.hasNext())
  34.     {
  35.       System.out.println(itr.next());
  36.     }
  37.  
  38.     System.out.println("Iterating through elements of Java LinkedList using
  39.    ListIterator in reverse direction...");
  40.     while(itr.hasPrevious())
  41.       System.out.println(itr.previous());
  42.    
  43.   }
  44. }
  45.  
  46. /*
  47. Output would be
  48. Iterating through elements of Java LinkedList using ListIterator
  49. in forward direction...
  50. 1
  51. 2
  52. 3
  53. 4
  54. 5
  55. Iterating through elements of Java LinkedList using ListIterator
  56. in reverse direction...
  57. 5
  58. 4
  59. 3
  60. 2
  61. 1
  62. */