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Reverse order of all elements of Java Vector Example

  1. /*
  2.   Reverse order of all elements of Java Vector Example
  3.   This java example shows how to reverse the order of all elements of Java Vector
  4.   using reverse method of Collections class.
  5. */
  6.  
  7. import java.util.Vector;
  8. import java.util.Collections;
  9.  
  10. public class ReverseOrderVectorExample {
  11.  
  12.   public static void main(String[] args) {
  13.  
  14.     //create a Vector object
  15.     Vector v = new Vector();
  16.    
  17.     //Add elements to Vector
  18.     v.add("A");
  19.     v.add("B");
  20.     v.add("C");
  21.     v.add("D");
  22.     v.add("E");
  23.    
  24.     System.out.println("Before Reverse Order, Vector Contains : " + v);
  25.    
  26.     /*
  27.       To reverse the order of all elements of Java Vector use,
  28.       static void reverse(List list) method of Collections class.
  29.      
  30.       This method reverse the order of elements of specified list.
  31.     */
  32.    
  33.     Collections.reverse(v);
  34.    
  35.     System.out.println("After Reverse Order, Vector Contains : " + v);
  36.    
  37.   }
  38. }
  39.  
  40. /*
  41. Output would be
  42. Before Reverse Order, Vector Contains : [A, B, C, D, E]
  43. After Reverse Order, Vector Contains : [E, D, C, B, A]
  44. */