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Replace an element at specified index of Java Vector Example

  1. /*
  2.   Replace an element at specified index of Java Vector Example
  3.   This Java Example shows how to replace an element at specified index of java
  4.   Vector object using set method.
  5. */
  6.  
  7. import java.util.Vector;
  8.  
  9. public class ReplaceElementAtSpecifiedIndexVectorExample {
  10.  
  11.   public static void main(String[] args) {
  12.     //create a Vector object
  13.     Vector v = new Vector();
  14.    
  15.     //Add elements to Vector
  16.     v.add("1");
  17.     v.add("2");
  18.     v.add("3");
  19.    
  20.     /*
  21.       To replace an element at the specified index of Vector use
  22.       Object set(int index, Object obj) method.
  23.       This method replaces the specified element at the specified index in the
  24.       Vector and returns the element previously at the specified position.
  25.     */
  26.     v.set(1,"REPLACED ELEMENT");
  27.  
  28.     System.out.println("Vector contains...");
  29.     //display elements of Vector
  30.     for(int index=0; index < v.size(); index++)
  31.       System.out.println(v.get(index));
  32.    
  33.   }
  34. }
  35.  
  36. /*
  37. Output would be
  38. Vector contains...
  39. 1
  40. REPLACED ELEMENT
  41. 3
  42. */