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Copy all elements of Java Vector to an Object Array Example

  1. /*
  2.   Copy all elements of Java Vector to an Object Array Example
  3.   This Java Example shows how to copy all elements of Java Vector object to an
  4.   array using copyInTo method.
  5. */
  6.  
  7. import java.util.Vector;
  8.  
  9. public class CopyElementsOfVectorToArrayExample {
  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.     v.add("4");
  20.     v.add("5");
  21.    
  22.     //declare an array to hold elements of Vector
  23.     Object[] objArray = new Object[5];
  24.    
  25.     /*
  26.       To copy all elements of java vector object into array use
  27.       void copyInTo(Ojbect[] obj) method. Here obj is an array into which
  28.       elements will get copied.
  29.       Please note that the array should be big enough to hold all elements of
  30.       java vector object. If not, ArrayIndexOutOfBoundException would be thrown.
  31.     */
  32.    
  33.     v.copyInto(objArray);
  34.    
  35.     //display contents of Object array
  36.     System.out.println("Vector elements are copied into an Array.
  37.                                                      Now Array Contains..");
  38.     for(int index=0; index < objArray.length ; index++)
  39.       System.out.println(objArray[index]);
  40.   }
  41. }
  42.  
  43. /*
  44. Output would be
  45. Vector elements are copied into an Array. Now Array Contains..
  46. 1
  47. 2
  48. 3
  49. 4
  50. 5
  51. */