replace Vector element with new one

static void foo() {

  Vector<String[]> vector = new Vector<String[]>();

  String array1[] = { "word1", "word2", "word3" };
  String array2[] = { "word4", "word5", "word6" };
  String array3[] = { "word7", "word8", "word9" };

  vector.add(array1);
  vector.add(array2);

  printall(vector);
  
  vector.set(1, array3);
 
  printall(vector);

 }

 static void printall(Vector<String[]> vector) {

  System.out.println("\n");

  for (int i = 0; i < vector.size(); i++) {

   for (int j = 0; j < vector.get(i).length; j++) {
    System.out.println(vector.get(i)[j]);
   }

  }

 }
}