class ArrayDemo {
  public static void main(String[] args) {
    int[] anArray;

    anArray = new int[3];
       
    anArray[0] = 100;
    anArray[1] = 200;
    anArray[2] = 300;
    
    for(int i=0; i < anArray.length; i++) {
      System.out.println("Element at index " + i + "/" + anArray.length+": " + anArray[i]);
    }
   
    int j=0;
    for(int element: anArray) {      
      System.out.println("Element at index " + (j++) + "/" + anArray.length+": " + element);
    } 
  }
}