Adding elements to a plurality of collection

/ * 
    - java.utils.Collections is a collection of tools for the collection operation. Part follows: 
        - public static <T> Boolean the addAll (Collection <T> C, T ... Elements): add some elements to the collection. 
        - public static void shuffle (<? > List list) out of order: disrupt the order of collection. 
 * / 
Public class Demo01Collections { 
    public static void main (String [] args) { 
        the ArrayList <String> = new new List the ArrayList <> (); 
        // add to the collection of a plurality of elements 
        /*list.add("a "); 
        List.add ( "B"); 
        List.add ( "C"); 
        List.add ( "D"); 
        List.add ( "E"); * / 

        // public static <T> Boolean the addAll (Collection < T> c, T ... elements) : add some elements to the collection. 
        Collections.

        System.out.println (List); // [A, B, C, D, E] 

        // public static void shuffle (List List <?>) Out of sequence: sequence set upset. 
        Collections.shuffle (List); 
        System.out.println (List); // [B, D, C, A, E], [B, D, C, A, E] 
    } 
}