Another way to replicate Java collections __java

Question:

Hi

I want to copy a list<integer> to a arraylist<integer> but I can ' t seem to is able to does so ... I don ' t want to cast it ... Below is My Code ... Help


list<integer> data = some data;
arraylist<integer> datacopy = new arraylist<integer> ();
Collections.copy (datacopy, data);


I keep getting the following exception:

Exception in thread ' main ' Java.lang.IndexOutOfBoundsException:Source does not fit in dest

Answer:

Let a ArrayList constructor do job:

Java Code:

1	arraylist<integer> datacopy = newarraylist<integer> (data);

Kind Regards,

Jos

Even can use the AddAll (Collection C) method of ArrayList as. Something like,
Java Code:

1	Datacopy.addall (data);

Goldest

My Code below:

Import java.util.*;
	public class Algorithms1 {private character[] ch = {' P ', ' C ', ' M '};//private character[] CHN = new CHARACTER[3];
	Private List <character>list;
	
	Private List <character>copyoflist;
	Public Algorithms1 () {list = arrays.aslist (CH);
		
		Copyoflist = Arrays.aslist (CHN);
		System.out.println ("Initial List:");
		
		print (list);
		Collections.reverse (list);
		System.out.println ("After calling reverse:");
		
		
		print (list); /** * Use Collections.copy (copyoflist, list), then there will be types of competent mismatch of the exception * then we can copy the array also use the ArrayList constructor to implement * Of course, you have to use the Copy method to use a single line
		The contents of the annotation can also be * This example mainly shows that replication does not rigidly adhere to the Copy method * Sometimes with the constructor, sometimes addall also become * *//collections.copy (copyoflist, list);
		Copyoflist = new ArrayList (list);
		SYSTEM.OUT.PRINTLN ("after copying");
		
		Print (copyoflist);
		Collections.fill (list, ' R ');
		System.out.println ("After calling fill:");
		
		
		
	print (list); List<character> listref {System.out.print ("The List is:"));
		for (Character list:listref) {System.out.printf ("%s", list);
		
		} System.out.println ();
		Compare (LISTREF);
	System.out.println (); public void Compare (List<character> listref) {System.out.printf ("Max:%s, Min:%s\n", Collections.max (LIS
	Tref), Collections.min (Listref));
	public static void Main (string[] argc) {new Algorithms1 ();
 }
}