Adding an Array to an Array

[clj89]

Hi everyone,
I have a question with adding an array to another array. I have an array of individual colors and add them all to one list; colorslist. Then I make a new list, a, and its equal to colorslist. Problem happens here. I want to add each individual color array to each array in a. But every time I try to do that I get this error message:

"Exception in thread "main" java.lang.UnsupportedOperationException
at java.util.AbstractList.add(AbstractList.java:131)
at java.util.AbstractList.add(AbstractList.java:91)
at SomethingNew.main(SomethingNew.java:35)"

A feel as though I should do this a different way but not sure how. I've looked at various ways people have added things to lists but nothing that came close to do what I'm trying to do except what I have below. Any suggestions?

      String [] red =  {"r"};
	        String [] blue = {"u"};
	        String [] green = {"g"};
	        String [] yellow ={"y"};
	        String [] white = {"w"};
	        String [] black = {"b"};

	        List<String[]> colorslist = Arrays.asList(red,blue,green,yellow,white,black);

	        List<String[]> a = colorslist;
	        String[] b = blue;
	        String[] c  = green;
	        String[] d  = yellow;
	        String[] e  = white;
	        String[] f  = black;

	        for(String[]  s : a){
	        	a.add(red);
	        }

[Junky]

List<String[]> a = colorslist;

Firstly, that does not give you 2 discrete Lists. It gives you 2 variables pointing at the same List object. Is that what you want?

Secondly the Arrays.asList method returns a fixed length List. I'm not 100% sure but maybe you cannot add to the List.

[clj89]

Yes that is what I wanted. Ultimately there would be six variables, including a, that point to that List object. But each one would add a different color to it. After having tried other ways, like Collections, this one seems, well almost, seemed to work best. And i think your right about it being fixed...

[clj89]

I guess better yet, if this is more clear, how would I add an array to an array that is in an array, without getting an exception? Or that's not possible and I need to rethink this? I've tried using Collections, just an Array, ArrayList, but that error keeps coming up.