ArrayList to CharSequence[]

You can use List#toArray(T[]) for this.

CharSequence[] cs = list.toArray(new CharSequence[list.size()]);

Here’s a little demo:

List<String> list = Arrays.asList("foo", "bar", "waa");
CharSequence[] cs = list.toArray(new CharSequence[list.size()]);
System.out.println(Arrays.toString(cs)); // [foo, bar, waa]