convert string to arraylist <Character> in java

Question

How to convert a String without separator to an ArrayList<Character>.

My String is like this:

String str = "abcd..."

I know one way of doing this is converting the String to char[] first, and then convert the char [] to ArrayList <Character>.

Is there any better way to do this? like converting directly? Considering time and performance, because I am coding with a big database.

Answer 1

You need to add it like this.

String str = "abcd...";
ArrayList<Character> chars = new ArrayList<Character>();
for (char c : str.toCharArray()) {
  chars.add(c);
}