Converting ArrayList of Characters to a String?

Question

How to convert an ArrayList to a String in Java? The toString method returns it as [a,b,c] string - I wa

Answer 1

Here a possible one-line solution using Java8 streams.

a) List of Character objects to String :

String str = chars.stream().map(e->e.toString()).reduce((acc, e) -> acc  + e).get();

b) array of chars (char[] chars)

String str = Stream.of(chars).map(e->new String(e)).reduce((acc, e) -> acc  + e).get();

UPDATE (following comment below):

a) List of Character objects to String :

String str = chars.stream().map(e->e.toString()).collect(Collectors.joining());

b) array of chars (char[] chars)

String str = Stream.of(chars).map(e->new String(e)).collect(Collectors.joining());