Output ArrayList to String without [,] (brackets) appearing

Question

OK, so I have an ArrayList that I need to return as a String. Right now I am using this approach:

List customers = new ArrayList<>();
L         


        

Answer 1

I think the best solution to print list without brackets and without any separator( for java 8 and higher )

String.join("", YOUR_LIST);

You can alos you you own delimiter to separate printing elements.

String.join(", \n", YOUR_LIST);

example above separate each list element with comma and new line.

Answer 2

Java 8 version

List<Integer> intList = new ArrayList<Integer>();
intList.add(1);
intList.add(2);
intList.add(4);
System.out.println(intList.stream().map(i -> i.toString()).collect(Collectors.joining(",")));

Output: 1,2,4

Answer 3

You could try to replace the '[' and ']' with empty space

String list = Arrays.toString(customers.toArray()).replace("[", "").replace("]", "");

Answer 4

You can use the method substring() to remove starting and ending brackets without tampering any entries in the ArrayList. I used something like this to convert a ArrayList<String> to String

String str = list.toString().substring(1, list.toString().length() - 1);