how to get numbers separated by comma entered in a

Question

how could I get values entered in a single line by the user eq: 1, 3, 400, 444, etc.. into an array. I know I must declare a separator in this case the comma ",". Could someone help

Thanks

Answer 1

String input = "1, 3, 400, 444";
String[] numbers = input.split("\\s*,\\s*");

You can use much simpler separator in String.split() like "," but the more complex "\\s*,\\s*" additionally strips whitespaces around comma.

Answer 2

String input = "1, 3, 400, 444";
String[] numbers = input.split("\\s*,\\s*");

It's the right answer, "\\s*,\\s*" is a regular expression, regex is very useful for the string parsing.

Answer 3

Try this:

String line = "1, 3, 400, 444";

String[] numbers = line.split(",\\s+");
int[] answer = new int[numbers.length];

for (int i = 0; i < numbers.length; i++)
    answer[i] = Integer.parseInt(numbers[i]);

Now answer is an array with the numbers in the string as integers. The other answers just split the string, if you need actual numbers you need to convert them.

System.out.println(Arrays.toString(answer));
> [1, 3, 400, 444]

Answer 4

You want to use split:

userInput.split(",");

Answer 5

String line = "1, 3, 400, 444";
for(String s : line.split(","))
   System.out.println(s);