Igor :
I have a String:
String ints = "1, 2, 3";
I would like to convert it to a list of ints:
List<Integer> intList
I am able to convert it to a list of strings this way:
List<String> list = Stream.of("1, 2, 3").collect(Collectors.toList());
But not to list of ints.
Any ideas?
Tunaki :
You need to split the string and make a Stream out of each parts. The method splitAsStream(input) does exactly that:
Pattern pattern = Pattern.compile(", ");
List<Integer> list = pattern.splitAsStream(ints)
.map(Integer::valueOf)
.collect(Collectors.toList());
It returns a Stream<String> of the part of the input string, that you can later map to an Integer and collect into a list.
Note that you may want to store the pattern in a constant, and reuse it each time it is needed.
Guess you like
Origin http://10.200.1.11:23101/article/api/json?id=449028&siteId=1