Cut values inside a list until comma-CodePudding

I have this list

list = [M111111:Example, B22222:Example Extended, T33333:Example]

And I need to get only the code before the ":" for example:

list = [M111111, B22222, T33333]

I tried using the split function but it doesn't work.

CodePudding user response：

Assuming that your array consists of strings like this:

var list = ["M111111:Example", "B22222:Example Extended", "T33333:Example"];

you could use a loop:

for (let i = 0; i < list.length; i  ) {
    list[i] = list[i].slice(0, list[i].indexOf(":"));
}

CodePudding user response：

List<String> firstPart = Stream.of(list).map(s -> s.split(":")[0]).toList();

This will create a Stream of your list and for each element, split it on the : and return the first element, then collect that back into a List<String> that will contain, M111111, B22222, T33333, ...

CodePudding user response：

you can do something like this:

List<String> newList = new ArrayList<>();
list.forEach(s-> newList.add(s.substring(0,s.indexOf(":")));