Split string with two brackets

Question

I have a string that comes out like this:

String line = "2022{yyyy}{mm}{dd}";

I want to split it into an arraylist like this:

2022
yyyy
mm
dd

how can i do this?

When you split, you get a string array. Why do you need an array list? Are you sure about the type of the result? — Wiktor Stribiżew, Oct 06 '22 at 08:58

score 2 · Accepted Answer · answered Oct 06 '22 at 05:32

2

One approach:

String line = "2022{yyyy}{mm}{dd}";
String[] parts = line.split("[{}]+");
System.out.println(Arrays.toString(parts));  // [2022, yyyy, mm, dd]

Another possibility might be to do a regex find all on \w+ using a formal pattern matcher.

answered Oct 06 '22 at 05:32

Tim Biegeleisen

thank you very much! and do you know how to split it out this: [2022, {yyyy}, {mm}, {dd}] – hanchao Oct 06 '22 at 05:38
Yes, split on `(?=\{)` – Tim Biegeleisen Oct 06 '22 at 05:40

score 1 · Answer 2 · answered Oct 06 '22 at 07:32

1

Here would be an example approach if you wanted to use four capturing groups:

Having said that, Tim's approach is much simpler and I'd go for that.

answered Oct 06 '22 at 07:32

David542

2 Answers2