What to make a regular expression that will pull out the IDs of certain users?

Question

Java

I have an array, let's say:

{"Ivanov", "id":7},
{"Sidorov", "id":4},
{"Petrov", "id":3},
{"Petrov", "id":2},
{"Kozlov", "id":9};

It is necessary to pull out only Petrov's ID, without a surname.

Answer 1

I don't know the JAVA syntax... but here's an example regexp:
\{\"Petrov\", \"id\":(\d+)\}
Clearly:
https://regex101.com/r/t6DaXA/1