Question

I have the below string

String srcString = "String1.String2.String3";

I want to split “srcString” on “.”

Using srcString.split(“.”) is matching all the characters.

What is the regex to match a “.” ?

Answer 1

In regex dot is special character representing any character except line separator (to also make it match line separators use Pattern.DOTALL flag).

Anyway, use split("\\.")

Explanation:

• to escape . we can add \ before it so we end up with regex \.
• now since \ is also special in string literal " " we also need to escape it there, so to express \. we need to write it as "\\.".