Java: How to replace all occurances of a character if and only if followed by some other character

Question

In particular: I want to replace all occurances of a full stop \. with a full stop plus white space \.\s if the full stop is immediately followed by an upper case character [A-Z].

Any suggestions? thanks

Answer 1

You can try the regex s/\.([A-Z])/. \1/g, like so:

myString.replaceAll("\\.([A-Z])", ". $1");

For more, see the Pattern class and String.replaceAll. Note that backslashes need to be escaped themselves, hence the double backslashes.

Answer 2

yourstring.replaceAll("\\.([A-Z])",". $1")

Answer 3

why not use positive lookahed?

(\\\.)(?=[A-Z])