Regex to match continuous pattern of integer then space

Question

I\'m asking the user for input through the Scanner in Java, and now I want to parse out their selections using a regular expression. In essence, I show them an enu

Answer 1

You want integers:

\d+

followed by any number of space, then another integer:

\d+( \d+)*

Note that if you want to use a regex in a Java string you need to escape every \ as \\.