CODEWITHSUNDEEP
javaregexstring
Predoryx
Predoryx

Reputation: 51

Java : String.matches()

I want to determine whether a string consists of only two words, with one space character between them. The first word should only include alphanumeric characters. The second should include only numbers. An example is: asd 15

I would like to use String.matches. How can I do this or which regex should I use?

Thanks in advance.

Upvotes: 3

Views: 11132

Answers (3)

Kannan
Kannan

Reputation: 136

Try this out: String pattern = new String("^[0-9]*[A-Za-z]+ [0-9]+$")

Upvotes: 0

MByD
MByD

Reputation: 137412

You look for something like:

String regex = "^[A-Za-z]+ [0-9]+$";

Explanation:

^         the beginning of the string (nothing before the next token)
[A-Za-z]+ at least one, but maybe more alphabetic chars (case insensitive)
          a single space (hard to see :) )
[0-9]+    at least one, but maybe more digits
$         end of the string (nothing after the digits)

Upvotes: 7

Juan Alberto López Cavallotti
Juan Alberto López Cavallotti

Reputation: 4704

You can give this regex a try

"[A-Za-z0-9]+\\s[0-9]+"

Upvotes: 4

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