How to create a regex for accepting only alphanumeric characters

Question

Possible Duplicate    Regular Expression for alphanumeric and underscores       How to create a regex for accepting only alphanumeric characters   Thanks

User · Answer

Only ASCII or are other characters allowed too?

^\w*$

restricts (in Java) to ASCII letters/digits und underscore,

^[\pL\pN\p{Pc}]*$

also allows international characters/digits and "connecting punctuation".

User · Answer

a-zA-Z0-9  will only match ASCII characters  it won t match  String target   new String  A      u00ea      u00f1                                   u00fc     C      If you also want to match unicode characters   String pat        p L 0-9

User · Answer

see http   download oracle com javase 1 5 0 docs api java util regex Pattern html  for example  A-Za-z0-9

User · Answer

Try below Alphanumeric regex     a-zA-Z0-9         - Start of string   a-zA-Z0-9   - multiple characters to include    - End of string  See more  http   docs oracle com javase 7 docs api java util regex Pattern html

User · Answer

Use this   a-zA-Z0-9      See here for more info

User · Answer

try with  w  http   download oracle com javase tutorial essential regex pre char classes html

[java] How to create a regex for accepting only alphanumeric characters?

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