Java Regex: Evaluate a string against a particular pattern -

i have strings of particular pattern below need validate:

string ="test/<value>" string b = "test/test1/<value>" string c = "test3"; string d = "test4"

where value - can thing i.e alphabets,numeric,symbol,spl characters.

string c , string d pretty straight forward.the issue comes string a,b.

valid strings:

test/12 | test/abc | test/12.39 ... test/test1/12 | test/test1/abc | test/test1/12.30 test3 test4

invalid strings:

test1/12 test/test123/12

test,test1,test3,test4 key words. change in should return me false.

i tried below regex pattern:

pattern  pattern1 = "^(test/(test1/)?[a-za-z0-9]+|test3|test4)?/?$"

it works fine few scenario's i.e

test/123 (pass) test/test1/abc123(pass)

it fails when has symbol,decimal value or spl characters:

test/10.12 (fail) test/test1/@#$$ (fail)  pattern pattern2 = "^(test/(test1/)?[a-za-z0-9/*!@#$%^&*()\"{}_|\\?/<>,.]+|test3|test4)?/?$";

when use above pattern if there change in keyword fails.

test/test1344/123(fail)

i.e if change keyword returns true.expected result false.

please advice how can validate above strings ?

you can use regex:

^(?:test/(?:test1/)?[^/]+|test3|test4)/?$

i replaced [a-za-z0-9] [^/] (any non forward slash character)

Brazell