Regular Expressions 101

1st Alternative(?<!_)_{1,2}(?=_[^_])

Negative Lookbehind(?<!_)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

_{1,2}the literal _ (95₁₀ / 137₈ / 5F₁₆) , repeated between 1 and 2 times

Positive Lookahead(?=_[^_])

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Negated Character Class[^_]

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

2nd Alternative(?<=\.jav)a$

Positive Lookbehind(?<=\.jav)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

javthe literal text jav (case sensitive)

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(?<!_)_{1,2}(?=_[^_])|(?<=\.jav)a$

New

remote_execute___jenkin%.java
remtoe__plat_jenk.java
remtoe_plat_jenk.java
remtoe___plat_jenk.testa
remote_execute____jenkin%.java

remote_execute___jenkin%.java
remtoe__plat_jenk.java
remtoe_plat_jenk.java
remtoe___plat_jenk.testa
remote_execute____jenkin%.java