Regular Expressions 101

^start of line

Group 1([\w\d._-]+)

Character Class[\w\d._-]+

+matches at least one character from the set below:

\wany word character

\da digit

.the literal . (46₁₀ / 56₈ / 2E₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 2(\.jar)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

jarthe literal text jar (case sensitive)

$end of line

Global pattern flags

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

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^([\w\d._-]+)(\.jar)$

New

server.jar
invalid&name.jar
another_valid-one.jar
1is.valid.jar
not-valid.jar.zip