Regular Expressions 101

Explanation

Pro

^start of line

Group 1(java\s+)

javathe literal text java (case sensitive)

\s+any whitespace character, repeated at least once

Non-Capturing Group(?:\S*-)?

?repeats the group contents below at most once:

\S*any non-whitespace character, repeated any number of times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

v?optionally matches the literal v (118₁₀ / 166₈ / 76₁₆) (case sensitive)

Group version(?<version>(\d+)(\.\d+)?(\.\d+)?(\+\d+)?(-ea(\.\d+)?)?)

Group 3(\d+)

\d+a digit, repeated at least once

Group 4(\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Group 5(\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Group 6(\+\d+)?

?repeats the group contents below at most once:

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

\d+a digit, repeated at least once

Group 7(-ea(\.\d+)?)?

?repeats the group contents below at most once:

-eathe literal text -ea (case sensitive)

Group 8(\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

$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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

26 tokens

Regular Expression

^(java\s+)(?:\S*-)?v?(?<version>(\d+)(\.\d+)?(\.\d+)?(\+\d+)?(-ea(\.\d+)?)?)$

New

java corretto-21.0.2.13.1
java corretto-21.0.2.13
java corretto-21.0.2

java adoptopenjdk-11.0.15+10
java adoptopenjdk-11.0.16+8
java adoptopenjdk-11.0.16+101
java adoptopenjdk-11.0.17+8
java adoptopenjdk-11.0.18+10
java adoptopenjdk-11.0.19+7
java adoptopenjdk-11.0.20+8
java adoptopenjdk-11.0.20+101
java adoptopenjdk-11.0.21+9
java adoptopenjdk-11.0.22+7
java adoptopenjdk-17.0.0+35
java adoptopenjdk-17.0.1+12
java adoptopenjdk-17.0.2+8
java adoptopenjdk-17.0.3+7
java adoptopenjdk-17.0.4+8
java adoptopenjdk-17.0.4+101
java adoptopenjdk-17.0.5+8
java adoptopenjdk-17.0.6+10
java adoptopenjdk-17.0.7+7
java adoptopenjdk-17.0.8+7
java adoptopenjdk-17.0.8+101
java adoptopenjdk-17.0.9+9
java adoptopenjdk-17.0.10+7
java adoptopenjdk-18.0.0+36
java adoptopenjdk-18.0.1+10
java adoptopenjdk-18.0.2+9
java adoptopenjdk-18.0.2+101
java adoptopenjdk-19.0.0+36
java adoptopenjdk-19.0.0-beta+36.0.202208190932
java adoptopenjdk-19.0.1+10
java adoptopenjdk-19.0.2+7
java adoptopenjdk-20.0.0+36
java adoptop