Regular Expressions 101

\ban ASCII word boundary

javathe literal text java (case sensitive)

\ban ASCII word boundary

Negative Lookahead(?!\.)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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.

Search reference

Regular Expression

\bjava\b(?!\.)

New

JAVA_VERSION=$("java" -version 2>&1 | awk -F '"' '/version/ {print $2}')

$java -DagentVersion=2.6.0 --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/java.lang.reflect=ALL-UNNAMED -jar

Substitution

/opt/java17