Groovy#
Official Site https://groovy-lang.org
Eclipse#
https://groovy-lang.org/ides.html > https://github.com/groovy/groovy-eclipse > https://github.com/groovy/groovy-eclipse/wiki > Install URL for Eclipse 4.19 (2021-03) = https://dist.springsource.org/release/GRECLIPSE/e4.19 > choose Main Package > Eclipse Groovy Development Tools 4.1.0.v202103311613... Note: "Maven Support" will cause Eclipse start failure > Restart > New Project ...
https://groovy.apache.org/download.html > latest stable (3.0.7) > binary
Explorer > PC > right click > properties > Advanced system settings > Environment Variables > New > "GROOVY_HOME" = C:\lang\groovy\groovy-3.0.7 > Mark Path > Edit > New > "%GROOVY_HOME%\bin"
Note: add GROOVY_HOME and edit path both at user or system level ! Check cmd > groovy -v Console: - stop printing all variables with a final "return"
Turn off warnings: --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED