Voir aussi :

• https://developers.redhat.com/articles/2023/07/06/how-use-debezium-smt-groovy-filter-routing-events

#! /usr/bin/env groovy
 
/* 
This is an example
*/
 
println "Hello World !"

/*
#from java.util import Date
#from java.text import SimpleDateFormat
*/
 
import java.util.Date
import java.text.SimpleDateFormat

test.groovy

#! /usr/bin/env groovy
 
println "Test1"
 
class echo1 {
        def name;
        String hello() {
                println "Test2"
                return name
        }
}

groovyc test.groovy 

$ strings test.class |grep -i test
test
test.groovy
Ltest;
Test1

$ file *.class
echo1.class: compiled Java class data, version 49.0 (Java 1.5)
test.class:  compiled Java class data, version 49.0 (Java 1.5)

$ groovy --classpath=. test
Test1
$ groovy --classpath=. test.groovy
Test1

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/usr/share/groovy/lib/groovy-2.4.21.jar) to method java.lang.Object.finalize()
WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.reflection.CachedClass
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

$ java -cp . test
Error: Could not find or load main class test
Caused by: java.lang.NoClassDefFoundError: groovy/lang/Script

java -cp /usr/share/groovy/lib/groovy-2.4.21.jar:$PWD test

$ java -cp /usr/share/groovy/lib/groovy-2.4.21.jar:$PWD echo1
Error: Main method not found in class echo1, please define the main method as:
   public static void main(String[] args)
or a JavaFX application class must extend javafx.application.Application

Voir : https://www.yawintutor.com/main-method-not-found-javafx-application-class/

test.groovy

#! /usr/bin/env groovy
 
package com.plop;
 
public class Hello {
        public static void main(String[] args) {
                System.out.println("Hello World");
        }
}

java -cp /usr/share/groovy/lib/groovy-2.4.21.jar:$PWD com/plop/Hello