Multiple Groovy classes in one file when running as a script

Question

I have a project with multiple groovy files, and I have several "tiny" classes that I want to put in a single file.

Basically, here is what I want:

Foo.groovy:

class Foo
{
    Foo() { println "Foo" }
}

Bar.groovy:

class Bar
{
    Bar() { println "Bar" }
}

class Baz
{
    Baz() { println "Baz" }
}

script.groovy:

#!/groovy/current/bin/groovy

new Foo()
new Bar()
new Baz()

And then:

$ groovy ./script.groovy 
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
/home/tmp/script.groovy: 5: unable to resolve class Baz 
 @ line 5, column 1.
   new Baz()
   ^

1 error

Any idea?

Answer 1

When Groovy is run as a script without compilation, then classes are resolved by matching names to a corresponding *.groovy source files, so only classes where the class name matches the source filename can be found.

This is known problem marked as Not a Bug.

As a workaround you can compile classes first with groovyc and then run using java:

groovyc *
java -cp '/some/path/groovy-2.4.3/lib/groovy-2.4.3.jar;.' script
Foo
Bar
Baz