https://www.biostars.org/p/9549996/ nextflow class java groovy

README.md

with include{MyTest}

Cannot find a component with name 'MyTest' in module: .../20230103.nf.class/./class.nf

 -- Check script 'test.nf' at line: 2 or see '.nextflow.log' file for more details

without include{MyTest}

No such variable: MyTest

class.nf

public class MyTest {

private static MyTest INSTANCE = new MyTest();

private MyTest() {
	}

public static MyTest getInstance() {
	return INSTANCE;
	}
public String getMessage() {
	return "Hello world";
	}
}

process SAY {
	input:
		val(msg)
	script:
	"""
	echo "${msg}"
	"""
	}

test.nf

include {SAY;MyTest} from './class.nf'

nextflow.enable.dsl=2

workflow {
	SAY( MyTest.getInstance().getMessage() )
}