InMemoryJavaCompiler | Utility class to compile java source code in memory | Plugin library

package org.xtext.example.mydsl2.tests

import java.lang.reflect.Method
import java.net.URLClassLoader
import org.eclipse.xtext.util.JavaVersion
import org.eclipse.xtext.xbase.testing.InMemoryJavaCompiler
import org.eclipse.xtext.xbase.testing.JavaSource

class SampleXXX {

    def static void main(String[] args) {
        val urls = #[]
        val classLoader = new URLClassLoader(urls)
        val compiler = new InMemoryJavaCompiler(classLoader, JavaVersion.JAVA8)
        val result = compiler.compile(new JavaSource("demo/Demo.java", '''
        package demo;
        public class Demo {
            public static void main(String[] args) throws Exception {
                Class theClass = Class.forName("demo.Demo", false,
                    Thread.currentThread().getContextClassLoader());
            }
        }
        '''))
        val URLClassLoader runcl = new URLClassLoader(#[], result.classLoader)
        (new Thread() {

            override run() {
            val Class mainClazz = runcl.loadClass("demo.Demo")
            val String[] args2 = #["C:\\temp\\memory_a.yyy"]
            val Method mainMethod = mainClazz.getMethod("main", typeof(String[]))
            mainMethod.invoke(null, #[args2])
            }

        }=>[
            contextClassLoader = runcl
        ]).start
    }

}