Groovy example source code file (GroovyClassLoaderTest.java)

This example Groovy source code file (GroovyClassLoaderTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

class, class, exception, exception, file, groovyclassloadertest, groovyobject, groovyobject, io, metaclass, metaclass, testsupport

The Groovy GroovyClassLoaderTest.java source code

/*
 * Copyright 2003-2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.codehaus.groovy.classgen;

import groovy.lang.GroovyObject;
import groovy.lang.MetaClass;

import java.io.File;


/**
 * Tests dynamically compiling a new class
 *
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 21496 $
 */
public class GroovyClassLoaderTest extends TestSupport {

    public void testCompile() throws Exception {
        Class groovyClass = loader.parseClass(new File("src/test/org/codehaus/groovy/classgen/Main.groovy"));

        System.out.println("Invoking main...");

        GroovyObject object = (GroovyObject) groovyClass.newInstance();

        assertTrue(object != null);

        MetaClass metaClass = object.getMetaClass();
        System.out.println("Metaclass: " + metaClass);

        Class type = object.getClass();
        System.out.println("Type: " + type);

        // invoke via metaclass
        metaClass.invokeMethod(object, "main", null);

        // invoke directly
        object.invokeMethod("main", null);
    }
}