Embedding Groovy

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Tutorial: Embedding Groovy

Embedding Groovy Groovy has been designed to be very lightweight and easy to embed into any Java application or system. BSF to embed any scripting language into your Java code; however Groovy offers a lighter weight and closer integration. There are

Tutorial Details:

the GroovyClassLoader to load classes dynamically into a Java program and execute them directly. The following Java code shows an example...

ClassLoader parent = getClass().getClassLoader();
GroovyClassLoader loader = new GroovyClassLoader(parent);
Class groovyClass = loader.parseClass(new File(\"src/test/groovy/script/HelloWorld.groovy\"));// lets call some method on an instance
GroovyObject groovyObject = (GroovyObject) groovyClass.newInstance();
Object[] args = {};
groovyObject.invokeMethod(\"run\", args);

GroovyClassLoader gcl = new GroovyClassLoader();
Class clazz = gcl.parseClass(myStringwithGroovyClassSource \"SomeName.groovy\");
Object aScript = clazz.newInstance();
MyInterface myObject = (MyInterface) aScript;
myObject.interfaceMethod();
...
This works fine if the Groovy class implements the inferface MyInterface. myObject can from then on be used as every other Java object implementing MyInterface.

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