1. Define the Java interface to include a Groovy method that needs to be called in Java
Public interface ifoo {
Public Object Run (Object foo);
}
2. Create a Groovy class to implement the interface
Class foo imports ifoo {
Public Object Run (Object foo) {
Println 'Hello World!'
X = 123
FOO * 10
}
}
3, dynamically load the Groovy class, create an interface instance, call the method defined in the interface
Import groovy.lang.groovyclassloader;
Import java.io.file;
Public class invokegroovy {
Public static void main (String [] args) {
ClassLoader Cl = New InvokeGroovy (). GetClass (). GetClassLoader ();
GroovyclassLoader Groovycl = New GroovyclassLoader (CL);
Try {
Class Groovyclass = Groovycl.Parseclass (New File ("src / foo.groovy));
Ifoo foo = (ifoo) groovyclass.newinstance ();
System.out.println (foo.run (new integer (2)));
} catch (exception e) {
E.PrintStackTrace ();
}
}
}
