class Example { static void main(String[] args) { Student mst = new Student(); mst.Name = "Joe"; mst.ID = 1; println(mst.Name); println(mst.ID); mst.AddMarks(); } } class Student implements GroovyInterceptable { protected dynamicProps = [:] void setProperty(String pName, val) { dynamicProps[pName] = val } def getProperty(String pName) { dynamicProps[pName] } def invokeMethod(String name, Object args) { return "called invokeMethod $name $args" } }