Groovy动态语言 运行在JVM中的动态语言 可以方便的处理业务逻辑变化大的业务

				/**
				 * @author Chris Poirier
				 * @version $Revision: 1924 $
				 */
				class MethodDispatchBug extends GroovyTestCase {
				    void doit(Object parameter1, Object parameter2) {
				        System.out.println("TestChild::doit( Object, Object )");
				    }
				
				    void doit(Boolean parameter1, Object parameter2) {
				        System.out.println("TestChild::doit( Boolean, Object )");
				    }
				
				    void doit(Object parameter1, Boolean parameter2) {
				        System.out.println("TestChild::doit( Object, Boolean )");
				    }
				
				    void doit(Boolean parameter1, Boolean parameter2) {
				        System.out.println("TestChild::doit( Boolean, Boolean )");
				    }
				
				    void testBug() {
				    /* @todo
				    	strange - this works fine inside eclipse but fails inside Maven
				    	
				        o = this;
				
				        System.out.println("Calling Test.doit( Boolean, Boolean ) -- expect Boolean, Boolean");
				        o.doit(true, true);
				
				        System.out.println("");
				        System.out.println("Calling Test.doit( Boolean, Integer ) -- expect Boolean, Object");
				        o.doit(true, 9);
				
				        System.out.println("");
				        System.out.println("Calling Test.doit( Integer, Boolean ) -- expect Object, Boolean");
				        o.doit(9, true);
				
				        System.out.println("");
				        System.out.println("Calling Test.doit( Integer, Integer ) -- expect Object, Object");
				        o.doit(9, 9);
				    */
				    }
				}