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

				package groovy;
				
				/**
				 * Sample class used for testing that groovy can call inner classes contructors.
				 * 
				 * @author Guillaume Laforge
				 * 
				 * @cvs.revision $Revision: 1924 $
				 */
				public class OuterUser
				{
				    private String name;
				    private Integer age;
				
				    public String getName() {
				        return name;
				    }
				
				    public void setName(String name) {
				        this.name = name;
				    }
				
				    public Integer getAge() {
				        return age;
				    }
				
				    public void setAge(Integer age) {
				        this.age = age;
				    }
				
				    public static class InnerAddress
				    {
				        private String city;
				        private Integer zipcode;
				
				        public String getCity() {
				            return city;
				        }
				
				        public void setCity(String city) {
				            this.city = city;
				        }
				
				        public Integer getZipcode() {
				            return zipcode;
				        }
				
				        public void setZipcode(Integer zipcode) {
				            this.zipcode = zipcode;
				        }
				
				        public static class Street
				        {
				            private String name;
				            private int number;
				
				            public String getName() {
				                return name;
				            }
				
				            public void setName(String name) {
				                this.name = name;
				            }
				
				            public int getNumber() {
				                return number;
				            }
				
				            public void setNumber(int number) {
				                this.number = number;
				            }
				        }
				    }
				}