Java-map and Object Changer

/*** Use org.apache.commons.beanutils for conversion*/  classA { Public StaticObject Maptoobject (map<string, object> Map, class<?> beanclass)throwsException {if(Map = =NULL)              return NULL; Object obj=beanclass.newinstance ();            Org.apache.commons.beanutils.BeanUtils.populate (obj, map); returnobj; }               Public Staticmap<?,? >objecttomap (Object obj) {if(obj = =NULL)              return NULL; return Neworg.apache.commons.beanutils.BeanMap (obj); }          }    /*** Use Introspector for conversion*/  classB { Public StaticObject Maptoobject (map<string, object> Map, class<?> beanclass)throwsException {if(Map = =NULL)               return NULL; Object obj=beanclass.newinstance (); BeanInfo BeanInfo=Introspector.getbeaninfo (Obj.getclass ()); Propertydescriptor[] PropertyDescriptors=beaninfo.getpropertydescriptors ();  for(PropertyDescriptor property:propertydescriptors) {Method setter=Property.getwritemethod (); if(Setter! =NULL) {Setter.invoke (obj, Map.get (Property.getname ())); }          }            returnobj; }               Public StaticMap<string, object> objecttomap (Object obj)throwsException {if(obj = =NULL)              return NULL; Map<string, object> map =NewHashmap<string, object>(); BeanInfo BeanInfo=Introspector.getbeaninfo (Obj.getclass ()); Propertydescriptor[] PropertyDescriptors=beaninfo.getpropertydescriptors ();  for(PropertyDescriptor property:propertydescriptors) {String key=Property.getname (); if(Key.comparetoignorecase ("class") = = 0) {                   Continue; } Method Getter=Property.getreadmethod (); Object value= getter!=NULL? Getter.invoke (obj):NULL;          Map.put (key, value); }              returnmap; }          }    /*** Use reflect for conversion*/  classC { Public StaticObject Maptoobject (map<string, object> Map, class<?> beanclass)throwsException {if(Map = =NULL)              return NULL; Object obj=beanclass.newinstance (); Field[] Fields=Obj.getclass (). Getdeclaredfields ();  for(Field field:fields) {intMoD =field.getmodifiers (); if(modifier.isstatic (mod) | |modifier.isfinal (MoD)) {                    Continue; } field.setaccessible (true);           Field.set (obj, Map.get (Field.getname ())); }             returnobj; }           Public StaticMap<string, object> objecttomap (Object obj)throwsException {if(obj = =NULL){                return NULL; } Map<string, object> map =NewHashmap<string, object>(); Field[] Declaredfields=Obj.getclass (). Getdeclaredfields ();  for(Field field:declaredfields) {field.setaccessible (true);          Map.put (Field.getname (), Field.get (obj)); }              returnmap; }   } 

Java-map and Object Changer