Java Fix Servlet

I have 3 java fiels
java servlet , java bean , java model
the java servlet should return the result of model which json response
the java servlet has java model adapted inside it , but when we hit the servlet it showing nothing
so it need to be fixed to map the values and show it

the servlet should present the json values of model result

who can check the files and fix please ping me

the fields is very simple need small fix


thank you