android - Parsing JSON Object inside Array in Jackson -

am using jackson json processor details form json, have following

json string

{ "first_name": "first_name", "last_name": "last", "city": "somewhere", "user_user": [    {         "id": "1",         "domain": "http://google.com/"     },     {         "id": "34",         "domain": "http://so.com/"     },     {         "id": "42",         "domain": "http://ww.com/"     } ]} 

userdetails

package com.example.com;  import java.util.list;  public class userdetails{ private string city; private string first_name; private string last_name; private list<?> user_user;  public string getcity(){     return this.city; } public void setcity(string city){     this.city = city; } public string getfirst_name(){     return this.first_name; } public void setfirst_name(string first_name){     this.first_name = first_name; } public string getlast_name(){     return this.last_name; } public void setlast_name(string last_name){     this.last_name = last_name; } public list<?> getuser_user(){     return this.user_user; } public void setuser_user(list<?> user_user){     this.user_user = user_user; } } 

user_user

package com.example.com;  import java.util.list;  public class user_user{ private string domain; private string id;  public string getdomain(){     return this.domain; } public void setdomain(string domain){     this.domain = domain; } public string getid(){     return this.id; } public void setid(string id){     this.id = id; } } 

code

objectmapper mapper = new objectmapper(); userdetails userdetails = mapper.readvalue(jsonstring , userdetails.class);  system.out.println(userdetails.getfirst_name()); system.out.println(userdetails.getlast_name());  user_user userf =   mapper.readvalue(jsonstring , user_user.class);  for(int = 0; < userdetails.getuser_user().size(); i++) { system.out.println(userf.getid()); } 

1. from above code not able id user_user.

2. how parse , get fav_colors if json had array again.

i changed list<?> user_user; list<user_user> user_user; in userdetails
suggested michał ziober

after able retrieve results easily, here code.
without sysout it's hardly 3 lines.

    system.out.println(userdetails.getcity());      //city, firstname, lastname      for(int = 0; < userdetails.getuser_user().size(); i++) {     system.out.println(userdetails.getuser_user().get(i).getid());      // id, domain     try {         for(int k = 0; k < userdetails.getuser_user().get(i).getfav_colors().size(); k++) {             system.out.println(userdetails.getuser_user().get(i).getfav_colors().get(k));   //fav_color         }     }     catch (exception e) {         system.out.println("no fav colors");         }     } 

for reference have added project in github.