Question

I am saving in an arraylist in this way (“name”, “surname”, “id”, “email”, “score”)

I trying to edit a user in this arraylist by first searching using id and that part i’m ok with it but then I need to keep the same name,surname and email and just change the score.

Can someone help me, thanks.

Answer 1

first of all create a class User

  class User{
  String name;
  String Email;
  int Score; 
  // bla bla bla
  }

store your users objects in a HashMap

HashMap<int,User> map=new HashMap<int,User>();
User u1=new User();
map.put(1,u1);

and update the object in the map

Integer x=3;
if(map.containsKey(x)){
User u=map.get(x);
u.score=0;
map.put(x,u);
}