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Home/ Questions/Q 7041821
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Editorial Team
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Editorial Team
Asked: May 28, 20262026-05-28T02:05:35+00:00 2026-05-28T02:05:35+00:00

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

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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.

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  1. Editorial Team
    Editorial Team
    2026-05-28T02:05:36+00:00Added an answer on May 28, 2026 at 2:05 am

    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);
    }
    
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