java - How to remove an element in an array of strings -

im new @ coding. have array of movies. im trying delete movie least number of sales. in method 'remover' located in box office class, error saying " int cannot dereferenced" on line including code "((movies.get(i).sales).equals(small))". called remove method delete array im guessing remove isnt legitimate in java. call have make remove array , update length.

import java.util.*; public class lianglab1p2 {     public static void main(string[] argv)     {         boxoffice bo = new boxoffice();         bo.add(new movie("starboat","pg","action"));         bo.add(new movie("bloody banquet","pg-13","horror"));         bo.add(new movie("godizilla eats tokyo","pg","horror"));         bo.add(new movie("geeks in love","pg","comedy"));         bo.add(new movie("bad cop, worse cop","r","comedy"));         bo.add(new movie("lost of bullets","r","action"));         bo.add(new movie("the eliminator","r","action"));         bo.add(new movie("the garbage collector","pg","comedy"));         bo.add(new movie("the dentist","r","comedy"));         bo.add(new movie("the professor","r","horror"));         bo.add(new movie("bloody noon", "r", "action"));          for(int i=0;i<200;i++) bo.sellticket("the professor");         for(int i=0;i<100;i++) bo.sellticket("starboat");         for(int i=0;i<120;i++) bo.sellticket("the eliminator");         for(int i=0;i<10;i++) bo.sellticket("bloody banquet");         for(int i=0;i<40;i++) bo.sellticket("the dentist");         for(int i=0;i<25;i++) bo.sellticket("geeks in love");         bo.listmovie();         bo.genrecounter();         system.out.println("the popular genre " +bo.genrecounter());         system.out.println("the popular movie " +bo.mostpopular());            system.out.println("the sales have been reset 0");         bo.reset();       } } class movie {     public int sales;     public int genr;     public string title;     public string rating;     public string genre;      public movie (string t, string r, string g){         title = t; rating = r; genre = g; sales = 0; genr = 0;     }     public string tostring(){         return title+ " - rated " +rating+" - genre: "+genre;     } }  class boxoffice{      list<movie> movies = new arraylist<>();      public double ticketprice;     public void changeprice(double newprice){                ticketprice = newprice;     }//changeprice      public boxoffice(){                 // constructor         ticketprice = 10.00;     }//boxoffice      public void add(movie m){           //adds movie         movies.add(m);     }//add      public void listmovie(){            //prints list of movies         (int i=0; i<movies.size(); i++)         {             system.out.println(movies.get(i).tostring());         }     }//listmovie      public int get(string t){           //gets movie title         (int i=0; i<movies.size(); i++)             if (t.equals(movies.get(i).title)){                 return i;             }             return -1;     }//get      public void sellticket(string m){            int = get(m);         if (i>=0)             movies.get(i).sales +=1;         else             system.out.println("that movie not showing");     }//sellticket      public string mostpopular() {   //returns name of popular movies         string ax = "";         int bx = -1;         (int i=0;i<movies.size();i++)             if (movies.get(i).sales>bx)             {                 ax = movies.get(i).title;                 bx = movies.get(i).sales;             }         return ax;     }//mostpopuler      public void reset(){         (int i=0;i<movies.size();i++){             movies.get(i).sales = 0;         }     }      public void remover(){         int small = movies.get(0).sales;         (int i=0;i<movies.size();i++){             if (movies.get(i).sales < small)                 small = movies.get(i).sales;             }         (int i=0;i<movies.size();i++){             if ((movies.get(i).sales).equals(small))                 remove(movies.get(i));         }     }      public string genrecounter(){   //returns populer genre         int horror = 0;         int action = 0;         int comedy = 0;         (int i=0;i<movies.size();i++)             if ((movies.get(i).genre).equals("horror")){                 horror++;             }             else if((movies.get(i).genre).equals("comedy")){                 comedy++;             }             else {                 action++;             }         if (horror > action || horror > comedy){             return "horror";         }         else if (action > comedy || action > horror){             return "action";         }         else {             return "comedy";         }     }   }//boxoffice 

if movies.get(i).sales returns int, can't call .equals (or instance method) on it, since int primitive type. use movies.get(i).sales == small instead.

as removing item arraylist, can movies.remove(i), note side effect, change index of elements in list index > i, if continue iterating on list after removal, should process i'th element again.

therefore, should change loop inside remover :

    (int i=0;i<movies.size();i++){         if (movies.get(i).sales==small) {             movies.remove(i);             i--;         }     }