CODEWITHSUNDEEP
java
askquestion
askquestion

Reputation: 25

ArrayList<Number> is not applicable for the arguments (int)

This is my code which is shown as follows:

import java.util.*;
import java.math.*;
public class Exercise {

    public static void main(String[] args){
        ArrayList<Number> list = new ArrayList<>();

         list.add(59);    
        list.add(47);
        list.add(32);
        list.add(43);
        list.add(95);
        list.add(36);
  }

    public static void sort(ArrayList<Number> list){
        int iteration = list.size();

        while (iteration >= 0){
            for (int i = 0; i < list.size() - 1; i++){
                for (int k = 1; k < list.size(); k++){

                    if (list.get(i).getValue() > list.get(k).getValue()){
                        Number temp = list.get(k);
                        list.set(k, list.get(i));
                        list.set(i, temp);
                    }
                }
            }

        iteration --;
    }
 }

}
class Number{
    double d;
    Number(double d){
        this.d = d;
    }

    double getValue(){
        return d;
    }
}

The error message is:

The method add(int, Number) in the type ArrayList is not applicable for the arguments (int)

The error corresponds from this part:

 list.add(59);    
        list.add(47);
        list.add(32);
        list.add(43);
        list.add(95);
        list.add(36);

Can anyone give me a help for fixing the error? Thank you!

Upvotes: 2

Views: 4156

Answers (3)

Amir
Amir

Reputation: 80

You are not adding Number class actually, instead you are trying to add Integer.

Try this

    list.add(new Number(59));    
    list.add(new Number(47));
    list.add(new Number(32));
    list.add(new Number(43));
    list.add(new Number(95));
    list.add(new Number(36));

Upvotes: 0

derHugo
derHugo

Reputation: 90724

  1. In your ArrayList<Number> you have to add instances of Number not int.

  2. Since your Number constructor expects double not int you have to fill it like:

    list.add(new Number(59.0));

Upvotes: 0

user6761124
user6761124

Reputation: 137

The arraylist you are using is holding Number types. You need to store number objects in your list instead of integers.

Example :

ArrayList<Number> list = new ArrayList<>();
Number num = new Number(12.0);
list.add(num);

Upvotes: 1

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