Incompatible types: int cannot be converted to integer

Question

The int should autobox but I do not know why it is not. When i try to compile, it gives me an incompatible types error. Is there something wrong with my code?

Scanner console = new Scanner(System.in);
    ArrayList<Integer> list = new ArrayList<>();
    int first = console.nextInt();
    while (first!=0) {
        first=console.nextInt();
        list.add(first);
    }
    System.out.println("Your first list: " + list);
}

What is your version set to, need at least 1.5 for autoboxing? — basic, Jan 15 '19 at 22:00
variable name `first` is pretty unclear and it also should be `String.valueOf(list.get(0))`... besides; calling `first=console.nextInt();` _twice_ will skip half of the values. — Martin Zeitler, Jan 15 '19 at 22:07

score -1 · Answer 1 · answered Jan 15 '19 at 22:18

-1

You probably imported the library incorrectly. You should have something like that:

import java.util.ArrayList;
import java.util.Scanner;

answered Jan 15 '19 at 22:18

MaCloudR

11
2

Reza · Answer 2 · 2019-01-15T22:35:00.370

try to used Java later than 5 or latest version of Java(Currently it is JDK11).
Make sure that your input is always integer.Otherwise you will face to "InputMismatchException".
- Your code expected to get an integer, so if you give some string , your code will not work any more

make sure that , you have imported from right library.

import java.util.ArrayList;
import java.util.Scanner;

make sure your language setting level is 5.0 or higher. you should check the setting in your IDE setting.

Incompatible types: int cannot be converted to integer

2 Answers2