Moля за съдействие иска два пъти натискане на enter и този изход:

No more free space! You need 2 Cubic meters more.Exception in thread "main" java.lang.NumberFormatException: For input string: ""
    at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:68)
    at java.base/java.lang.Integer.parseInt(Integer.java:662)
    at java.base/java.lang.Integer.parseInt(Integer.java:770)
    at Moving.main(Moving.java:18)

Process finished with exit code 1





import java.util.Scanner;

public class Moving {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int widthFreeSpace=Integer.parseInt(scanner.nextLine());
        int lengthFreeSpace=Integer.parseInt(scanner.nextLine());
        int heightFreeSpace=Integer.parseInt(scanner.nextLine());

        int totalFreeSpace=widthFreeSpace*lengthFreeSpace*heightFreeSpace;

        int sum=0;

        String input=scanner.nextLine();

        while ((!input.equals("Done"))){
            int currentBox=Integer.parseInt(input);
            sum+=currentBox;
            input=scanner.nextLine();
            if(totalFreeSpace<sum) {
                int result=Math.abs(totalFreeSpace-sum);
                System.out.printf("No more free space! You need %d Cubic meters more.",result);
            }

        }

        int resultHaveSpace=Math.abs(sum-totalFreeSpace);
        System.out.printf("%d Cubic meters left.",resultHaveSpace);


    }
}