Thread: Illegal Start of Expression Error. Any help is appreciated.

The first issue I can see is that the MAX variable isn't declared or initialized anywhere. I would change your constructor to take an integer and use that to construct the appropriate sized array. Secondly, it's very bad practice to have the loop counter as an object field as you have it there (though, this wouldn't give any compile/running errors). Use a local variable for such a simple task as this. Conversely, you'll probably want the double array to stick around, so I would put that as a field. The last issue is you're trying to use in.nextLine(), but you haven't declared or initialized what in is. I'm guessing you want a Scanner object.

import Java.util.Scanner;
 
public class MyArray
{
     double array[];
 
     MyArray(int max)
     {
          array[] = new double[max];
          Scanner in = new Scanner(System.in);
          for (int i = 0; i < max; i++)
          {
               System.out.println("What number");
               double num = Double.parseDouble(in.nextLine());
               array[i] = num;
          }
     }
}