Convert array of strings to array of double in java

Question

import java.util.Scanner;

import java.lang.String;

public class SA3

{

    public static void main(String[] args)
    {


        Scanner scan = new Scanner(System.in);

        System.out.print("Enter student record : ");

        String scores = scan.nextLine();

        String[] StringOfMarks = scores.split(",");
        double[] Marks = new double[StringOfMarks.length];


         for(double i = 0; i < StringOfMarks.length; i++)
         {
             Marks[i] = StringOfMarks[i];
         }
      }

}

Answer 1

This converts a single array element, not a whole array.

Also, what is the type of Marks? If it's not double[] you're likely to see that "loss of precision" warning.

Answer 2

This should not affect the precision of your doubles as long as it fits the Java double type. You should also bear in mind, that not every value of double can be represented.

Answer 3

Change the last part of your code into

for(int i = 0; i < StringOfMarks.length; i++)
{
    Marks[i] = Double.parseDouble(StringOfMarks[i]);
}

You need to use an int typed variable for array element access and need to cast the String explicitly into double.