import java.util.Scanner;
import java.io.*;

/** Oct 10 
  * Output Files: 1. import java.io.*
  *        2. put "throws IOException" clause in header of method
  *        3. create an object for writing of type PrintWriter
  *        4. Now you can write using println
  *        5. When you're finished with a file, close the file
  */

public class TableofSquaresFiles {
  /** This class prints a table of the numbers from some number to 1
    * another number, and their squares.
    * 1    1
    * 2    4
    * 3    9
    */
  
 public static void main(String[] args) throws IOException {
   
   Scanner scanner = new Scanner(System.in);
   System.out.println("What's the highest value you want in the table?");
   int limit = scanner.nextInt();
   
   // Step 3: create a PrintWriter object and connect it to a file
   // on disk called table.txt. Note this java program is going to 
   // create this file.
   PrintWriter oFile = new PrintWriter("DataFiles\\table.txt"); 
   
   oFile.println("Table of Squares");
   oFile.println("Number    Number^2");
   for (int i=10; i<=limit; i++) {
   // Step 4: can use println with PrintWriter object
     oFile.println(i + "         " + i*i);
   }
   // Step 5
   oFile.close(); 
 }
}