ForLoop Square Root Calculator Program

Question

* Programmer:      R McBride
* Date:           November 29, 2006
* Filename:     SquareRootForLoop.java
* Purpose:          This program uses for()loops to
*                    find the square root of a number
*                    up to four decimal places long.
import APCS.Keyboard;
class SquareRootForLoopTest1
     public static void main (String[]args)
          //define variables
          double SquareRoot = 0; //holds initial value
          double num1 = 0;
          boolean done = false;
          double tempReg1 = 0; //holds initial value of i
          double tempReg2 = 0; //holds
          double tempReg3 = 0;
          //while loop start
//          while (!done)
          //program input
          System.out.println("\t\t\tSQUARE ROOT CALCULATOR PROGRAM");
          System.out.println(""); //skip line
          System.out.println("Enter the number you would like to be square rooted or [0] to end the program.");
          System.out.print("");
          SquareRoot = Keyboard.readInt();
          System.out.println(""); //skip line
          System.out.println("You entered "+SquareRoot+".");
          System.out.println(""); //skip line
          //for loop function
          for(int i = 0; i < 999999; i++)
          tempReg1 = i * i;
          tempReg2 = i;
//          while (!done)
                    if(tempReg1 == SquareRoot)
                         System.out.println("The square root is "+tempReg2);
                         System.out.println("");
                    else
                         System.out.print("");
          //while loop check to finish
//          if(SquareRoot == 0)
//               done = true;
//          }//end while loop
}Here is my code for and of you who ever wants to use it. Our assignment was to make a square root calculator using ForLoop (a.k.a. no square root functions).
My question is, how would I make it increase by .0001 instead of 1 every loop? I need it to do that so I can find square roots of numbers of numbers that have decimals for squares.

Answer 1

* Programmer:      R McBride
* Date:           November 29, 2006
* Filename:     SquareRootForLoop.java
* Purpose:          This program uses for()loops to
*                    find the square root of a number
*                    up to four decimal places long.
import APCS.Keyboard;
class SquareRootForLoopTest1
     public static void main (String[]args)
          //define variables
          double SquareRoot = 0; //holds initial value
          double num1 = 0;
          boolean done = false;
          double tempReg1 = 0; //holds initial value of i
          double tempReg2 = 0; //holds
          double tempReg3 = 0;
          //while loop start
//          while (!done)
          //program input
          System.out.println("\t\t\tSQUARE ROOT CALCULATOR PROGRAM");
          System.out.println(""); //skip line
          System.out.println("Enter the number you would like to be square rooted or [0] to end the program.");
          System.out.print("");
          SquareRoot = Keyboard.readInt();
          System.out.println(""); //skip line
          System.out.println("You entered "+SquareRoot+".");
          System.out.println(""); //skip line
          //for loop function
          for(double i = 0; i < 999999; i+=.0001)
          tempReg1 = i * i;
          tempReg2 = i;
//          while (!done)
                    if(tempReg1 == SquareRoot)
                         System.out.println("The square root is "+tempReg2);
                         System.out.println("");
                    else
                         System.out.print("");
          //while loop check to finish
//          if(SquareRoot == 0)
//               done = true;
//          }//end while loop
}Still doesn't work. =[