Thread: A little help

So I have an infinite loop on my hands, and I was wondering if anyone can help me out. My purpose is to make an iterative cube root function using newtons method. Any help would be greatly appreciated.

I set a = 1.0 just to test. I need to go through numbers 1 -50 but thats really irrelavant.

    public static void cRoot ()
    {
       ///newtons method for compution.
      boolean closeEnough = false;
      double X, XX;
      double a = 1.0;
       /// set the cubeRoot for 0 and 1.
       if (a == 0.0)
           X = 0.0;
        if (a == 1.0)
           X = 1.0;
 
       X = a/2.0;  // first guess.
       while( closeEnough == false )
       {
            // Next guess
            XX = (1/3.0 *( 2.0 * Math.pow(X, 3) + a) / (Math.pow(X, 2)));
            // Is it close enough?
            if ( (XX - X)/X < 0.00001)
             // New guestimate.
            X = XX;
       }
       /// Output of the cuberoot.
       System.out.print(X);
    }
 
}

Thank you seems to have opened some doors. Thanks.