New, Improved Restaurant Program

Your program should look like the following, although in this version a few extra blank lines were added, and a few other cosmetic changes were made.

import java.io.*;
class RestaurantBill
{
  public static void main (String[] args) 
      throws IOException

  {
    String charData;
    double basicCost;

    String tipData;
    double tipRate;

    BufferedReader stdin = 
        new BufferedReader ( 
        new InputStreamReader( System.in ) );

    System.out.println("Enter the basic cost:");
    charData   = stdin.readLine();
    basicCost  = ( Double.valueOf( charData  ) ).doubleValue();

    System.out.println("Enter the tip rate:");
    tipData    = stdin.readLine();
    tipRate    = Double.parseDouble( tipData )  ;

    System.out.println("basic cost: " + basicCost + 
        " total cost: " + 
        (basicCost + basicCost*0.06 + basicCost*tipRate));
  }
}

The println statement was changed to use the variable tipRate. Without this change, the program would run, and would appear to work correctly, but would not calculate the correct result.