Assignemnt #120 and Programs That Write to Files

Code

        ///name: Mark Katz
    ///period: 6
    ///program name: Receipt
    ///file name: Receipt.java
    ///date finished: 5/6/16

  import java.io.IOException;
    import java.io.PrintWriter;
    import java.util.Scanner;
    
    public class receipt {
    
        public static void main(String[] args) {
    
            PrintWriter fileOut;
            Scanner kb = new Scanner (System.in);
    
            try{
                fileOut = new PrintWriter("receipt.txt");
    
            } catch(IOException e) {
                System.out.println("Sorry, I can't open the file 'receipt.txt' for editing.");
                System.out.println("Maybe the file exists and is read-only?");
                fileOut = null;
                System.exit(1);
            }
            
            double ppg = 3.5;
            
            System.out.print("How many gallons would you like to purchase? ");
            double g = kb.nextDouble();
            
            double total = g * ppg;        
    
            fileOut.println( "+------------------------+" );
            fileOut.println( "|                        |" );
            fileOut.println( "|     CORNER STORE       |" );
            fileOut.println( "|                        |" );
            fileOut.println( "| 2016-01-25 04:38PM     |" );
            fileOut.println( "|                        |" );
            fileOut.println( "| Gallons: " + g + "        |" );
            fileOut.println( "| Price/gallon: " + ppg + "     |" );
            fileOut.println( "|                        |" );
            fileOut.println( "| Fuel total: " + total + "    |" );
            fileOut.println( "|                        |" );
            fileOut.println( "+------------------------+" );
    
            fileOut.close();
        }
    }