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Thread: Code Complete?

  1. #1
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    Default Code Complete?

    Hello, I am currently doing an assignment where i was given 3 java codes that was similarly to my assignment. I changed those codes to fit my needs and i was wondering if anyone had any better ideas that i can do with my code.
    We had to make a .txt file that bascially defined a game you put in .
    We had to include price, manufacturer, quantity, discount price, discount quantity, then two other programs to read and pull up the .txt file.
    So.... here is my code thus far , I am open to suggestions to include more things in this code to better define the game. Also, I was wondering why the .txt file when i create it it reads a bunch of weird characters for instance " sr EmployeeԽ; D QOHD QOH2I idNumD priceD price2L namet Ljava/lang/String;L name2q ~ L name3q ~ xp@. @. @N @K t Lawlst Lawlst C" this was the file it made when i viewed it from notepad using Lawls as game name and manufacturer just for example. I thought it would just list the names, prices, quantities in the txt file. If someone could explain this to me that would be cool.
    import java.io.*;
    public class Employee implements Serializable
    {
       int idNum;
       String name;
       String name2;
       String name3;
       double price;
       double price2;
       double QOH;
       double QOH2;
       public Employee(int num, String name, String name2, String name3, double price, double price2, double QOH, double QOH2)
       {
          idNum = num;
          this.name = name;
          this.name2 = name2;
          this.name3 = name3;
          this.price = price;
          this.price2 = price2;
          this.QOH = QOH;
          this.QOH2 = QOH2;
       }
       public void display()
       {
    	   System.out.println("serial # " + idNum );
    	   System.out.println(" Game name:" + name);
    	   System.out.println(" Manufacturer/publisher: " + name2);
    	   System.out.println(" Original price: " + price );
    	   System.out.println(" Quantity: " + QOH );
    	   System.out.println(" Discounted price: " + price2);
    	   System.out.println( " Quantity: " + QOH2);
    	   System.out.println(" Game rating: " + name3);
       }
    }
    import java.io.*;
    import java.util.*;
    public class CreateEmployeeObjectFile
    {
       public static void main(String[] args) throws IOException
       {
          ObjectOutputStream output =
             new ObjectOutputStream
             (new FileOutputStream("game.txt"));
          Employee emp;
          int num = 0;
          final int QUIT = 1337;
          String name;
          String name2;
          String name3;
          double price;
          double QOH;
          double price2;
          double QOH2;
          Scanner in = new Scanner(System.in);
          System.out.print("Assign the games serial number: " + QUIT + " to quit ");
          num = in.nextInt();
          while(num != QUIT)
          { 
              System.out.print("Enter the game name: ");   
              name = in.next();
              System.out.print("Enter the game manufacturer/publisher: ");   
              name2 = in.next();
              System.out.print("Please type the rating of the game (C,E,E+,T,M,Ao,RP): ");   
              name3 = in.next();
              System.out.print("Enter the price of the game: ");
              price = in.nextDouble();
              System.out.print("Enter how many are available in stock: ");
              QOH = in.nextDouble();
              System.out.print("Enter the discounted price of the game: ");
              price2 = in.nextDouble();
              System.out.print("Enter how many are available in stock discounted: ");
              QOH2 = in.nextDouble();
             emp = new Employee(num, name, name2, name3, price, price2, QOH, QOH2);
             output.writeObject(emp);
             System.out.print("Assign the game a number: " + QUIT + " to quit ");
             num = in.nextInt();
          }
          output.close();
       }
    }
    import java.io.*;
    public class ReadEmployeeObjectFile 
    {
       public static void main(String[] args)
          throws IOException, ClassNotFoundException
       {
            ObjectInputStream in = new
             ObjectInputStream
             (new FileInputStream("Game.txt"));
          Employee emp;
          try
          {
            while(true)
            {
               emp = (Employee)in.readObject();
               emp.display();
            }
          }
          catch(EOFException e)
          {
            in.close();
          }
       }
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Code Complete?

    why the .txt file when i create it it reads a bunch of weird characters
    The contents of the file is not text. It is what is inside of a class object that was written using the writeObject() method.

    If you want text you can read with notepad, you need to use a class and methods that write text like PrintWriter.
    If you don't understand my answer, don't ignore it, ask a question.

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