Reading from file?

hey guys, Im having trouble reading different data from one line

Here is part of my txt file:

Code:

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AEM, Intake, 242.95
AGP, Intercooler, 214.95
Apex, Turbo, 5495.00
Apexi, Intake, 154.95
Apexi, Exhaust, 769.95
Apex, Suspension, 1147.95

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I would like to read the first column individually, then the second data, and the third data (price), not the whole line

I know how to read the first data, ie AEM, and using the whitespace, I can read Intake also, but it also reads the "price" included, so I dont know how to break it into 3 parts.

I tried to add commas, and specific the indexes, but it doesnt work when I tried to read the price.

I also tried using this:

Code:

---

readStream = new Scanner(new FileInputStream("mods.txt")).useDelimiter("," , ",");

---

But because Im a noob, I'm not using it correctly:p

Can someone help?

THANKS!

Quote:

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Originally Posted by 6thDAY

AEM, Intake, 242.95

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Why don't you read entire lines and String.split( ... ) them on the comma?
You'll end up with an array of Strings, i.e. array[0]= "AEM"; array[1]= "Intake" and array[2]= "242.95" for the first line.

kind regards,

Jos

can u give me an example of what you mean by that?

thanks

Code:

---

FileReader inputFile= new FileReader ("xxx.txt");
BufferedReader inputBuffer = new BufferedReader(inputFile);
String Line = inputBuffer.readLine();
String[] record1 = Line.split(", "); /* You will have record1[0] = "AEM", record1[1] = "Intake", record1[2] = "242.95" */

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Thanks mi14chal!

I wanted to ask u though, instead of storing them in an array, I would like to store each of them individually in a different variable based on if the user wants to search by brand name, model, or price

Here is my code:

Code:

---

public void searchBrand()
        {
                Scanner readStreamBrand = null;
                String readBrand = null;
                String storeBrand = null;
                try
                {
                        readStreamBrand = new Scanner(new FileInputStream("mods.txt"));
                       
                        System.out.print("Enter the manufacturer: ");
                        brandName = keyboard.nextLine();
                        while (readStreamBrand.hasNextLine())
                        {
                                readBrand = readStreamBrand.nextLine();
                                storeBrand = readBrand.substring(0, readBrand.indexOf(","));
                               
                                if (storeBrand.equalsIgnoreCase(brandName))
                                {
                                        break;
                                }
                                else
                                {
                                        storeBrand = null;
                                }
                        }
                        if (storeBrand == null) //brand name could not be found in database
                        {
                                System.out.println("TunerShop does not hold the manufacturer you are looking for.");
                                System.out.println("Contact them directly for more information!");
                        }
                        else
                        {
                                searchPart();
                        }
                       
                }
                catch (FileNotFoundException e)
                {
                        System.out.println("********************************");
                        System.out.println("* The file could not be found! *");
                        System.out.println("********************************");
                        System.exit(0);
                }
                readStreamBrand.close();
        }
       
        public void searchPart()
        {
               
        }
       
        public void searchPrice()
        {
               
        }

---

As you can see I have the searchBrand(), searchPart(), and searchPrice().

In the code:

Code:

---

storeBrand = readBrand.substring(0, readBrand.indexOf(","));

---

I was able to read the brand name using the substring.

But how would I go about doing that in my searchPart() method to store the model since the model is in the middle of 2 commas?

Same question with the price?

Can you show me by example? I learn best by it. Thanks!

Split the lines you read on comma-space as has been suggested. Then you can obtain the appropriate target string (brand, model or price) from the array that split() returns.

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You may find it useful to parse the price string as a double: ie use parseDouble() on the price string. That way you can offer useful searches such as finding products whose price lies between two values.