Reading from file?

[6thDAY]

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

Here is part of my txt file:

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

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:

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

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

Can someone help?

THANKS!

[JosAH]

AEM, Intake, 242.95

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

[6thDAY]

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

thanks

[mi14chal]

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" */

[6thDAY]

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:

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:

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!

[pbrockway2]

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.

-------------------------------

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.