Help with converting information from file to variable

[illzidaneyou]

I am trying to make it so that i can read a file and make certain lines into variable info
Say for example in the file i was reading, line 1 had the number 100 written on it
how would i make it so that an int variable will be equal to that 100?

I am also having another problem
when i use this code

String text = "Hello\n"
String text2 = "What is your name?"
File file = new File("receipt.txt");
output = new BufferedWriter(new FileWriter(file));
output.write(text);
output.write(text2);
output.close();

it works fine it will print the text variable into a file but when i try to go to next line say by using \n
it will not, instead it will just continue to write in one big line and put a [] box whereever \n was.

Any help is appreciated

[andrew.]

I'm just taking a guess here, but doesn't Windows have different line endings than other OSes? Like it's supposed to be something like "\r\n".

[illzidaneyou]

hmm. Ill try that. yeah im using windows Xp.

[illzidaneyou]

uhh it didnt work. It got rid of the box, but it still not printing onto the next line.

[Euphoracle]

don't use \n, use the os's line terminator (this can be accessed by using writeln instead of write)

[illzidaneyou]

oh so its kinda of like
System.out.println and
System.out.print

K thnx

[illzidaneyou]

it doesnt let me compile
it says somthingis wrong with the writeln command
Error message:

K:\IrfanISUinput.java:20: cannot find symbol
symbol : method writeln(java.lang.String)
location: class java.io.Writer
output.writeln(text);
^
1 error
Finished

[Euphoracle]

oh I saw 'File' and 'Writer' below it and thought you were using a FileWriter. for a BufferedWriter, just do your .write without a \n, then follow it by a newLine()

this:

output.write("fish");
output.newLine();

[illzidaneyou]

when i use that i get this error
K:\IrfanISUinput.java:22: cannot find symbol
symbol : method newLine()
location: class java.io.Writer
output.newLine();
^
1 error
Finished

Just a note - Im using Public class in Jpad Pro 6.5

[Barbarrosa]

You've initialized "output" as a Writer, not a BufferedWriter. The Writer class does not have newLine(), thus denying you access to this useful method. You should either change the type it's initialized with or cast it to a BufferedWriter when calling the method.

Java:

((BufferedWriter)output).newLine();

[Euphoracle]

Or rather than casting it, you can correctly create a BufferedWriter. Sorry you misinterpreted my previous post, it could have been better worded.

[illzidaneyou]

Thanx guys its working now. Unfortunately this only solves my second problem. The first is the one that has me bamboozled. I have no idea.
Basically our teacher doesnt want us writing prices in our program. She wants it to be in a seperate file so that it can be changed by someone who doesnt know java
But i dunno how to take my read info and make a variable = to the read information.

[Euphoracle]

Care to elaborate? What are you using to 'read info'?

[illzidaneyou]

This is my code for reading my file:

FileInputStream Pizzastream = new FileInputStream("PizzaCostInformation.txt");
DataInputStream Bread = new DataInputStream(Pizzastream);
BufferedReader Cheese = new BufferedReader(new InputStreamReader(Bread));

This is the file its reading:

Medium Pizza
9.25
Large Pizza
10.95
Extra-Large Pizza
13.50
Regular Topping
1.50
Gourmet Topping
1.95
Dipping Sauce
0.69

[illzidaneyou]

So like how could I make a variable that is like
double Pizza = Line2 which is 9.25?
Is there a way to do that or am i approaching this the wrong way.
Cuz all my teacher said was that all the prices had to be loaded from a file.