Search DaniWeb - file-io

File IO and linked lists 15 Years Ago by xxunknown321 …read in files from a ".txt" file into a linked list heres my code. [CODE]… import java.io.*; public class LinkedList1 { class Node { String element;…INTEGERS FROM A ".txt" FILE // USING FILE IO HOW DO I DO THAT? } } [/CODE] Binary file io, can't delete or modify records. 14 Years Ago by cousinoer5 … simple (mostly review stuff), but now we got to binary file io and it's kicking my butt. This program is supposed… to read from a file called "Hardware.dat" (or create it if it…("hardware.dat", ios::out); cout << "file has been created, run the program again to start inputting… using in out for file io assembly 14 Years Ago by maf5693 hi I have been looking around for a good file io tutorial and I cant find any. It is simple enough to me the process, mov dx,043h mov al,54 out dx,al etc. but i have no idea which ports go to where or how to write to a hard disk or floppy drive etc. how do i find out which ports map to where? Re: File IO and linked lists 15 Years Ago by BestJewSinceJC Use a Scanner. Really, the exact way to do it depends on how your text file is set up, but [URL="http://java.sun.com/docs/books/tutorial/essential/io/scanning.html"]here[/URL] is a general tutorial on Scanner. Re: File IO 16 Years Ago by Ezzaral In that case, all you need to do is use [URL="http://java.sun.com/javase/6/docs/api/java/io/BufferedReader.html#readLine()"]BufferedReader.readLine()[/URL] to get the line(row) and [URL="http://java.sun.com/javase/6/docs/api/java/lang/String.html#toCharArray()"]String.toCharArray()[/URL] to split the characters. Re: File IO 16 Years Ago by ~s.o.s~ … [ICODE]String.valueOf()[/ICODE] and write it out to a file using [ICODE]PrintWriter[/ICODE]. When reading in data, just read… any application without having a proprietary format for your text file. file io 19 Years Ago by Acidburn … from my resoruces if you want to append a txt file thats whats the syntax is......can anyone offer a hand… File IO 16 Years Ago by jbennet … thinking use a loop to save each element to a file. But how to get it to load. How do i… Re: File IO 16 Years Ago by Ezzaral … vary, you may need to write the offsets into the file as well (i.e. on the first line) File IO 14 Years Ago by berwick53 I have a CSV file with the following data 15278349,567892,3456,9742.30,CASH-WITHDRAWAL-200.00,DIRECT-DEBIT-200.00 64328975,632489,7562,98734.65,CHEQUE-DEPOSIT-100.00,CASH-DEPOSIT-424.54 etc... How would I print to screen the individual lines instead of just the top line?? Sam Re: File IO 14 Years Ago by Narue ….h> #include <stdlib.h> int main(void) { FILE *in = fopen("data.txt", "r"); char… file input problems (with windows?) 18 Years Ago by Zatnik …The section of code that deals with file io is here: [code=java] public ClassRecord… cid[]; public ClassRecord(String filename) //load from file { FileInputStream fis; InputStreamReader isr; int data; String…} public void save(String filename) //write to file { FileOutputStream fos; PrintWriter pw; try { System… File Folder Traversing and Size Calc 11 Years Ago by sobias … calculated the size of each folder and file. Finding the file size is easy using File.io `getSize()`. However, to find the size of…in my traverse method? Traverse Class: import java.io.File; public class Traverser { private File fileObject; public Folder originalFolder; //Selected Folder public Folder… io.FileNotFoundException on unix 13 Years Ago by carloskire …/disk/ip/ipgal My code: [CODE=java] try { File file = new File("/disk/ip/ipgal/projects"); FileReader input = new …stack trace JOptionPane.showMessageDialog(null, "Unable to open Project file. (IO)", "Error: Contact Programmer.", WIDTH); e.printStackTrace… Re: io.FileNotFoundException on unix 13 Years Ago by carloskire …(see line 2): [CODE=java] // READ PROJECTS FILE ETC. File file = new File("/disk/ip/ipgal/projects"); FileReader input = new…stack trace JOptionPane.showMessageDialog(null, "Unable to open Project file. (IO)", "Error: Contact Programmer.", WIDTH); e.… File issues in C++ 16 Years Ago by himsymcpp hi friends, I am working with file IO in C++, but there are some serious issues i am … dont exists. 2) Then I read one file entirely i.e each record within the file, there are 30000 such records - 1… File I/o the complex stuff. 13 Years Ago by Zssffssz … spaces! Please help! I want to do this in C++ file io not C (C's way is kind of ugly) Re: FIle IO - Storing data into an Array help. 13 Years Ago by codeorder …if this helps. [CODE]Imports System.IO Public Class Form1 Private myFile As String…End Sub Private Sub myCoolSub() If File.Exists(myFile) Then arFileLines = File.ReadAllLines(myFile) For i As Integer….Length - 1 Step +2 '// loop thru file.lines and skip reading every other line. MsgBox(… File IO and pictures 16 Years Ago by Fuse … use? # looadArea = what is the url or file to load? FRAME_WIDTH = 500 FRAME_HEIGHT = 600 class…area. Alternatively, press load and select a file instead.') self.outputArea.SetValue('The data will …expression here.") self.loadArea.SetValue("Enter file location here.") self.horBoxOne = wx.BoxSizer()… Re: File IO and pictures 16 Years Ago by woooee You want to search for wxpyton file dialog [url]http://www.wxpython.org/docs/api/wx.FileDialog-class.html[/url] File IO outside of JAR 14 Years Ago by redZERO …I would like to deploy it as a JAR file, so i have "build"'ed it … requires reading from and writing to, the same file. Now I have read somewhere that it is …write to files [I]within[/I] a jar file, so I want to access a resource outside of… the jar file. The thing is, I have searched and searched… Re: file IO and fuctions 17 Years Ago by vijayan121 [CODE]// istream file, string str1, str2, str3 // read to the first colon assert( geline( file, str1, ':' ) ) ; // get first letter after the first colon assert( geline( file, str2, ':' ) && !str2.empty() ) ; char c = str2[0] ; // read all the letters after the second colon assert( geline( file, str3 ) ) ;[/CODE] Re: file IO and fuctions 17 Years Ago by Duoas … entire_line; string part; // <open file here> // for each entire line from the file while (getline( file, entire_line )) { // get yerself -another- stream… new one is created for // the next line of the file on the next iteration of the loop) } [/code] If you… Re: file IO and fuctions 17 Years Ago by vijayan121 …[code]// get first letter after the first colon assert( geline( file, str2, ':' ) && !str2.empty() ) ;[/code… get first letter after the first colon bool is_ok = geline( file, str2, ':' ) && !str2.empty() ; assert…programmers do not habitually use them. [inlinecode]geline( file, str2, ':' );[/inlinecode] read chars one by one… Re: File IO outside of JAR 14 Years Ago by NormR1 … can write a program to read and write to a file using files vs resources, that class will work the same…]I want to access a resource outside of the jar file[/QUOTE] Can you change the code to use files vs… Re: File IO outside of JAR 14 Years Ago by redZERO I'm using NetBeans, as far as I know it doesn't allow for relative paths. I decide where I want them to be. For example, all I want to do is put the text file in the /dist folder with the JAR and then put that folder anywhere and it will run and be able to find the file. Re: File IO outside of JAR 14 Years Ago by NormR1 Strange behavior for your IDE. You mean you can't code: String path = "aFolder/Afile.txt"; // relative path to the file File aFile = new File(path); Re: File IO outside of JAR 14 Years Ago by Ezzaral Where are you putting the jar? It should treat the jar file location as the root and paths relative to that location should resolve just fine. file IO and fuctions 17 Years Ago by johnpmii Hello, I'm tring to read a text file and pull pieces of the line into separate functions. I …can open and close the file in the main. When I use the getline() it reads… Re: file IO and fuctions 17 Years Ago by WaltP [QUOTE=johnpmii;476996]Hello, I'm tring to read a text file and pull pieces of the line into separate functions. I can open and close the file in the main. When I use the getline() it reads the whole line, I only want to read up to a certain point using strings instead of c-strings. [/QUOTE] Why? And how far?