PrintWriter printing newline...

again. I have a program (pretty simple) I'm working on. When I open up the file that PrintWriter creates, the String is all on the same line:"This is a default message. Pay no heed."Rather than:"This is a default message.Pay no heed."Does anyone know how I could get PrintWriter t ...

Help creating a .txt file using an applet

I am a high school senior with a little over 1 year experience with Java. I am trying to create and write to a .txt file within an applet. However, when my program is run, I get "java.security.AccessControlException: access denied (java.io.FilePermission Quiz.txt write)". I am trying to wr ...

Creating .txt files based off of input (beginner java)

I am trying to create a program for my class that takes your input and designs a spiral and outputs the x and y coordinates to a .txt file and a graph. I'm focusing on the .txt file right now and I'm having a lot of difficulty figuring out how to get it to work. I'm very new at this and chances are ...

Java - Writing to File Help Needed!

I am working on a project and need it to write certain data (user input from a form) into a file. I created the following write class but it only creates the txt file and doesnt write. private void requestJButtonActionPerformed (ActionEvent event) { Writer fw = null; try { final FileWriter outputFil ...

ACMICPC Contest Scoring

import java.io.*;public class ACMICPCContestScoring{public static void main(String[] args) throws IOException{BufferedReader dataIn = new BufferedReader(new InputStreamReader(System.in));BufferedReader br = new BufferedReader(new FileReader (" "));String s = br.readLine();String[] array1 = ...

Renaming and deleting text files

I have made this delete class of my address book program.It gives an error when I use the renameTo() function.Please look into my program.import java.io.*;import java.util.*;class del{private String stru,strf;BufferedReader br=new BufferedReader(new InputStreamReader(System.in));public void calc()th ...

Try Catch repeat error

I want it to skip any lines read that throw an exception so I store the lines with errors in an ArrayList. But when it goes through when it gets an error, it will not skip the line and give same error and keep repeating./*** *//*** @author Matt**/import java.io.*;import java.util.*;public class Rece ...

NullPointerException : null (in sun.misc.Floating Decimal) Error?

I am getting further with my Property to let program, but i need help working out the above error, it happens when the user selects the option to delete a property from the text file. The user is supposed to be able to enter in a number and that deletes the line that that number corresponds to. if(i ...

One Final Problem!

i'm still working on the property to let program. and it sort of works... its just when the user selects to delete a line from it it will delete it fine, but it will then duplicate all the items that where previously in it...EG: My File looks like this to start with...1. pe158ul,1,5662. ln11ur,4,755 ...

reading multiple text files

how should i move the data of the multiple text file to another text file...(for instance you have two text filesreadFile1.txt and readFile2.txtand you have to move the data of the two text filesin another file which is writeFile.txt )how should i read the two text files at the same time and write i ...

File writer inside MouseListner

I am trying to write a file writer inside my mouse event code. I am trying to use the file name that comes from JTextField and write it into a file.Here is my code:- private void jButton2MouseClicked(java.awt.event.MouseEvent evt) { JFileChooser chooser = new JFileChooser();chooser.setFileSelectionM ...

Whats going on and how can i fix it?

I have tried many things obviously not everything or it would work, but i need your help. i have run out of ideas on how to fix this. im programming a fishing database where users enter the data and over time it collects and shows them were the type of fish are at certain locations at certain months ...

Homework Java

My Printwriter method is not writing to a text file. the code runs fine it displays the text on screen but nothing appears in the text file. public void run() throws IOException{Scanner sc = new Scanner(System.in);boolean cont = true;while (cont){System.out.println("Enter your line text"); ...

call stack and exception handling

hi, looking at this example code:public void writeList() {PrintWriter out = null;try {System.out.println("Entering try statement");out = new PrintWriter(new FileWriter("OutFile.txt"));for (int i = 0; i < SIZE; i++)out.println("Value at: " + i + " = " + vect ...

3 days to go , big problem with java

i've just 3 days to give the full program to the doctor but i've a problem and i'm tired to find this problem could anyone help me to fix it please this program is currency converter the code is here:import java.awt.*;import javax.swing.*;import java.awt.event.*;import javax.swing.event.*;import jav ...

Prompting & exception

I am not sure what is wrong with my While Loop because if select ("Press 0 to edit info."), I will not get prompt for "Name" anymore.Another thing is my exception does not work. I wanted to deny user from entering alphanumeric under "Mobile". Only numeric allowed here.P ...

Output Help???

Hello. I am having a problem right now with the output part of my code. The program runs and lets me do all my calculations, but when I press the calculate button, the program won't create the output file and the Dos window put up this message:Z:\CIS480\Java\proj>appletviewer Baseball.htmlWarning ...

Counting Words

I am currently working on a little program to count words in a text file. I started it out and I am having a little trouble. This is the code I have so farimport java.io.*;public class FileCount{//----------------------------------------------------------------------//// Method. main(String[] args) ...

Problem - combine two java codes?? Help

Hi, the first java program writes out telephonenumbers, givennames and surnames, the second program writes out only the extensionof a number if the number is written in a canonic format. I try to import the functions of the second programm in the first program, so that I can write out surnames, give ...

Wrong filepath with Forte

I'm just wondering...If I use Forte for Java CE and create a file with:PrintWriter m_fileOut = new PrintWriter(new FileWriter("textfil.txt"));Then the file is created in the C:\J2SDK_Forte\forte4j\bin directory, not in my working directory.If I use some other IDE (or DOS) the file is creat ...

sequential file

Is the following information correct?If I want to write text data to a sequential file then I use the class PrintWriterthe code:PrintWriter writer = new PrintWriter(new FileWriter("Suppliers.txt");writer.System.out.println(line);writer.close(); ...

Ubuntu Write to a file on Tomcat server from servlet

I'm running tomcat. I am trying to write to a txt-file on the server from a servlet, but the txt-file allways end up getting stored in my home-folder.try {out = new PrintWriter(new FileWriter("test.txt"));out.print("This is a text");out.flush();out.close();} catch (IOException e) ...

How to save txt file without overwrite in JAVA

try{FileWriter write = new FileWriter("CropSystemDatabase.txt");PrintWriter text = new PrintWriter(write);text.println("TYPE OF CROPS = " + crop.getTypeCrop());text.println("SEASONS = " + crop.getSeason());text.println("NUMBER OF ACRES = " + crop.getNumberAcre ...

saving results to a txt file.

guys, i need a lil guidance herei am trying to save the output from my "SThreads" results to a txt file without deleting thepreviously stored data, i jst want to keep adding to the file..any suggestions that will help are appreciated..heres the code i have done so far, -------------------- ...

Help Needed: ( get TextField source and Write in a txt file by the button click

I am a newbie Java Learner.I try to learn over Java API Docs.But still I need some help.I have a gui which consist of four textfields(tf1,tf2,tf3,tf4) and a button(b1).If I press the button(b1)"Register", I want my action write whole textfield sources into a text.txt file by using buffer w ...

Help! Printwriter/Fwriter

My ultimate goal is to ping user for insurance company name, the quotes they received for each area, and then give them a total. I need to open a file, write to the file and then close the file, at the end I need to display all inputs. I can't seem to get past the creating of the file! import java.i ...

adding line to txt file and then rename

there. I am trying to create a class that will add a line to a txt file and then if the nuber of lines are greater than 5 it will rename the file.I think I have solved it with this class.My problem is that the file2.renameTo does not work does anyone have any suggestions why?public void CopyLines(St ...

Setting an array and reading in a txt file backwards

I have been having difficulty trying to figure out how to read in data backwards. I get the idea, but have no idea how to properly code it since it is string data from a txt file. I was given the basic file to start with, but need to add in an array that will not assume more than 100 records. void m ...

modify txt file

all, i need help in extracting data out of a txt file and then modify it.this is the problemi have a txt file (customer.txt) storing some dataaccount no. money123 3000293 2300874 3400and this is the output i have to showCustomer Purchase:Enter account number of customer: 123Customer 123Balance: $300 ...

how to save a modified txt?

i have done a read() and a write()... after running write() the read() won't read the newly wrote data until i compile again. my guess is that the newly written data doesn't get saved until i compile again.. please if anyone knows how to make it saved so the read() can read everything after the writ ...

Write and save records to txt file.

I suppose to write the records to a text file. However every time i re-log in and add a record.The previous record will be rewrite. >.<''public void addRecords(){getInfo();FileWriter fWriter = null;BufferedWriter writer = null;try {fWriter = new FileWriter("PassengerInfo.txt");writer ...

FileWriter Help needed

I havehad a go at using fileWriter for the first time and my code compiles but does not output the results of my vector to the text file. Can anyone advise why?Thanks in advance for any help.import java.util.Scanner;import java.util.*;import java.io.*;public class QuizScoreA2//section 2{public stati ...

reading an entire .txt file back to screen

I am working on an assignment where I write items to a .txt file (one item per line) using PrintWriter and FileOutputStream. I also need to recall that file back to the screen. I have tried using BufferedReader with the method readLine(), but that will only give me one line of text. This is fine if ...

Writing multiülined txt file

I have a program that reads from a database, and then displays the results in a TextArea. Then when the user hists upload the file will be saved to a .txt file, and then uploaded to the database. But currently I am getting the original which looks like this in the TextArea1, Header,i2, Item 1,n3, It ...

HELP- assignment ...reading/writing to file

Hi, I really need help..I have an assignment in which i have to create a cinema booking system, I have created three classes...and i save film data in one arrayList and booking data in another...these are stored in two seperate .txt files...there are several things that I am stuck on here...but firs ...

How to combine SMTP with your own code?

I have these two codes which both involve sockets. I can't figure out how to combine the smtp code into my first code. If you look at the first code where it prints out "you are at picture A" it is here were i want to be able to send an email. I am quite puzzled as how to combine the two c ...

Dbms_Java Not Working

i am trying to write to a file using dbms_javai am using the codes in the same order as mentioned belowi get all success messages on sqlplus but when i chk the required file is not created-------------------------------------------------------------------------------call dbms_java.grant_policy_permi ...

help on using StringTokenizer to read and compute multiple lines from text

currently my program only reads in the one first name and last name with 5 grades and computes the average from the first line of my input file.eg.Albert Lake 54 23 54 32 12 average test score 35im trying to edit this code so that the file reads in multiple first and last names each having 5 grades ...

How can i call my FileOutput method to output the array ?? really confused...

Hi, I have a fileoutput method which when called, should output the array into a text file. The array is stored in the same public class as the fileoutput method and I am using a constructor for the array, which is in the Cd class. I would like to know how to call this method from within the same cl ...

Having problems saving objects into an array, then accessing the data later for repo

[FONT=Courier New]Hi,I having problems with loading created objects into an array, then being able to access the records later in the program.The following is a listing of my current program. The code I have thus far, reads information from a file, builds the objects (DVD, Ipod, or Walkman, then loa ...

Help needed for saving high scores

guys i'm new to java and this is the first time i'm posting a question on daniweb so please bear with me ...I have made a quiz for a school project and its almost done save a high scoring mechanism.What i want is first ask the user whether he/she would like to save the score and if so i call another ...

Help with Java Errors

package jetman;import java.io.FileWriter;import java.io.IOException;import java.io.PrintWriter;import java.util.*;//import java.util.Arrays.sort();public class scoreList {String filePath = "Score.txt";private ArrayList<Score> scoreArrayList = new ArrayList<Score>();/** Creates ...

Help With Java

I Would like to create a High Score For a Game in jave Called Jetman. i have created a class in java called Score and Score list to display the score but i do not know how to create a highscore using an Array List the Score Class is package jetman;import java.io.Serializable;public class Score imple ...

String Tokenizer

anyone tell me what is wrong with this code??import java.io.*;import java.util.*;public class Document {public static InputStreamReader input = new InputStreamReader(System.in);public static BufferedReader keyboardInput = new BufferedReader(input);public static void main(String[] args) throws IOExce ...

search methord

i m trying to do a music cd databse. i done most of it bt i dont kno how to do the search methord..can any 1 helpthis is my programimport javax.swing.*;import java.util.ArrayList;import java.io.*;import java.io.IOException;public class Cd{public String ArtistName; public String CdName; public String ...

How to write to more than one file in Java?

This is my first post and I am new to this so bear with me...I am trying to write a program that will output messages to 1 or more text files. For example if I want to write to 3 log files, depending on what is happening in the code. I may want to write to one but not the other. How do I code it for ...

Exception Handling

I have to create a program that reads the text, outputs the text as is and prints the number of lines and the number of times each letter appears in the text. I have to include an exception, so that if the array index goes out of bounds when the program accesses the array letterCount, it throws and ...

Need help in a appending output from a java pgm in an Existing Excel sheet

HiCud anybody help me in sorting out this issue???...i have written a java code which fetches a text fils as an input & displays the output. Now i want to display the output in an existing Excel file in a desired format.import java.io.*;class hi{public static void main(String args[]){try{String ...

Why is & not replaced by & when tidied up using JTidy?

HiI am working on a project that uses JAVA technologies for XML parsing. I have to parse some contents from a site using JDOM/SAX.I am new to all technlogies like XML, JDOM, SAX, JTidy etc. I am familiar with Java. The site which I use as source uses HTML as mark up. So I tidied it using a JTidy pro ...

Help needed to read and write files!

How to make streams to read and write files (in binary) .I have found a few Streams but do not know which one to use.they are as follows:-PrintStream p=new PrintStream(new FileOutputStream("myfile.text"));DataInputStream in=new DataInputStream(new FileInputStream("myfile.txt"));B ...