Is There A Way To Append Text To A File On A Specific Line Or Location

Jan 21, 2015

I know how to append text to a File using the true argument but I would like to be able to append to a certain line In the file.Basically I've made a simple html page with Image links to different sites. I'm trying to make an app that will take a new site as Input and append It to the html file before the </body> tags.

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Writing Text To File - How To Append New Line

Jan 11, 2015

How to output text to a file, so I had to do my own research on google, but the results I found were confusing. I finally got my code to write to a file, but I cannot figure out how to append a new line. I know what part of the code is incorrect, but I don't know how to fix it. here is what I have right now:

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Scanner;
 public class highscore {
public static void main(String[] args) throws IOException {

[Code] ....

I can see the last two lines are telling the program to overwrite the first input with the second. Of course if I pick a different file name for the second output, I get another file with the second input, but I need to learn how to append as well.

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Removing Specific Line From Text File That Contains Certain String?

Mar 8, 2014

So basically, if a line in a text file contains a certain string, that specific line will be deleted. It should probably be similair to this method?

Java Code:

/**
* Replace text.
* @param replace
* The text to replace.
* @param replaceWith
* The text to replace with.
*/
public static void replaceSelected(String replace, String replaceWith) {
try {
BufferedReader file = new BufferedReader(new FileReader("data/replacer.txt"));

[code]....

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JSP :: How To Append Line In CSV File

Mar 29, 2014

I have a csv file and I want to insert the csv file into the database columns consist of date, description1, description2, amount1, amount2, narration.. but the problem is the narration is coming in second line in csv file due to which the data is not getting inserted into the database. So how to append the narration into the first line,I have enclosed the demo format of csv file and a code to read the csv file..

myFile.csv file:

20-5-2013,"Cash Rec. From abc","pymt",-500.00,,
"Cash rec. from abc office",

20-5-2013,"Cash Rec. From xyz","rcpt",-5100.00,,
"Cash rec. from xyz office",

[Code] .....

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Pickup Selected Text File And Read Line By Line And Output Text Into Visual Text Pane

Dec 12, 2014

I am checking how to do following task.

01. pickup the selected text file and read the line by line and output the text in to visual text pane.

what i did:.

01. I wrote code that read the text file and output in to jave console/ also some of the interface.

the code read txt file:

Java Code:

String fileName = "C:/Users/lakshan/Desktop/lawyer.txt";
File textFile = new File(fileName);
Scanner in = new Scanner (textFile);
while(in.hasNextLine()){

[code]....

so it will read any text file dynamically and output to the text pane in interface. I think scanner code must be execute after the select the file from the browser and set the scanned result in to variable. then later out put the var as string in some jswing component?

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Changing Value In Specific Point Of Specific Line In TXT File

Feb 9, 2015

So here we go with my problem:

- from the main class will arrive three variable (String name_used, int level_choose, int level_result)

I have a .txt file with this kind of formatting:

mario 1 1 0 1 0 1
carlo 0 0 0 1 1 0
...

Where I use 1 and 0 in the main for write if the level (you see that the numbers are always sixr? are egual to six level existing) BEFORE is done correct or wrong

- when in the main a user make a level a feedback coming back from the class level saying if the user made the count correctly or wrong. and i wanna replace the value (1 or 0) in the txt file with the new level result.

So i have all what i need as parameters i think.

name_used to look for the correct line in .txt file with .indexOf
level_choosed to go throught the correct index of that line
level_result (1 or 2) to be replaced with the existing one

Java Code:

public void salvaRisultati(String name_used, int level_choosed, int result_of_level) throws FileNotFoundException{
}
} mh_sh_highlight_all('java');

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Check Specific Value From A Specific Line From TXT File

Feb 8, 2015

I have some problem to understand the way to make this:

In my main class a user can save his name in a txt file (and the system initially will add 6 value equals to 0) than he can choose between 6 level and make it.

example of .txt file data:

mario 0 0 0 0 0 0
carl 0 0 0 0 0 0

AT THIS MOMENT i just made other class and they work, is this new one that is hard for me. I'm trying to make a class that:

1- (first method called verificaRisultati) take name_used and level_choosed from the main and go to check in the .txt file if that level before was done right(1) or wrong(0)

and return something like "before you made this level properly" or "before you made this level incorrectly" AND THEN let the user start with the level.

2- (second method called salvaRisultati) at the end of the level i wanna pass the result (correct/incorrect) to another method of this class that will save the value (1 or 0) associated to the user in the right position.

This is the class that i'm writing:

Java Code:

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
public class ResultUsers {

[Code] ....

I really need some hint and some code example because I'm stuck. How I can take exactly the line with the user name? How I can correctly split the line in an array and then read/modify the value for that level?

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Write A Specific Byte Sequence To A Specific Memory Location On A Removable Storage Drive?

Jan 29, 2014

I am trying to write a specific byte sequence to a specific memory location on a removable storage drive. Does Java allow me a way to do this? I know the dangers in accessing memory, but the memory location of the data that will be written will never change.

how to assign a variable a memory location.

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File Handling In Java - Modifying Specific Line

Mar 12, 2015

How to modify a specific line of a file in java. File name must be accepted from command line.

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Searching TXT File For A Specific Keyword And Output Whole Line

Feb 12, 2014

I need to search a txt file for a specific keyword and then output all the lines that contain that keyword. Right now I I think I have my search done but I don't know how I would print the whole line.

TextIO.readFile("xxx.txt");
String search;
String word;
int count=0;
TextIO.put("Please enter your search word: ");
search = TextIO.getln();
while (!TextIO.eof()) {
word = TextIO.getln();
count = count+1;
if (search.equalsIgnoreCase(word)==true){
TextIO.put(count + "-");
TextIO.put(word);

Right now it doesnt even let me enter in any values for the search. Not sure what I've done wrong..

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Read Lines With Specific Characteristics From A File / Exclude All Others Line?

Jan 16, 2014

I am trying to write method to read lines with some specification from a file. for Example,

my text file contains following:--

12-01-0113:26San Jose12.99DVD
12-12-3009:40Miami13.50Music
14-08-3010:20Arizona16.03Scientist
11-07-1009:10New York25.00ColdPlay
14-08-3010:20Arizona18.04MeetYou
14-08-3010:20Arizona50.03Scientist
11-07-1009:30New York25.00ColdPlay
11-07-1009:20New York25.00ColdPlay

tab separated values, for different columns and these are the lines only I want method to read.Now suppose if any is there as below, or even enter

12-01-0113:26San Jose12.99DVD
12-12-3009:40Miami13.50Music
14-08-3010:20Arizona16.03Scientist
11-07-1009:10New York25.00ColdPlay
14-08-3010:20Arizona18.04MeetYou
[new lines]
14-08-3010:20Arizona50.03Scientist
11-07-1009:30New York25.00ColdPlay
//This line should not be read
even this should not be read #$%^&
11-07-1009:20New York25.00ColdPlay

That particular line should be escaped. Till now I have done when the file format is proper, and it is as below:--
 
public static void main(String[] args) {
BufferedReader br = null;
String temp = null;
List<String> arrayRead = new ArrayList<String>();
try{
br = new BufferedReader(new FileReader("D: estingSalesData.txt"));

[code]....

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Change Specific Lines In Text Inputted From A File

Nov 29, 2014

I can't seem to understand how to change certain line of text, inputted from a file. For this I really don't know where to begin. I have got the input from the file. But I want to change like very other line in the file. Can't seem to understand how this could be done. Is there away to access specific lines from the file and edit them? So far, i have this:

import java.util.*;
import java.io.*;
public class ChangeEveryOtherLine {
public static void main(String[] args){
//Constructing file object representing input file
File inputFile = new File("input.txt");

[Code] .....

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Processing Text File Into Specific Format In Java

Mar 30, 2014

I have text file of this form:

0file:/home/lenovo/mallet/cleantweet/242874110.240622335890878130.1593492469451548700.130861040068201270.1129582267689684590.0868854788292128480.
0807757885763000940.078431372549019660.0604575163398692850.02926967888604717320.020389315146348393
1file:/home/lenovo/mallet/cleantweet

[Code] ....

Am i going in correct way?

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Read Text File And Perform Operation On Specific Columns

Dec 9, 2011

I am somewhat of a java newbie (learned it awhile back and just getting back to programming some again.) I have a text file of data much larger than this, but here are the first ten rows and first 10 columns.

39755320111041730140.633038085-2.117082366149.069997
39850320111041730150.633038085-2.117082511148.309997
39955320111041730160.633037998-2.117082293149.509997
40055320111041730170.633037945-2.117082351149.239997
.......

I can read and write all the data back out to files. But I am not sure about a few things.

First would it be best to use BufferedReader and OutputStream such as:

public static void main(String[] args) throws IOException {
BufferedReader bReader = new BufferedReader(new FileReader ("testdata.txt"));
BufferedOutputStream bytesOut = new BufferedOutputStream(new FileOutputStream ("outfile.txt"));

Second, I was then going to initialize an array but I might have 30 or more columns of data, of which I might perform and output only 10 columns to my output.txt file so is this a good way?

Third, I only want to perform operations (such as average the data, convert units or multiply two columns together) on 10 of the 30 plus columns and print out results to output.txt file. For example, In testdata.txt file above, I want to skip first seven columns. I then want to take column 8 and multiply by 100 then divide by 3 and output result to output file. I want to do same for column 9. Column 10 I want to multiply by different number (by 3.5).

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New Line In Text File

Jun 9, 2014

I'm trying to print the information entered into my TimeClockApp to a text file named timeclock.txt. Everything is writing to the text file, except instead of adding each part of the run through the app to one line, it is saving each part on a separate line like this:

i
3
2014/06/08 15:32:29

To ensure that each run through the time clock is recorded on a different line in the text file, I want it to add each item like this instead:

i 3 2014/06/08 15:32:29

I have tried to execute the

out.println(timeClock.get(i)); line as out.println(timeClock.get(i) + " "); and out.println(timeClock.get(i) + "
");,

but have had no luck in fixing this problem. My current code that writes the information to the text file is as follows:

// write items to timeclock.txt file
try {
// open an output stream for overwriting a text file
PrintWriter out = new PrintWriter(
new BufferedWriter(
new FileWriter(fileName))); // (filename, true) when

[Code] ....

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Deleting First Line From A Text File

Feb 14, 2015

I am want to delete the first line of text file using RandomAccessFile class. My Input file "bulkwfids.txt" has the data as below:

234567
345578
455678
566667

Expected output needs to be(first line deleted):

345578
455678
566667

But the actual ouput I am getting is as follows:

78
56
345578
455678
566667

Here is the code snippet I have written:

import java.io.*;
class DeleteLine {
public static void main(String [] args) throws FileNotFoundException, IOException {
  RandomAccessFile raf = new RandomAccessFile("C://Users/hp/Desktop/bulkwfids.txt", "rw");
raf.readLine();
 
[Code] .....

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Reading Text File With Specific Input Format - Output Formatted Report

Apr 10, 2014

Here's a link to it : [URL] ....

The basic gist is it's "A program that reads in a text file that uses a specific input format and uses it to produce a formatted report for output."

Specifically :"For this lab you will write a Java program that produces a simple formatted report. The program will prompt the user to enter a file name. This file must contain information in a specific format (detailed below). Each "block" of the file contains information for one player in a competition -- the name of the player followed by a number of different scores that that player achieved. The program should find each player's average score, median score and best and worst scores and display them in a line on the final summary report. The program should also determine which player has the highest average score and which player has the lowest average score."

I get the following errors when I try and compile it:

Enter an input file name: Project11.txt
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException... -1
at java.util.ArrayList.elementData(Unknown Source)
at java.util.ArrayList.get(Unknown Source)
at Project11.getMedian(Project11.java:68)
at Project11.main(Project11.java:27)

I get that the error(s) reside in lines 68 and 27, among problem other areas, but I'm not exactly sure how I can fix them.

Here's my code:

import java.io.*;
import java.util.*;
public class Project11 {
public static void main(String[] args) throws IOException{
Scanner in = new Scanner(System.in);
System.out.print("Enter an input file name: ");
String input = in.nextLine();

[Code] ....

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Scanner Only Reading First Line Of Text File?

Feb 6, 2015

I have a code that imports a text file [URL] .... and has a variety of methods for sorting through it. The file is structured differently when loaded into the environment, as each line begins with a movie and lists all of its actors. Each line has a movie title, then its release date in parentheses, and then the actors in the movie all listed and separated by slashes (Ex: /lastname 1, firstname 1/lastname 2, firstname 2/etc.....

Well I tried to create a method to search all the actors in the file for an inputted word and return the ones that have that word somewhere in their names. I managed to get it to work, but the code only runs for one line of it. How should I get this to do what its doing, but for EVERY line?

Code is here: [URL] ....

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I/O - Read 11 Values From A Text File / Each Value On Separate Line

Mar 26, 2014

So I'm trying to read 11 values from a text file, each value on a separate line. The first value I use as loop control to run through calculations on the other ten and finally output both the numbers and the calculations to the console and an output file. I'm not getting a compiler error or a runtime error but my loop seems to stop after reading the first line. It also doesnt seem to be writing to my output file but does create it when I run the program. This is what my text file looks like

10
150.4
88.4
-3.14
499.4
799.4
1299.8
0
1900.2
901.7
4444.4

This is what my program looks like

import java.util.*;
import java.io.*;
 public class assignment7scratch
{
  Toolkit_General toolKit = new Toolkit_General();
  public static void main (String[]args)throws IOException

[Code] .....

so I dont get an error but this is what my output looks like

----jGRASP exec: java assignment7scratch

This program reads a list of values representing number of miles driven by individuals. It will output the dollar amount their rental cars cost.

Number of miles traveled on the left as well as amount reimbursed on the right

-----------------------------------------------
Miles Driven Amount reimbursed
150.427.072

----jGRASP: operation complete.

it also doesn't write anything to my output file, though it does create one.

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Reading A Text File And Inserting Line Into String?

Dec 6, 2014

I am having issues insert each line of the simple textfile into a specific varible I want it to go to. For example my text file is ordered like this

Dallas
78 F
North, 15 mph
dallasimage
Denver
29 F
South, 10 mph
denverimage

and I want Dallas in city variable, 78f in temperature variable, and so on until text ends, at the moment is all goes into city variable, it all prints from there! I tried inserting it into an array but it would read all the lines previous to it in addition to reusing readline and all failed.

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
public class Textreader {
public static void main(String[] args) {

[code]....

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Writing To Text File - Print String On One Line

Oct 19, 2014

I am writing to a text file via user input and it is saving all the user input to the file but it is just printing one word per line. I would like it to print the string on one line and print the next string on the next line upon them hitting enter.

public void textFile() {
Scanner reader = new Scanner(System.in);
System.out.println("Enter file name: ");
String fileName = reader.next();
File f = new File(fileName);
PrintWriter p = null;

[Code] ....

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Swing/AWT/SWT :: Append Text To Textarea From Another Class

Aug 2, 2014

Class 1 open main frame

Class2 add panel for main frame

Class3 append text to Jtextarea (of panel class2)

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Take Input From User And Append Some Text To It - Output Null

Sep 20, 2014

I'm using one method to take input from the user and append some text to it, then I am trying to return the value of the variable and use another method to print it out. But for some reason whenever I try doing this I can't print out anything and I only get a "null" output. Why this is happening?

package Homework3;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Homework3 {

[Code] .....

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Search For A String In Large Text File Of 1 GB Size And Print Line When Match Found

Feb 18, 2014

I have a large text file of 1 GB size. I need to print the line when a matching word is found in a particular line. Below is the code I am using. But if there are many lines that has the matching word, it's taking lot of time. Any solution to print the lines much faster.

Scanner scanner = new Scanner(file);
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
if(line.contains("xyz")) {
System.out.println(line);
}
}

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JUnit Test - Read From Text Line By Line And Save Words In FileOnTable

Nov 21, 2014

I have wrote this class who read from text line by line and save the words in fileOnTable.. Now i don't know what to read in ReadOffer to save the words in object offers and return this.. One more question.. What JUnit test can write for this code..?

package com.example.crazysellout.UserSide;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

[Code] ....

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JSF :: Append Dollar Symbol And Format Comma Of Currency Value In Input Text

Feb 17, 2014

I have a form with primefaces input text(p:inputText).Many of the input text values are of the type currency in dollars.When i try to use ,it mandates the user to include $ symbol prepended to the value.Is there any way using which on blur of the field the dollar symbol is prepended and the number gets formatted with proper commas.

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