I have to write a program that reads from a file like this( in attached file)
after line 28 ,column 5 have H,G,S...,
I WANT TO READ THIS COLUMN AND SPLIT THE 4 AND MORE H SAME HHHH AND MORE IN ONE SEPARATE FILE AND IN ANOTHER FILE HAVE EEEE AND MORE ....
personid gender height class
1 female 1.6 short
2 male 2.0 tall
3 male 1.85 medium
4 female 1.9 medium
5 male 1.7 short
6 female 1.8 medium
7 female 1.95 medium
for eg i have to find minimum and maximum height from column height.
I want to read this csv file and store contents on column basis; as date (single array) for all dates. open, high, low and close and be able to manipulate individual elements of the array such as Sum += close[i];
public void pratice() throws Exception {
// Create a File instance
BufferedReader br=new BufferedReader(new FileReader("gtk.csv"));
content = new String[1000];
while(content !=null) {
content[++count] = br.readLine();
[Code] .....
the file looks like this
date Open high low close
12-12-2011 15.00 15.40 14.5 15.2
11-12-2011 15.02 15.70 14.9 15.00
10-12-2011 14.70 16.00 14.70 15.02
...
I am trying to read a text file into Java and split the text into tokens. Eventually I want to be able to count the number of instances of a specific word. However, at this point, when I run the file, all I get is the location of the file rather than the text in the file.
import java.util.*;
import java.io.*;
public class textTest3 {
/**
* Prints the number of words in a given file
*
* @param args
* @throws IOException
*/
[Code]...
How to split an XML file in java? what function and package should we use?
View Replies View RelatedI have multiple text files that contain several docs. my files look like this:
<doc id 1> some text </doc>
<doc id 2> some more text</doc>
...
As output I want to extract the text between the tags and then write the text into several files like 1.txt, 2.txt ......
here is my code so far:
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
[Code] ....
I can not seem to get around how to print the text into several files.
I have included split() to put a string read from a given file into indexed array. Looking for a word position (not char position number in addition to the line number I have already written. Line number works fine, however word position isn't quite right.Below is my code:
import java.io.*;
public class Word implements Comparable, TreeComparable{
String word;
int count;
int wordpos;
ObjectList lines;
private SuperOutput so;
[code]....
For example, if I had a text file with one line such as "first, second, third", would there be a way to make it so I could make "first" go to the first array list, "second" to the second, and "third" to the third?
I haven't posted any of my code so far as it wouldn't be right to be handed the finished code on a platter and I should put the work into it, but I'd just need a loop to make it go through the rest of the lines in the text file to add all the first, second and third parts of each line, right?
(I already know how to input data from a file, but not how to split up a line into bits to put into different array lists).
How i can get the data from a file, for a key that have multiple values without using split method and i want to store that data in an array
file name:"new.txt"[contains below data]
Name=google.com, yahoo.com,facebook.com
Attachment=abc1,abc2,abc3
I am successfully able to do this using following code
Properties props = new Properties();
String configFilePath = (Cjava_confignew.txt);
props.load(new FileReader(configFilePath));
String TestName = props.getProperty(Name);
String test[] = TestName.split(,);
Now i just want to store the values for key "Name" in array without using TestName.split(,); but i am not able to do this.
I have also used .yml file to avoid this but did not succeed, some way to do this
file name test.yml
Name
-google.com
-yahoo.com
-facebook.com
Attachment
-abc1
-abc2
-abc3
i want to store multiple values for single key(Name) within the array
I am trying to merge two files together using the Apache Commons CSV library. I figured it was easier to use this than to write my own implementation.
The first problem is that the output contains the underlying class logic and as a results my output contains a bunch of un-needed data. How do I get rid of this? I just want the column and row data, nothing else.
Example
I want this:
customerNo, firstName, lastName, birthDate, mailingAddress, married, numberOfKids, favouriteQuote, email, loyaltyPoints
1, John, Dunbar, 13/06/1945, 1600 Amphitheatre Parkway Mountain View, CA 94043
But I get this:
CSVRecord [comment=null, mapping=null, recordNumber=1, values=[customerNo, firstName, lastName, birthDate, mailingAddress, married, numberOfKids, favouriteQuote, email, loyaltyPoints]]
CSVRecord [comment=null, mapping=null, recordNumber=2, values=[1, John, Dunbar, 13/06/1945, 1600 Amphitheatre Parkway
Mountain View, CA 94043
The second problem is that I just want the row Headers from the first file, but the row headers from my second file are still being included in my output. I used withSkipHeaderRecord(true), but it didn't have the desired results.
Code is below.
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Reader;
import java.util.ArrayList;
[Code] .....
I am having a hard time compiling this code: I need to calculate the gpa of each student in the csv file which looks like this:
ID First Name Last NameClass LevelDesired ClassCreditsPoints GPA
9410917 Reagan Walls SophomoreCOMP 18275 77 1.026667
13498070 Stewart Fry Senior COMP 10070 92 1.314286
37500410 Talon Witt Junior COMP 100107 389 3.635514
47845461 Ciara Beard Grad COMP 11097 196 2.020619
The GPA column needs to be added by dividing the points by credits. I also need to sort the class level column by class level. For example:
ID First NameLast NameClass LevelDesired ClassCreditsPointsGPA
9410917 Reagan Walls SophomoreCOMP 18275 77 1.026667
46309070 Ivy Valdez SophomoreCOMP 1006 16 2.666667
37405616 Miriam Welch SophomoreCOMP 11057 179 3.140351
Here is my code:
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.lang.String;
import java.io.File;
import java.io.PrintStream;
import java.io.Serializable;
import java.io.ObjectOutputStream;
import java.io.FileOutputStream;
import java.util.Comparator;
[code]...
I am taking the two things that needed to be outputted, one at a time. Working on the GPA portion.
how to set the columnwidth in csv file using javacode.
I used FileWriter class to upload data into the csv file but csv file is taking default width while showing content. Is there a way to set the fixed column width or set width dinamically based on value?
I need to print contents of database to excel file.Apache POI is the solution but I am not finding a way to print the DB column names/headers into the excel.
E.g.:
incase csv we have opencsv CSVWriter writer = new CSVWriter(new FileWriter(fileName));
System.out.println("writer");
writer.writeAll(rs, true);
will print the db contents with the column headers dynamically whatever the query may be.
Any solution where we can print data and column names without know the query previously as we are getting query at the run time and each time the query is different.
INPUT
DATABASE
Emp Id. Emp Name
111 Mr.Test
EXCEL
Emp Id. Emp Name
111 Mr.Test
I am working on a project that requires me to build a database with random access file, representing products, the base product contains a name (about 30 characters), a price (double), and a quantity (integer). I have worked on this project for probably 15+ hours and have tried so many things and feel like I've barley made any progress...
The part i am really struggling with is taking the data from the text file and creating an object array with it using the product class. Once ive accomplished that, i have to use that data to create a random access file with the data.
Here is the base Product class that must be used to create the objects for the array.
public class Product
{
public String pName;
public String stringName;
public double price;
public int quanity;
[Code] .....
And then here is the data from the text file that i must extract to use to create product objects.
Dill Seed,938,34
Mustard Seed,100,64
Coriander Powder,924,18
Turmeric,836,80
Cinnamon (Ground Korintje),951,10
Cinnamon (Ground) Xtra Hi Oil (2x),614,31
Cinnamon (Ground) High Oil (1X),682,19
These continue for about 40-50 entries, they are not separated by a blank line though i had to add those so it would display correctly, each entry is on its own line with name separated with spaces, then price after a comma, then quantity after the second comma.....
New to programming. Am supposed to create a program that reads a text file (of integers) and computes a series of computations on these integers. I don't have the code for the integers in my code yet, (i know how to do those), but am struggling getting the array to simply print in the print writer. I have the user select a text file, read the file with a scanner, and then save the computations done from my code into another file. specifically, the problem is as follows: Write a program that uses a file chooser dialog to select a file containing some integers. The file contains an integer N followed by N integers. The program then uses a file chooser dialog to let the user specify the name and location of an output file to write results to.The data written to the output file will be as follows
(1) The original list of N numbers from the input file,
(2) The original list of N numbers printed in reverse order of how they appear
in the input file.
(3) The sum and average of these numbers,
(4) The minimum of all the numbers,
(5) The maximum of all the numbers.
[import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;
[Code]....
Well my code is supposed to ask for an input file and then (ex: input.txt), read the input file and create an output.txt file with the anagram for the words in the file. Also it should be displayed on the screen. However my code doesn't display the anagram on screen or the output file!
Heres is the code:
import java.io.*;
import java.lang.*;
import java.util.*;
/* This program will read a file given by the user, read the words within the file and determine anagrams of the given words. If the file that the user inputs is empty, then the program will output "The input file is empty."
* The program will read the file line by line, counting the total number of words read. If there are more than 50 words, "There are more than 50 words."
* will be printed, and the program will terminate. After each line is read, the words in the line will be separated,punctuation characters will be removed, and upper case characters will be switched to lower case.
* If any word is larger than 12 characters, that word will not be considered in the total amount of words in the file and it will not be sorted.
* After each word is read, the letters will be sorted and stored into an array containing each
* word's 'signature'. After all the words have been read, words will be printed to the output file on the same line based upon their signature.
*/
public class Anagram {
//Creating constants for maximum words in file and maximum chars in word
public static final int MAX_CHARS = 12;
public static final int MAX_WORDS = 50;
[Code] ....
I am trying to create a file browse option in my jsp and later after browsing, all i want to do is to read that file in my jsp without saving it into that database so that i can perform encryption for it and save that encrypted file later into my database. please provide reference link so that i can refer to some applications and and move ahead with my work.
View Replies View RelatedI want to read the contents of a log file present on the server, and trigger email along with the log file attached using JSP.
View Replies View RelatedI am trying to write to a file but everything I have tried doesn't seem to work. What I want to do is read a file and then output back to the same file on a new line. The text file contains the sentence "Java is a programming language".
import java.util.Scanner;
import java.io.*;
class HW1B {
public static void main(String[] args) {
Scanner fileIn = null;
try {
fileIn = new Scanner (new FileInputStream("text.txt"));
[Code] ....
These are the errors :
HW1B.java:19: error: no suitable constructor found for Scanner(FileOutputStream)
fileOut = new Scanner (new FileOutputStream("text.txt"));
^
constructor Scanner.Scanner(Readable) is not applicable
(argument mismatch; FileOutputStream cannot be converted to Readable)
constructor Scanner.Scanner(InputStream) is not applicable
[Code] ....
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
2 errors
I am trying to read a file and input each line of the file into an array. I have not set the array size as I was hoping to fill the array using a while loop. Unfortunately the scope of the array does to work inside the while loop so I am being told that the array 'students' has not been initialised even though it has just outside of the while loop. Is it possible to do what I am trying to without having the array initialised in the while loop as surely the array will be reset every time if it was in the while loop? Here is my code:
public static void students(String file) throws FileNotFoundException {
try {
File studentInfo = new File(file);
Scanner input = new Scanner(studentInfo);
String[] students;
[Code] ....
I am writing a program that needs to read from a file, but I can't even get it to open. I have tried saving the .txt file 2 different ways. First, I saved the file to my src/package folder. Then I tried just the src folder. Then I tried going through Import/general/filesystem/ and selecting the root directory. However, my program is still unable to open the file.
private void readFile(String filename){
Scanner file;
try {
file = new Scanner(new File(filename));
System.out.println(file);
file.close();
} catch (Exception e){
System.out.println("Could not find file");
}
}
What am I doing wrong? How/where should I put the file?
Write a method that returns the sum of all the elements in a specified column ina matrix using the following header:
Public static double sumColumn(double[][] m, int columnIndex)
Write a test program that reads a 3 by 4 matrix and displays the sum of each column.
import java.util.*;
public class SumColumns {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
final int ROW = 3;
final int COLUMN = 4;
[Code] .....
I am trying to read from a file and storing them back in the file but its not working, I think the way I am reading is wrong or something. Is the for loop correct way ?
try {
in = new BufferedReader(new FileReader("Events_data.txt"));
for (int x = 0; x <= Events.length; x++) {
tid = in.read();
te = in.readLine();
[Code] .....
So i am creating a File object which has a text file passed to it. I then try to do logic with it using a BufferedReader. However, I get a FileNotFoundException on the using my code below. The Error is on the BufferedReader line. I
Java Code: System.out.println("--Reading text file--");
File file = getFile(c,fileName) // Returns a File object.
System.out.println(file); // Shows me the file is looking correct. Displays contents to console.
BufferedReader br = new BufferedReader(new FileReader(file));
System.out.println("BUFFERED");
while((line = br.readLine()) != null) {
try {
// Do Logic
}
catch(Exception ex){
ex.printStackTrace();
}
br.close(); mh_sh_highlight_all('java');
The program is reading from file input. how can I replace hate with love the file contains only one line.I hate programing!
Java Code:
[import java.util.Scanner;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
public class Program3 {
public static void main(String[] args) {
Scanner fileIn = null;
[code]...
You are given a text. Write a program which outputs its lines according to the following rules:
If line length is ≤ 55 characters, print it without any changes.
If the line length is > 55 characters, change it as follows:
Trim the line to 40 characters.
If there are spaces in the resulting string, trim it once again to the last space (the space should be trimmed too).
Add a string... <Read More> to the end of the resulting string and print it.
I felt as if I did do what they were asking, but for some reason, I'm getting "Sorry, Unable to read file!"."Instead of using file, I did use the location of the file name".Also, I've attached a image of the input looks like and the output.
My CODE:
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
public class Main {
public static void main (String[]args)
{
try{
[code]....