I/O / Streams :: Creating Hidden File

Jul 30, 2006

I want to create hidden files, some sample code for doing this.

View Replies


ADVERTISEMENT

I/O / Streams :: Generate File Tree Structure Of Mounted Unix File System

Apr 22, 2014

I am creating a web application that runs on server X(unix) and it has another unix system mounted on it. I want to generate the file tree structure of this mounted unix file system and show it on to a web application so that users can select a file and move it onto this current unix machine.

I know this sounds stupid and you may want to say why cant we directly copy the file, I am doing a proof of concept and using this as a basis.

View Replies View Related

I/O / Streams :: Retrieving File Directories From A Text File?

Jun 25, 2014

Let's say I have a text file and in the text file exists file directories as such:

'assets/picture1.png'
'assets/picture2.png'

And so on...

How would I then read from this text file and then create those files using 'new File()'?

Here is my code:

private void getFiles() throws IOException{
files = new File[10];
Scanner scan = new Scanner(new File("files.dat"));
int count = -1;

[Code]....

It does print out those files, but it doesn't create them.

View Replies View Related

Buttons Are Hidden

Nov 6, 2014

I have made two classes. See below. But in my second class the buttons will not be show if I run the application.

class 1:

package h01;
import java.awt.Color;
import javax.swing.*;
public class kopieer extends JFrame{
public kopieer()
{
JFrame venster = new JFrame();

[code]....

class 2:

package h01;
import javax.swing.*;
import java.awt.event.*;
 public class kopieerpanel extends JPanel implements ActionListener
{
private JTextField veld1;
private JTextField veld2;
private JButton actieknop;
 
[code]....

View Replies View Related

JSF :: Retrieving Hidden Input

Jun 23, 2014

I have this code

<h:form id="theform">
<h:inputHidden id="user_id" value="3" />
<h:commandButton action="userprofile.xhtml?faces-redirect=true" value="Profile" />
</h:form>

How I can retrieve the value of user_id at page userprofile.xhtml?

View Replies View Related

I/O / Streams :: Get Specific Value From Txt File

Sep 22, 2014

I know that it's possible to retrieve a line from a txt file but say for example my file looked like this:

staff id = 1
firstname
surname
age

staff id =2
firstname Kate
surname Hollar
age 33

staff id =3
firstname Daniel
surname Hong
age 21

It is possible to retrieve just the staff id's?

View Replies View Related

Wheel Of Fortune - Guess Letters That Are Hidden In Characters

Jan 27, 2015

We have to make a wheel of fortune game. Once the above information has been taken, the game can commence. The board should look very similar to the example below if the above input was used. In order to get text to align correctly, use the System.out.format(…) method. It's 14 by 4, so would I use a 2D array? I think I can get the rest done by myself but it's the making of the board I'm having trouble with. Would I need to use a 2D array?

The board is supposed to look something like this to the viewer of the program, but they need to guess the letters that are hidden in the characters. :

* * * * * * * * * * * * * *
* * * * * * * * * * * * * *
* * * * * * * * * * * * * *
* * * * * * * * * * * * * *

These are the hidden values the viewer cannot see and must guess. Therefore, each turn they will guess a letter and the letter will the revealed if the one they said happens to be in the phrase. They will have to get STAR WARS EPISODE IV"

* S T A R * * * W A R S * *
* * E P I S O D E * I V * *
* * * * * * * * * * * * * *
* * * * * * * * * * * * * *

And the concealed letters; are Star Wars episode five a new hope. The # would mean where letters stand. So there first # would be S, the next would be T - and it would eventually spell out STAR WARS EPISODE IV.

So this is the board that's used to display the concealed letter, and there a list of the hidden letters below, like hangman.

import java.util.Scanner;
public class wheelof{
public static Scanner keyboard = new Scanner(System.in);
public static String puzzle1 = "";
public static String puzzle2 = "";
public static String puzzle3 = "";
public static String bonpuzzle = "";
public static String category1 = "";
public static String category2 = "";
 
[Code] ....

View Replies View Related

I/O / Streams :: Clear Old Text Then Add New To File

Aug 12, 2014

I have a code that clear old text then add new text to text file afterthat download the file but the problem my code dose not add new text

FileInputStream fileToDownload ;
private static final int BYTES_DOWNLOAD = 1024;
response.setContentType("text/plain");
String name = request.getParameter("n");
String text = new String(request.getParameter("text").getBytes("iso-8859-1"), "UTF-8");

[Code] ....

How to clear old text then add new text to text file

View Replies View Related

I/O / Streams :: Read € Symbol In A File

Aug 25, 2014

I have a problem with € symbol ... an application write a String content on the file system with following code:

out = new FileOutputStream(strPath + "import.xml");
out.write(trp.getTrpXMLModel().getBytes("ISO-8859-1"));

It's correctly wrote on the file system:

TT;Pierre-H€enri;;Orange Grove;zefezfezfez, Directeur Juridique;TT;;azdaz;01 53 33 56 87;ezfezfez;01 53 33 51 59;.....&ée&ée;;;;;;132;CORDIAL;aaa

But when the application try to read the previous file with following code:

BufferedReader in = new BufferedReader(new InputStreamReader(inStream,"ISO-8859-1"));
String line = in.readLine();

The application isn't able to properly read the symbol ... and return following line, without "€":

TT;Pierre-Henri;;Orange Grove;zefezfezfez, Directeur Juridique;TT;;azdaz;01 53 33 56 87;ezfezfez;01 53 33 51 59;.....&ée&ée;;;;;;132;CORDIAL;aaa

View Replies View Related

I/O / Streams :: File Size Comparison

May 20, 2014

I would like to create a component to detect the file being modify before process.is it the right way to detect the file modification based on file size value?

Below are the flow:

1. Get the file size of a file
2. Used file size value encrypt it with MD5 algorithm, and say it generated us encrypted value "0123sdf"
3. to avoid user modify the file content, before file process, we take the file and do the encryption with md5 again, if it return value "0123sdf", then we are sure it doesn't have modification.

my question:
a. is it the right approach to detect file modification?
b. what the library advise to use or using java.security.DigestInputStream will do?

View Replies View Related

I/O / Streams :: API To Read Metadata From MP4 File

May 13, 2012

I am looking for a pure java api that can read metadata from an mp4 file, I have looked online but all apis I found are wrappers to native code. How to read mp4 with java .....

View Replies View Related

I/O / Streams :: How To Grab Last One Hour Data From Log File

Jul 17, 2014

I have a log file which goes like this..

INFO: Jul 07 00:00:15 DataSource 2zvw8p93107gev14wko86|34e51ca2: Total connections 4 idle 4 busy 0 unclosed orphans 0 pool unknown
PERFORMANCE: Jul 07 00:00:15 Garbage Collection: ParNew 5 51ms in 59 seconds. [SpeedoLoggingBean] Thread SpeedoBean
INFO: Jul 07 00:00:15 Speedo: 2,222,786K of 4,054,528K - 1,831,741K free, 4,952epm, 1 buffered, 216 threads, 49.1% CPU, permgen 173,731K of 262,144K - 88,412K free
Jul 7, 2014 12:00:15 AM org.geotools.data.wfs.v1_0_0.WFSTransactionState commit
SEVERE: number of fids inserted do not match number of fids returned by Transaction Response. Got:1 expected: 0

[code].....

What I need is to grab only the last hour data from this log file?

View Replies View Related

I/O / Streams :: How To Read In A Binary File Correctly

Nov 8, 2014

I have a binary file that has identifiers for the start of each record

You can see here that the record starts with 00 00 and the next record starts with 00 00 etc...

How do I read between these two points throughout the file?

RandomAccessFile database = new RandomAccessFile(databasePath, "r");
int start = 0;
int end = 0;
database.setLength(start);
database.seek(end);

The first start would be the start of the file, the next start would be the end of the first start and so on..

I'm just not sure how to put that into a loop.

View Replies View Related

I/O / Streams :: File Not Created Until Program Exit

Aug 28, 2014

I have been going over my code line by line, over and over again for nearly and hour now...When I execute method `file.createNewFile()`, the method returns true and throws no exceptions. It even says that the file exists. However, the file is not created and cannot be accessed until the program has exited.

File portLib = new File("");
private class RememberPortAction extends AbstractMenuItemAction
{
methods...
protected void actionPerformed() {
LibraryCreator creator = new LibraryCreator(self, logger);
File newPortLib;

[code]....

View Replies View Related

I/O / Streams :: FileOutputStream Is Not Writing Data To A File?

May 25, 2014

My program creates a file but cannot write to it and i cannot figure out why.

How can i fix this code so that the FileOutputStream writes the String "Output" to the file HighScore.

public boolean ScoreWriter(int HighScore, int ScoreNum){
boolean writ = true;
System.out.println(HighScore + " " + ScoreNum);
try{
File ScoreFile = new File("HighScore");
if (!ScoreFile.exists()){
ScoreFile.createNewFile();
}else if (ScoreFile.exists()){
ScoreFile.delete();
ScoreFile.createNewFile();

[code].....

View Replies View Related

I/O / Streams :: Appending To Existing File Instead Of Overwriting It

Jul 24, 2014

I do most of my file I/O with {Scanner} for input and {PrintWriter} for output. I've got lots of places in my code that looks like:

Scanner source = new Scanner( new File( sourceName));
PrintWriter dstntn = new PrintWriter( new BufferedWriter( new FileWriter( dstntnName)));

But when I call the constructor for {PrintWriter} up above, it overwrites whatever the original contents of the file designated by {dstntnName} were, doesn't it? Is there a way to call the constructor so that any future writes to it simply append to the original contents, instead of overwriting them?

View Replies View Related

I/O / Streams :: Create Blank Xml File On Program Startup

Oct 23, 2014

When my app starts up is it possible to create a blank xml file in the c drive? so I can use it later on down the line

View Replies View Related

I/O / Streams :: Divide A Text File Into Blocks Of 128 Bits

Feb 7, 2006

I have to divide a text file into blocks of 128 bits. I think i must use the ByteArrayInputStream and ByteArrayOutputStream classes. is there any website showing how to user these two ByteArrayInputStream and ByteArrayOutputStream classes in detail. or it would be much better if you could show me a portion of the code.

View Replies View Related

I/O / Streams :: POI - Log File To XLSX / Writing Data In Unreadable Format

Jul 16, 2014

When I am trying to read data from BufferedReader and writing into excel using FileOutputStream object with POI APIs then i am getting the data in excel file in bad formats. you can check the log file and excel file attached for more information.

Here my problem is I cannot use BufferedWriter in place of FileOutputStream because POI class XSSFWorkbook only have one write method and we can only pass FileOutputStream class object there.

public void readFile()throws IOException {
BufferedReader inputStream = null;
FileInputStream fis=null;
InputStreamReader isr = null;
//Blank workbook
XSSFWorkbook workbook = new XSSFWorkbook();

[Code] .....

View Replies View Related

I/O / Streams :: Unable To Create A Print Writer To Write To File

Apr 25, 2014

I am completing a USACO online problem and am trying to create a print writer to write to my file(ride.out). I did this:

PrintWriter out = new PrintWriter(new BufferedReader(new FileWriter("ride.out")));

However, a load of undefined constructor errors come up for PrintWriter(BufferedWriter) and BufferedWriter(FileWriter). I have imported java.io.* so I don't know what the issue is. This has worked before.

edit: bufferedreader? i give up(not literally)

View Replies View Related

I/O / Streams :: Escaping Double Quotes Be Applied To Reading From A File?

Sep 26, 2014

If I'm using an xml file and the piece of data I want from the file looks like Staff id ="Test";

Is it something like this? Only seen two examples of it but I'm not sure they were reading from a file like myself.

Staff id = """ + Test + """;

View Replies View Related

I/O / Streams :: Reading From And Writing To A File Then Read Again Including Data Written

Oct 11, 2014

I'm having a bit of trouble with using the Scanner and the Printwriter. I start with a file like this (1 = amount of Houses in the file)

1
FOR SALE:
Emmalaan 23
3051JC Rotterdam
7 rooms
buyprice 300000
energylevel C

The user gets (let's say for simplicity) 3 options:

1. Add a House to the file,
2. Get all Houses which fullfil requirements (price, FOR SALE / SOLD etc.) and
3. Close the application.

This is how I start:

Scanner sc = new Scanner (System.in);
while (!endLoop) {
System.out.println("Make a choice);
System.out.println("1) Add House");
System.out.println("2) Show Houses");
System.out.println("3) Exit");
int choice = sc.nextInt();

Then I have a switch for all of the three cases. I keep the scanner open, so Java can get the user input (house = for sale or sold, price = ... etc). If the user chose option 1, and all information needed is inputted and scanned, the House will be written to the file (which looks like what I typed above).

For this, I use try (PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("Makelaar.txt", false)))). This works perfectly (at least so it seems.)

If the user chose option 1, and all requirements are inputted and scanned, the Houses will be read (scanner) from the file and outputted. For this I use the same Scanner sc. This also works perfectly (so it seems atleast).

My problem is as follows: If a House has been added, I can only read the House(s) which were already in the file. Let's say I have added 2 houses, and there were from the start 3 houses. If option 2 is chosen, the first 3 houses will be scanned perfectly. An exception will be caught for the remaining 2 (just added) Houses. How can I solve this? I tried to close the Scanner, and reopening it, but apparently Java doesn't agree with this

View Replies View Related

I/O / Streams :: Report Generation Tool For Huge Data In Different File Formats

Apr 8, 2014

I need to generate reports for huge data (around 2 to 5 lakh records) in different file formats (PDF , XLS , RTF , XML) in my web application.

Data will be fetched from database.

I have been searching for a best open source report generation tool and ended up on choosing on Dynamic Reports.

Aspose , is licensed and unluckily we could not afford to at this moment.

Whether i can use Dynamic Reports , or is there any other tool available.

View Replies View Related

I/O / Streams :: Unable To Write Sample Data Into Newly Created File

Nov 29, 2014

My code below creates the 2 files successfully, but it is not able to write the sample data into the newly created file. I can't figure out the reason why.

Another strange thing is that when I tried inserting System.out.println calls for debugging, nothing prints out.

try{
// stuff here
}
catch(FileNotFoundException fileNF){
String dirString = System.getProperty("user.dir");
String defaultFile = "config";
String currentFile = "currentconfig";
Path filePath = Paths.get(dirString, defaultFile);
Path filePath2 = Paths.get(dirString, currentFile);

[Code]...

View Replies View Related

I/O / Streams :: Does Printwriter Always Truncates Existing File To 0 Size Before Adding Any New Data

Jun 13, 2014

Does printwriter always truncates the existing file to 0 size before adding any new data ??

View Replies View Related

Read Text File Into Object Array And Creating Random Access File

Dec 8, 2014

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.....

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved