Server For Storing XML Files
Mar 26, 2014
I've the following requirement. A centralized server needs to be established using java code. The server's responsibility is receiving the status of the each client machine as a XML file and storing it in the server's disk space. The client machine also runs the java code to send the status to the server as an XML file in a daily basis. I've planned to create a SOAP webservice in server machine and client machine will invoke the soap webservice to send the status. Do I have to establish any FTP server for storing the XML files? Is there any other better solution for this requirement?
Do I have to establish any FTP server for storing the XML files?
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Jul 29, 2014
I need to store the data of a bunch of objects of a particular class in files in a predefined directory. Later, I want to get all the files from the directory and turn them into the objects again. Ideally, I'd like to have one file per object and have the files be human-readable and editable without too much difficulty. The class used by the objects will likely be subject to change in the future, as well. To keep things simple, all the data members are either primitives, Strings, or arrays of them. What is the best library/API to use to deal with this situation? Or should I write my own classes for these operations?
I read into serialization, but I read that it doesn't deal well with classes that are frequently modified. I also found articles on Preferences, but none of the ones I saw seem to explain how to best handle reading and writing to and from multiple objects, especially when I don't know a prior all the objects that were written to disk.
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May 15, 2014
I can able to transfer files from my local system to FTP server(port no:21) with " org.apache.commons.net.ftp " libraries.
and also I can able to transfer files from my local system to SFTP server(port no:22) with of "com.jcraft.jsch.Channel " libraries .
But, i'm unable to transfer files from " FTP server to SFTP server " and " SFTP server to FTP server "..!
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Feb 8, 2014
I'm creating ftp program which server will send not existing files on client to him.
There is method responsible for creating connection and sending list of files on client written by me.
Java Code:
[JAVA]//client method
public void enableClient() throws IOException, ClassNotFoundException {
System.out.print("Rozpoczęto działanie klienta");
strIP = jtfIP.getText();
intPort = Integer.parseInt(jtfNrPortu.getText());
clientPath= "C:/serweris/";
sck = new Socket(strIP, intPort);
[Code]....
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Jun 5, 2013
I'm making a website with articles (like a blog). I have a webpage called admin.html where you insert the data of the article (title, post etc).
Admin.html calls to a servlet and this sends the information to a SQL Database and it stores and my index.jsp calls to database and show the articles.
This works perfect, and a non-programmer can insert new articles. The problem is that I need to create an .html file for every article/post and save it into my server online.
For example if I create "CoolArticle", I need the file "CoolArticle.html" and save it in my hosting.
How I can do it? I never have seen examples online, all were local, so I can't continue.
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Mar 24, 2015
I want to develop a dynamic webpage (using JSP & tomcat hosted on windows server) which will connect to unix server and on button "Show Files" click on dynamic webpage it should display all the files present in the unix server.
The button click should display the files which i can see when i run "ls -ltr" in unix server home directory.
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Jun 30, 2014
I have a code that uploads files in server after browsing folders and files then get the paths of files but I have a problem in getting the paths
List items = upload.parseRequest(request);
Iterator iterator = items.iterator();
while (iterator.hasNext()) {
FileItem item = (FileItem) iterator.next();
if (!item.isFormField())
{ fileName = item.getName();
root = getServletContext().getRealPath("/");
path = new File(root + "/uploads");
[Code]...
list1 must has paths that I want but I do not get the paths of upload files
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Jul 27, 2014
I am developing a web application using JSF-2.0 on weblogic 10.3.6. I am using Facelets as VDL. I have 5 different machine. They are different according to their OS and their geographical location. On my first xhtml page server (machine) is decided. Then on next page file upload and rest of processing takes place. My restriction is that SSO configuration can be done on only one machine.
So I am restricted to using xhtml files from only my primary server where SSO configuration is done. But I have to connect to servlets or managed-bean of different machine as requests are machine specific and file needs to be uploaded to those machines for processing. So I cannot use redirectUrl as I need to be only on one machine. Is it possible that xhtml on one server can talk to managed-bean on other server(different machine)?.
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Apr 1, 2014
I am working on a chess game. I need to construct a game room where all the player are present and room chat is up. Also some tables where games are being played. Now my question is how to create this game room?
To me this room must need to be like static or global (if I am not mistaken) that is up when server starts and players can join this room and should be down when server is done. How can I implement such room that would stay up for infinite time.
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Oct 26, 2014
What step to know to develop software..
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Apr 19, 2015
Working on a project and am in need of some quick guidance to wrap things up. I have a functioning compression server that will create two files after the user gives it some input and a "magic string" to know when to stop reading input for that specific file.
I now need to connect a UDP web server to that compression server. the web server will read from the HTTP POST Request the data that was uploaded and send it to the compression server to create the two files... i have included both programs below
Web Server:
import java.io.*;
import java.net.*;
import java.util.*;
final class HttpRequest implements Runnable {
//Declare Constants and Variables
final static int BUF_SIZE = 1024000;
final static String CRLF = "
";
[Code]...
Compression Server:
import java.net.*; // for DatagramSocket, DatagramPacket, and InetAddress
import java.io.*; // for IOException
import java.util.zip.*;// for Zip
public class CompressionServer {
private static final int ECHOMAX = 65535; // Maximum size of echo datagram
private static final int BUFFER = 2048; // Buffer size for writing to Zip File
[Code]....
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Apr 13, 2015
In a program I created, I'm using a text file that contains some texts needed for the program. The method relevant to this is something like the following.
private String wordgen(){
try {
BufferedReader reader = new BufferedReader(new FileReader("src/Resources/adjectives.txt"));
Random rand = new Random();
int low = rand.nextInt(400);
String fil="";
int i=0;
while(i!=low){
[Code]...
The program runs fine in netbeans project but once the jar is created it does not corporate with the text file. ("null" is returned) How can I attach text files to jar and exe?
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Mar 10, 2015
I need to transformation the txt files into xml files, but each row txt files don't have same elements, for example the first book is composite one author
<books>
<book>Title</book>
<price>price</price>
<author>Author</author>
</books>
but the second book is composite two author
<books>
<book>Title</book>
<price>price</price>
<author>Author</author>
<author>Author2</author>
</books>
I would have the xml files with the number of authors variables, I can use JAXB for my problem?or not?
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Sep 24, 2014
One of the requirements of my programming assignment is that a user enters a command along with two numbers. For example, if I entered the following command:
I 5 6
The program create an image like this (it wouldn't be outputted though):
00000
00000
00000
00000
00000
00000
It creates a 5 x 6 "image". This is where my troubles begin. The program should also accepts other commands, such as:
L 3 2 F
which would produce (also not outputted):
00000
00F00
00000
00000
00000
00000
Here is my method for creating an "image" with an M * N array
for (int i = 0; i < column; i++) {
for (int j = 0; j < row; j++) {
System.out.print("0");
} System.out.println();
}
The code works, but I need to store the image in an array so it can be changed by other methods (I can't create the image manually every time). I tried doing something like this but it doesn't work:
public static String[][] createImage(int row, int column) {
String[][] image = new String[row][column];
for (int i = 0; i < column; i++) {
for (int j = 0; j < row; j++) {
image[j][i] = "0";
} System.out.println();
} return image;
}
This method outputs as many blank lines as the columns I entered and the memory location of image.
So my question is: how would I store "0" in a 2D array so that it can be accessed and changed by other methods?Or, am I using a 2D array incorrectly and will the image have to be created manually every time? If so, how would I output image if it is created in a separate method?
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Aug 6, 2014
I am storing out of range values in int and byte type
public class OverflowDemo {
public static void main(String args[]) {
int value = 2147483647 + 10;
System.out.println(value);
byte b=127+10;
System.out.println(b);
}
}
Program will give error for only byte type as OverflowDemo.java:8: error: possible loss of precision
byte b=127+1; ^
required: byte
found: int
So why not for Integer?
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Apr 1, 2014
how can i store biginteger in an array?
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Oct 9, 2014
I trying to write a piece of code which takes a set of numbers or even data type and stores in an array (or something more suitable).
For example:
Date N1 N2 N3 N4 N5 Day
10/11/2012 10 09 32 100 15 Thursday
11/12/2013 01 0 0 23 50 51 Tuesday
I'd like to be able to sort them so that if I want to search for one of the entries, I can then create a function which allows me to sort them by date or even return all the numbers by a given date or day, etc....
However, I'd like to be able to set it up so that each set is "linked" meaning that again that I can search by date and it returns everything at that date.
I wanted to use an array but I don't know:
-How to do it?
-Whether this is a suitable approach?
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Dec 3, 2014
I have the following method that I need to implement:
{
// YOUR CODE HERE
File file = new File(filename);
int counter = 0;
String tempArtist, tempName;
Album tempAlbum;
Track tempTrack;
[code]....
Ok so I updated my code from the initial post since I made some progress on my own. I guess now I'm just stuck on how to scan in the file of strings and stock it into the type Track. (I've tried using both the initial linked list for this and a temporary variable with no luck).
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May 20, 2014
Write a complete Student class that allows you to use the statements such as the following in methods in outside classes, with the obvious meanings. Then write an application program that creates one student object, reads in test grades until a negative "grade" is seen (as a signal that the list of grades has ended), then prints out all available information about the Student:
Student bob = new Student ("Robert", "Newhart");
bob.storeGrade (23); // bob scored 23 on this test
return bob.getTotalGrades();; // total of test scores to date
return bob.getAverageGrade();; // for all test scores to date
return bob.getName();; // returns "Robert Newhart"
What I need is in the Student class... I'm not sure how to go about storing the grades without renewing the value of storeGrade (I'm sure what I have right now is incorrect, but I'm stuck). This is what I have so far, as you can see I left some of the grade-related bits blank for now, but all I want to know is how I can store the grades:
Java Code:
public class Student extends Object
{
private int itsTotalGrades;
private int itsAverageGrades;
private String itsFirstName;
private String itsLastName;
private int storeGrade;
public Student (String first, String last)
[Code] ....
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Jun 10, 2014
I am building an app, where I have to store the data eg: "hello ! how are you" in java as a string and then use scanner to get input and check if the entered word is present in the line stored. If it is stored then the entire sentence must be displayed. eg : if the stored string is "hello how are you"
if the entered string is "how", then the entire sentence "hello how are you" should be displayed.
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Oct 21, 2014
I'm trying to get data from a GUI input window into an ArrayList and back out via a JTable. I can get the array lists to print to the console within the input class, but I need to wire it to a data container and out through a different class. Here is code from one input class, and its corresponding output class:
Input:
public class AddClassroom extends JFrame implements java.awt.event.ActionListener {
// UI components
// are declared here...
[code]....
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Mar 31, 2014
How can I store a value in long type variable whose range is greater than int type variable ....
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Jul 22, 2014
I've sample code of jsp and servlets. Below is my code.
Index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="AnnotationServlet">
[code]....
Now I want to store those username and age(in .html) somewhere and I want those information in welcome.jsp. Now, I'm storing all those in session itself(In doGet method(servlet)).
2 Doubt) Also, when I get the session in servlet HttpSession session = request.getSession(); line No. 27. The session value is org. apache. catalina. session. StandardSessionFacade@69a8bf4f...I'm expecting that session is to be empty. Because, I dint store anything until that line.
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Jun 5, 2014
Any article where it mentions about when the class is loaded into memory?Does it happen before the server starts?
Also does the class needed to be loaded into memory? Can the JVM not just execute the code without storing in memory?
I searched in google. Could not get anything concrete.
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Mar 1, 2015
Java Code:
package inventory;
import java.util.ArrayList;
import java.util.Scanner;
import java.io.FileReader;
import java.io.FileNotFoundException;
public class Inventory
{
private static Scanner scan = new Scanner(System.in);
public static void main(String[] args) {
ArrayList<Product> InventoryList = new ArrayList<>();
Inventory I = new Inventory();
int option = 0;
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Jan 20, 2015
I am having trouble with getting a user input once they enter it in to a JTextArea and then storing it in to a string value. See, I wanted the user to enter an answer in to the JTextArea, and then once I store it in to a string value, I would be able to use it later. I wanted to after storing the variable to print it on to a JLabel, but nothing is showing up... Heres my code.
static String usera[]= new String [10];
for (int i=0; i< usera.length; i++) {
//These are the JTextArea names
usera[0]= Question1.getText();
usera[1]= Question2.getText();
[Code].....
I already initialized the JLabels earlier in my code, and I did not feel the need to post all my code here. This is where I am trying to get the string variable and then printing it out.
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