36,051 Topics
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| | HI!!!! i am a student of B.Tech 3rd year plz suggest me a mini project in java i have basic knowledge of swing and jdbc and elementary idea of networking  |
| | hi guys, i'm really having a trouble with my conversion code... it says the NumberFormatException with this "Student[] studs = new Student[Integer.parseInt(fr.nextLine())];" but i have no idea why. can someone help me? import java.util.Scanner; import java.io.*; public class SampleFileProcessing implements Serializable{ private static Scanner fr; public static void main(String[] args) … |
 | Hello! I am looking into game development, and recently discovered that most cube based games (with procedural generation) are coded in java, and i was wondering why that is! |
| | We have socket application which sends out quite a number of email out. So we decided to send huge number message into it which will trigger emails. Eventually we see the email are taking hours before it reach any of the inboxes either gmail,hotmail or yahoo etc. We have this … |
| | HI, I WANT TO PRINT THE ASCII OF THE FOLLOWING TEXT ÇÑÔÏ ÇäæÑ ÇÈÑÇåíã BUT ALL I GET IS 63 63 63 63 32 63 63 63 63 63 63 63 63 63 ?????????????? I WILL BE GREATFUL FOR ANY HELP THANKS IN ADVANCE |
| | I am trying to create android project in eclipse, for some reason it doesnt create gen > R.java file. I did clean project and doesnt work. any ideas?  |
| | Hello When i am trying to build the apache-james-2.3.2 i have this problem Buildfile: build.xml /Users/xxmp/Desktop/James%20Project/apache-james-2.3.2/check-targets.ent could not be found setup-dependencies: javamail-check: activation-check: check-dependencies: prepare-common: Preparing code prepare-phoenix: Phoenix distribution present - adjusting linefeeds and permissions, copying files prepare-mxinfo: Writing Info descriptors as legacy xml. prepare-metainf: prepare: compile-main: Compiling James … |
 | public class naming { private String name ; private String address ; private int idCard ; private int firstMoney; public naming() { name=""; address=""; idCard=0; firstMoney=0; } public naming(String n , String ad ,int id , int fm ) { name=n; address=ad; idCard=id; firstMoney=fm; } public String getName() { return … |
| | I have a Java code block like following: public TcpConnection(TcpSocket socket, long alive_time, ITcpConnectionListener listener) { init(socket,alive_time,listener); start(); } For the conversion in C#, When I try to replace the `start()` method with `System.Threading.ThreadStart()`, it gives an error. How can I start a thread in C#?  |
| | Training data: f(1)=0.1 f(2)=0.2 f(3)=0.3 Test data: f(9)=0.9 f(10)=1.0 f(11)=1.1 can you please tell me how the data will look like in training data file and test file? |
 | I am creating a game of Racing cars in java But the problem is that my car when moved in any direction makes flickering on the screen. As the project is a Core java project it can only be made in a Windows application form. I set the speed of … |
| | How to forward data to jsp from Servlet multiple times using request dispatcher. I have tried with timer in servlet with request dispatcher to forward updated data from databases to jsp page to display result. i laso tried with page refreshing with single jsp page |
 | Hi DW I created a program in NaviCoder For Java and now I want to export it so that it can be a exe file so that it can be executed on a computer on it own without the need of an IDE. Thanks |
| | public class PolarCoordinates { public static void main(String[] args){ int r=10; double x=0,y=0,theta=30; x=r*Math.cos(theta); y=r*Math.sin(theta); System.out.println("The value of x is :" +x); System.out.println("The value of y is :" +y); } } help please? it gives me wrong answer. 10cos(30) should equal to 8.7, but it gives me 11.7 ans. 10sin(30) … |
| | Hi Dw I'm creating an atm appication and now my research pointed me to use the Java Point Of Service/Sale (JPOS) my application allow user to choose the amount from the options displayed on the screen and the user will use the number keypad to make his/her selection and the … |
| | Hi all, I have created an abstract class Named Employee and one Sub-Class named FullTimeEmployee. In my abstract class "Employee", i have defined two constructors one without parameter and one with two parameter, both used to intializee first name and last name. My aim is to print payroll for employee … |
 | Hi All, I have created an application that allows a user to select a diectory, where we parse the photos, and upload to a database. The issue that I am having is that I have a button on the form found in the newJFrame.java class called upload that when pressed … |
| | I know this is going to be really simple, and I'm going to look like a fool when someone answers it, but... I'm tryingto replace any occurrenxe of any of these characters - ?_ with a * in a String I start with replaceAll("[ _-]", "*"); and all is well … |
 | doing this works : contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new BorderLayout(0, 0)); textArea = new JTextArea(); scrollPane = new JScrollPane(textArea); contentPane.add(scrollPane,BorderLayout.CENTER); setContentPane(contentPane); however this doesnt : contentPane = new JPanel(); textArea = new JTextArea(); scrollPane = new JScrollPane(textArea); contentPane.add(scrollPane,BorderLayout.CENTER); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new BorderLayout(0, … |
| | i would like to know the connection between socket and webservice,ws replace sockets?or can i embed cocket programing in ws?  |
| | PLEASE.... I NEED A TOPIC TO DO A PROJECT WORK IN NETWORKING BASED ON .NET OR JAVA.....PLEASE HELP ME OUT SOON |
| | hi all, i have a java program that store arabic data in ms access to let the arabic writing apper i should change the uni code of the operating system but when i give it to my friends to insert data on thier laptop but they forget to change the … |
 | Sorry if this is the wrong place or something, but I saw a question in here on PHP vs ASP.NET, which made me think it might be. On the other hand, I also saw posts asking about people's breakfast, so I don't really know... Users are already starting to embrace …  |
 | I am trying to figure out how to print these number patterns. pattern 1 6 56 456 3456 23456 123456 pattern 2 1 212 32123 4321234 543212345 65432123456 |
| | I've tried installing the jackcess libaray (http://sourceforge.net/projects/jackcess/files/) into my project using Project/Preferences/install jar. However, when I try import static com.healthmarketscience.jackcess.Database.*; it just says 'Incorrect package'. How do you install this type of libarary? (I'm a real nooob so sorry if this is obvious). Also - why so many programmers so … |
| | I'm currently working in a java to c# conversion project. In one part I got this Java code snippet. public CustomType someMethod(Message msg) throws IOException { byte[] data = msg.toString().getBytes(); } to my understanding, data contains the byte representation of the string *msg.toString()* But when I try to write it … |
| | public static void main(String[] args){ /*The number of bacteria, B, in a culture that’s subject to refrigeration can be approximated by this formula: B=300000*e^-0.032t Using this formula, write a program that prompts the user for a value of time, calculates the number of bacteria in the culture, and displays the … |
| | import java.util.Scanner; public static void main (String [] args) { Scanner p = new Scanner(System.in); String w; System.out.print("Enter something :"); w = p.next(); String[] m = w.split("\\s+"); for (int i=0; i<m.length;i++){ System.out.println(m[i]); } } } if i input: a s d the output is: a only |
| | Hello everyone..i'm trying to use spring to develop a website..but I am stuck with this snippet..what is the difference between @RequestMapping(value="/addBook",method=RequestMethod.GET) public ModelAndView Login() { ModelAndView model=new ModelAndView("addBook"); return model; } and this @RequestMapping(value="/addBook",method=RequestMethod.GET) public String Login() { return "addBook" } I'm really confused with this..don't both of them do … |
 | Hi.. I want to seek help about database in SQL and Jtable in Netbeans. In our sales inventory system, we have these tables in database namely 'stockmasterlist' and 'pricemasterlist'. They are relational since they have in common with regards to their 'ProductNumber'. Now, since they are of different tables but … |
| | Firstly, I am a beginner in Java, and I have never been into any programming before, so it seems like I need a little help to solve a task. The task is "I've a text file with the size of more than 5 MB, & I need to clear the … |
| | i'm newbie ,i just started learning the basics of java. how much time-give or take- would it take to have working knowledge of java? how much ican learn on my own studying 4h a day? |
 | Hi, Guys! Actually I want to ask about servlet and ajax. Sorry if I post in wrong room, I have search the room that suitable for my question, but the most suitable is here. I'm developing a push notification for web using servlet + ajax. I have done an tutorial … |
 | Hi! Im new to Java and iv been studying GUI's in it. Just started with swing and tried to make this giu for a calcularot. but it doesnt execute and gives me "java.lang.NoClassDefFoundError" error. im a total noob so i cant figure it out. i'd really appreciate it someone could … |
| | Introduction of iText Itext is often a library that permits you to create and manipulate PDF documents. It enables developers seeking to enhance web- and also other applications with dynamic PDF document generation and/or manipulation. javaaster.com |
 | public void cosUpdate(String sr,String name,String fname,String adress,String phone,String refernce,String tailor) { try{ String QUERY1 = "UPDATE Info1 SET FatherName = '"+fname+"' WHERE Sr = '"+sr+"'"; JOptionPane.showMessageDialog(null,QUERY1); Class.forName(JDBC_DRIVER); connection=DriverManager.getConnection(DATABASE_URL); statement=connection.createStatement(); result =statement.executeUpdate(QUERY1); if(result >0) JOptionPane.showMessageDialog(null,"Successfull"); else JOptionPane.showMessageDialog(null,"UnSuccessfull"); } catch(Exception ex) { JOptionPane.showMessageDialog(null,"Error in cosUpdate() Method","Error",JOptionPane.ERROR_MESSAGE); } finally{ try{ resultset.close(); statement.close(); connection.close(); …  |
| | I have been seeing alot of adverts on c sharp on xamarin. Please for does of you who are experienced on c sharp on xamarin. Can it do every thing that android on xamarin would do. |
| | Hello All, I have an open source maven java project. I downloaded it to Eclipse using Git. when I made "maven install" to this open source, it is converted into 4 other projects, where each project has a war archive. I tried to test these projects by adding thier war … |
| | Hello All, I have an open source java project in Eclipse & have a folder contains the javadoc of this project & I need to associate the java doc to this project. can any one tell me how I do this? |
| | Hello, I am storing an image in the database. I would like to know how can I resize the image before actually saving the image. I have a form with a label, a button and a text field to store the image path.Here is my code public void SaveImage() { … |
| | Hi, I'm looking for an java api which can convert .doc file into .pdf file... i need this solution to work without any intervention of MS Office/Windows. If anyone have any idea about such api , please reply. Thanks ahead Daniel |
 | the jsp cmlode and html <script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.js"></script>This must be paste in head <a href="#" id="toggle-example2" class="button"></a> <div class="example2"> <p>Una novità nei prodotti speciali! La nostra IP Plus aumenta il numero di ottano, passando da 98 a 100 e dando così vita ad un nuovo prodotto altamente performante: plus 100. … |
| | I can't figure out why I'm getting this error, i've checked all the posts I can find here and they are all a method inside another method, which i'm pretty sure I don't have. This is the error message it gave me: Exception in thread "main" java.lang.RuntimeException: Uncompilable source code … |
| | What can I use to write application for Windows Mobile 6.1 and 6.5? Application was written before (not by me) using VB.Net 2008, but I really would like to move away from it to plain C/C++ or possibly Java. Where can I start and what are my options? I don't … |
| | I have a JSP with a button. This button is disabled. How can I make the JSP keep on reloading until isCheck becomes true and it will make the button enabled? Here is my javascript: var usbAvailable = <%=CheckUSB.getInstance().getStatus()%>; function confirmSound(){ HyPAS.Sound.confirm(); HyPAS.LED.on(); location.href='ScanJobServlet' } function checkUSB(){ <%response.setHeader("Cache-Control","no-cache");%> if(usbAvailable==false) { …  |
 | I would love if someone had a few minutes to help me in my programming, I usually am alone doing this trying to learn and all, which entails a bunch of guess and checking with no real pin point of where I went wrong. http://pastebin.com/pE0giYq1 This is a script/program done …  |
| | Just curious to know if we can download youtube videos using downloader using HTTpClient? import java.io.*; import java.net.*; public class trial { public static void main(String[] args){ setAndAuthenticateProxy(); try { URL url = new URL("http://www.youtube.com/watch?v=tQC7rO8cjLs"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); InputStream in = connection.getInputStream(); FileOutputStream out = new FileOutputStream("C://Temp/fo.flv"); … |
| | Hello Everybody Its has been a very long time since I started some programming project for my own curiosity. And now that curiosity has reached a level of desparation. I want to make a talking program. You know like Text-to-Speech. I searched google, but all I found was theory. I … |
| | ok i was working on simon says app...here is the codes ...something is giving me nullpointerexception...i have trying to think for hours and cant seem to find anything to correct on...please help Here is the Main.java package com.gagan.simonsaysreplica; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; … |
 | You are interested in keeping track of the team members and competition infor- mation for your school’s annual entries in computer science programming com- petitions. Each team consists of exactly four team members. Every year your team competes in two competitions. As an initial start for your database, create a … |
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