[java] Forum Topics

What are the major ways one can use to make a system robust for national use?! Thanks in advance.

am new in java and am rtying to code a program for lotto punters which generate as many numbers of 6 as the user request

Can someone recommend JAVA books specifically containing sections devoted to JAVA Sound API and general sound modifications?

Hi, i get an NullPointerException in this line:if (let==currentLink.aLetter) in search method. This is node class public class Letter { char aLetter; int points; Letter next; public Letter(char aLetter,int points) { this.aLetter=aLetter; this.points=points; } public Letter() { } public String printLink() { // System.out.print("{" + aLetter + ", " + …

Hi guys, i m new for ths java progrmming.Please me the diff between array and arraylist. Both are dynamically allocated values.any added mechansims in the arraylist. Please let me asap. Regards, Pradeep

There are many ways to read properties file in java. Here explained two wayS, using 1. ResourceBundle 2. Properties Class How to use this tutorial 1. Create one directory src and put both below files (MyProp.properties and ReadPropFile.java) 2. MyProp.properties name = Binod Kumar Suman roll = 110 city = …

My goal is to create a clone of minesweeper. I've created a custon component that extends the JButton class, for each of the minesweeper buttons. I've called this new class SweeperButton. the game board is going to be made in another class by creating a two deminsional array of SweeperButtons, …

Hey, iv been working on a fairly simple part of my program but it throws a null pointer exception. The error i recieve is : Exception in thread "main" java.lang.NullPointerException at FillStyle.<init>(FillStyle.java:12) at compiler.main(Builder.java:43 The code causing the error is : public FillStyle(int type) { if (type >= 0) { …

Main.java [CODE] package scrabble; import javax.swing.JOptionPane; import javax.swing.JDialog; public class Main { public static boolean isDoubloon (String word) { int count[] = LetterHist.letterHist (word); for (int i = 0; i < count.length; i++) if (count[i] == 2 || count[i] == 0) continue; else return false; return true; } public static …

Hello, I have my database application containing all the customer information. The application is linked to my SQL using jdbc driver. I would like to know if it is possible to send email automatically every months(like a newsletter) with netbeans? If yes, how can I do it? Thank you.

I have been trying to setup swt in eclipse Juno, but it keeps on giving me errors. Here is the error list: Exception in thread "main" java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons: no swt-win32-4233 in java.library.path no swt-win32 in java.library.path Can't load library: C:\Users\DeoFamily\.swt\lib\win32\x86_64\swt-win32-4233.dll Can't load library: C:\Users\DeoFamily\.swt\lib\win32\x86_64\swt-win32.dll at …

hi guys, i need help on algorithm to combine letters from a word. for example, i have this word: 'ABCD' . then i want to combine 3 letters from that word. so it comes to these combination: 1- ABC 2- ABD 3- ACD 4- BCD how is the algorithm in …

Hi everyone, This October I will start university study (Open University in UK). I’m 35 and work full time (non-scientific, non-IT background). I plan to study to become a software developer in Java (that’s the language the Uni uses; they also have one course in VB.net) I’m not convinced yet …

hi guide me, how to set enviroinment variable setting and path settings for jdbc and servlets. "I want to compile jdbc, servlet programmes from command line" i am using windows vista.

Please people i was given a project in school to write an application that can serve as a reminder in Java ... is there any one that can help me out on this???? please i need help

here i've created the first applet but it is not working, [CODE] import java.applet.Applet; import java.awt.*; public class FirstApplet extends Applet { public void paint(Graphics g) { g.drawString("Look at me, I'm a Java Applet!",10,50); } } [/CODE] i am getting no errors but when i am opening the html file …

I read that every class extends a object class by default. then it should cause multiple inheritence and must not be supported by Java. Please help me about this....

Hi all, i want to wite an method that can take a String and return boolean , it should return True if the first character of string is an uppercase . Can not using String Apis ? so how can i do ? thank !

hi, I am very naive to java. my project is in data mining where i have to implement k means clustering. the task is like this 1.reads a csv file and stores the attributes in a matrix format 2.clusters the matrix data depending on the euclidean distance measure. 3. the …

Hi, I am developing a website that allows users to be able to navigate the website by only clicking on a soft switch. All links are rotated through an array when a link is highlighted and the user clicks the link it is selected. I need to be able to …

import java.util.Arrays; public class binary_search { public static void main(String[] args) { int ar1[] = new int[128]; int p, key=78; p=Arrays.binarySearch(ar1, key); System.out.println("element found at index "+p); Arrays.sort(ar1); p=Arrays.binarySearch(ar1, key); long start = System.currentTimeMillis(); Long elapsed = System.currentTimeMillis() - start System.out.println("Time to do stuff (in milliseconds): " + elapsed ); …

I have a JTextArea that I need to be able to print off from the printer. This is the kid of text that is in the JTextArea GLEN ROGERS 47 PINE AVENUE, CARRICKFERGUS, BT38 8EE, 07824771114 733KIA 2012/07/03 DEVICE; OTHER - GIVE MAKE AND MODEL PACKARD BELL EASYNOTE TN? WINDOWS …

I need to open two pdf files as popup window on click ona button in asp.net C#,but now its opening only the first popup?Can anybody help me ,to open the both windows at the same time? This is my code: string PDFPath = folderpath + filename; string PopupName = "popUp"; …

In PHP using isset() function for checking the form value is set or not? Like wise which methed is used in java? Any one can help ASAP..?

Hi all I would like to embed an encoded image into an FXML (i need this in that I'm coding a converter between svg and fxml). I tried with this: <AnchorPane id="AnchorPane" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml"> <children> <ImageView fitHeight="150.0" fitWidth="200.0" layoutX="153.0" layoutY="94.0" pickOnBounds="true" preserveRatio="true"> <image> <Image url="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYEAYAAACw5+G7AAAABmJLR0T///////8JWPfcAAAA …

i use <c:forEach like this <% ArrayList<Categorie> categories = new CategorieDao().getAll(); request.setAttribute("categories", categories); %> <c:forEach items="${categories}" var="categorie"> <a href="film.jsp?id=${categorie.id}> ${categorie.ad}</a> </c:forEach> but how can i use this categorie's attribute in java tag like this <cc <c:forEach items="${categories}" var="categorie"> <a href="film.jsp?id=${categorie.id}> ${categorie.ad}</a> <% int count= new CategorieDao.getSome(***categorie.id***); %> </c:forEach>

hi guys, i was wondering if someone can point me in the right direction of how to create an interface with a playstation usb controller for a game that i have in java. thanks

On my class side I cannot seem to get netPay to calculate and am also having problems with finding insDeduct. On the demo side I have you choose between S - Single and M - Married. Any help would be greatly appreciated. [CODE]public class ChapterFiveClass { // Declare some fields …

Can someone point me in the right direction for formatting text and aligninng text in a JTextField? Thanks...

Hi everybody! I am having some trouble running a detached process using CreateProcess function in C++. I have been using the following function to spawn processes in c++ for years now havnig no trouble. I have used it with console applications, mfc apps, dialog based ... etc : StartProc(char *callprogram, …