32,204 Topics
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| | [CODE] @ManyToMany (fetch=FetchType.LAZY) @JoinTable( name="confirmed_join_table", joinColumns={@JoinColumn(name="user_id")}, inverseJoinColumns={@JoinColumn(name="match_id")} ) @IndexColumn(name="position") private List<Match> confirmedMatches = null; @ManyToMany (fetch=FetchType.LAZY) @JoinTable ( name="candidates_join_table", joinColumns={@JoinColumn(name="user_id")}, inverseJoinColumns={@JoinColumn(name="match_id")} ) @IndexColumn(name="position") private List<Match> candidateMatches = null; [/CODE] This is what I have in one of the classes, the other class has the inverse association, but I don´t think … |
| | I'm having trouble with this code. I'm sure it's something stupid (I'm in a class for Java) so please forgive this Java Newbie. [code] package Student; import Entity.*; import ExceptionManagement.StudentException; import java.util.ArrayList; import java.util.List; import javax.swing.*; public class DataManagerBean implements DataManager { ArrayList<Student> students = new ArrayList<Student>(); ArrayList<Course> courses = … |
| | Hi All, I could really use some help in sorting vectors, i know the collections.sort(x) method will sort a vector of numbers etc however i have a vector full of objects and i need to sort them; the object contains details of a website please find the fields below; [CODE] … |
| | Hi guys~! Consider the following code: [CODE=Java] public void reset(int[] arr) { for (int i=0;i<arr.length;i++) { arr[i]=0; } } [/CODE] I know that regardless of what the actual array is before this method is called it will not change afterward because the method cannot modify it since it is not … |
| | [code] //to check if numeric public boolean checkNumeric(String user_input) { for( ; x <= user_input.length() ; x++ ) { if(!Char.isDigit(user_input.charAt(x))) { return flag; } } return noError; }[/code] it says: cannot find symbol variable- char Help please. |
| | I am designing a bank system Soon as the user opens the display the welcome message alone with all the latest offers are displayed without any input. afterwards the user is given 4 set of instructions for example: enter 1, 2, 3 or 4 to display the 1. Display balance … |
| | Hi experts, I have a question on generating a hashtable which contains only unique numbers. Can anyone help me out. My code is here. I want to check if the key and value are in the hashtable or not. if they are in the hashtable i break to start generate …  |
| | [B]So basically, my JMenuBar has to appear everywhere in my applet (I have CardLayout, 3 cards/screens), in every screen and in the same location (looks nice, consistency). How would I go about doing this?[/B] So, I was making a menu for my applet. I followed the exact instructions at: [url]http://java.sun.com/docs/books/tutorial/uiswing/components/menu.html[/url] … |
| | Hi.. I am trying to connect to my database (MySQL) within a JSP page. The is compiling without any error, but still I am not getting any output. Can anybody help?? The code is as follows: [CODE] <%@page contentType="text/html" pageEncoding="windows-1252"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head><title>Enter … |
| | This is what I need help with: "Write an application to simulate the rolling of two standard six-sided dice. The application should use an object from the class Random to roll the first die and then again to roll the second. Each die can have the values of 1 to …  |
| | This is my assignment Starting with last week's Property project, build an array of Properties in your main(). Add static methods to the Property class: void ArraySort(Property[] property_list, String key_field) This will sort the array, property_list, based on the argument, key_field, passed in. These are the legal choices for key_field: … |
| | Ok so I'm doing some practice questions, and this one is trippin me up a bit. I need to create an array that stores data 0.0, 0.1, 0.2, 0.3, all the way to 20.0. Then I have to compute the sums of the elements that are not integers (i.e 0.0, … |
| | how can i make my java application dynamic so that if any user rename the folder- Download,Music,Documents of Filesystem automatically reflects changes to my application  |
| | i want my java application to access windows drive and pen drive. how can i mount drives in linux root using java. so that it will be easy to access files #mount -U34D5-FCF7 /mnt/c: is a linux commnad i want this to be executed by my java application |
| | Any suggestions / code examples for Encryption/Decryption of files(any file format) in java. command line args - |
| | Hi. I am coding a game for my basic Java programming course, and I am currently coding a game (Othello, aka Reversi). I am having issues with the JButton size. [CODE]public void game () { resize (800, 680); game = new Panel (); Panel board = new Panel (new GridLayout … |
| | I want to put everything into one applet. How do I do that? Please HELP :( [CODE] import java.applet.Applet; import java.awt.*; import javax.swing.JOptionPane; public class HelloWorld extends Applet { public void paint (Graphics g) { g.drawString ("Name" , 50, 25); String first; first = JOptionPane.showInputDialog (null, "Enter first number: "); … |
| | [B]How would I implement two listeners?[/B] I need to implement ActionListener and [URL="http://java.sun.com/docs/books/tutorial/uiswing/events/mouselistener.html"]MouseListener[/URL]: I have the [CODE]public class Othello extends Applet implements ActionListener[/CODE] which is just below my libraries. But I also want to be able to use the MouseListener. So, I'm having trouble implementing both listeners. I tried: [CODE] … |
| | Hey guys. I wanted to know if someone can tell me what's wrong with my code. I got it to work, to a point. It shows all the months, however, when a user inputs the month/number it ends. Which it needs to playback the month... Example: 2 = March Here's … |
| | Hi there, I am making (more like, have already made) an IRC bot in Java. I would like to be able to query a shoutcast server with my bot and return basic information (such as now playing, bitrate, etc). I have scoured google and only found php code which i … |
| | I got an assignment, and this are the instructions: "Design and implement a Nim class and a NimGame application to allow two human players to play the game of Nim. The game starts with three piles of stones. The first pile has 3 stones, the second pile has 5 stones, … |
| | I have to write a JUnit test method for a short program that lets the user add/remove/browse images in a collection. (Adding an image is done with a JFileChooser) The test method that I wrote exhibits some really bizarre behavior; it passes every so often, but fails most of the … |
| | Hi, I'm trying to develop a linkchecker, the HTML text I'm using it on though has a few lines such as this: [CODE] <li><a href="PhD/refs.html"> <b> References </b> </a> section of PhD <li><a href="WWM/refs.html"> <b> References </b> </a> section of WWM proposal[/CODE] which aren't being picked up by my linkchecker. … |
| | I am having a couple of problems with my code. First, whenever I try to remove the JOptionPane from line 79 in my code, I get a NullPointerException from the line this.dbGraphics = this.dbImage.getGraphics(); a couple of lines down from the JOptionPane. Does anyone know why? Another problems is that … |
| | Hey. I need a method that creates a matrix from an array, for instance: ({10, 11, 12, 13}, 2) should return {{10, 11, 12}, {13}}. [code]public class Matrix{ public static int[][]toM(int[] array, int a){ int[][]matrix = new int [(array.length)/a][a]; for (int i = 0; i < array.length; i++){ int value … |
| | I have to make an audio player in java applet so that it can be used on websites. It will browse files on the computer, make its playlist and will play them one by one. I have compiled the .jar file and done everything correctly in the <applet> tag in … |
| | i have no idea to return multiple statement. [code] public double[] compute(double[] times) { double[] t = this.Portion(times); double aa = this.computeTime(180-19.5,t[0]); double bb = this.computeMidDay(t[1]); double cc= this.computeAs(1 + asrJuristic, t[2]); double dd = this.computeTime(0, t[3]); }[/code] how to return all double " aa, bb, cc, dd" in this … |
| | hi i download eclipse 3.5.1 how can i install tools for j2me programming on it ??? thanks |
| | I'm doing my first year project at uni and have hit a stumbling block. I have to make a basic version of a media player that will allow a user to add tracks that are stored in a MS Access database to a playlist, and give them a rating. My … |
| | I've been having problems with my form program while trying to call data entered into a text field and displaying in a GUI after pressing a button. Here's my code. [CODE]import java.awt.*; import java.awt.event.*; public class ProjectForm { public static void main(String[] args) { Frame frm=new Frame("Personal Information Form"); frm.setSize(350,200); … |
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