32,204 Topics
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| | So i'm in ap computer science right now and ArrayList are confusing the **** out of me. We're working on a program in which we have to create a method that adds an "ap exam class" to an ArrayList heres what it looks like: private ArrayList<APExam> myExams; myExams = new … |
 | can anyone help me to put a countdown timer in a dialog box. i want to prompt the user when the time expires. tnx! |
| | Hi, I want to know how do i write the grammer for the program below in JavaCC. app(name : 'First App') { View(id: top) { Label(id: l1, text: 'Hello') Button(id: b1, text: 'Press') Button(id: b2, text: 'Exit') } } appreciate a reply thanks |
| | How to retrieve all tables from database dynamically using servlets and jsp...please help me  |
| | What's a good software development methodology to follow for a project where you initially know nothing. So an experimental project where you will need to seek out APIs and so on as you carry out research and figure out what needs to be created. I'm required to follow a design …  |
| | So what I'm trying to do is pass the values of one class to the other. So with the code i have i believe what is happening is im not passing the values. But im passing the referenced location. import java.util.Arrays; public class numbers { int[][] x = {{6,10,14,31,32},{12,23,12,11,22}}; public … |
 | My main idea is to find an algorithm ( Java ) that takes the random letters which someone has typed in a JoptionPane for instance and then instantly by pressing "Find words" i would like the program to derive all those words that match my letters from a dictionary stored … |
| | A blue passenger train moves southwards at a speed of 120km/hr. Unfortunately as it enters a junction it collides with a brown goods train moving northwards. The collision happened 50 minutes after the goods train takes off. Using a Java program illustrate the answer. |
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 | I am working on a Google Map api3, I am adding points on the map and save it to my database this part is working fine now in the end of adding the map and click on save and close I need to redirect to another page which will tell … |
| | Out of my depth a little :-) How do I create a pair of longitude and latitudes to create a polygon showing a 2 mile radius of a particular longitude and latitude? in Java Android. I know how to find your current longitude and latitude but I just can't figure …  |
| | Hi guys I need some help pls. Can somebody help me a jsp login code. The code should select username,password and userlevel fields from a database(say employee). If both username and password are correct, it should check the userlevel. If the user level is "admin", should load the admin home … |
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 | 1 00:00:01,600 --> 00:00:04,080 54545<b>Mr Magnussen, please statss434e your full name for the record.</b>65565 i tried this it work if the number are there but if there is no number it set the beginning 0 so i need the fourm to read a number between string if it was at … |
| | am trying to read file in java but i have an issue bufferReader are stating from number 2 `public static String lineLengths() { try { String file = "C:\\\\Users\\\\isslam\\\\Documents\\\\NetBeansProjects\\\\AnimeAid\\\\tra.srt"; BufferedReader br = null; try { br = new BufferedReader(new FileReader(file)); } catch (FileNotFoundException e) { System.out.println(e); } String line; while((line … |
 | So I have a button which adds a "Miner" then removes the cost of the Miner. The problem is that it is taking away too much, double the cost, and also will not buy if the current gold is equal to the cost. I have no idea why it is … |
| | i want print the iframe contents using javascript can u help me |
| | I'm trying to use html onclick in java servlets like this; ShoppingCart cart = new ShoppingCart(); out.println(" <h1><button type=\"button\" onclick=\"cart.addBook(b.getIsbn())\">add</button> </h1>"); addBook is a method in ShoppingCart class, and I'm calling it when the button is clicked, but it's not getting called. Please help.  |
| | Blob b=rs.getBlob(12); bytes[] imagebytes=new bytes[(int)b.length()]; Image image; image=getToolkit().createImage(imagebytes); ImageIcon icon =new ImageIcon(image); jLabel22.setIcon(icon); This will not work. help me to display the image |
| | Hi, am so new to java programming and I need help to create an address book. Am using this project to test my self.(http://sis.ashesi.edu.gh/courseware/cms/mod/resource/view.php?id=218). Please this is my writen code but I need help to add, edit, delete, and the rest of the functions. Or better if someone can guide … |
| | Could someone give me a few reasons why an Application isn't terminating on close? `*THIS IS FOR A JavaFX APPLICATION*` |
| | I am having some difficulty, any advice would be gladly appreciated. Thanks in advance. [B]Write a program that reads the following information and prints a payroll statement:[/B] [B]Employee's name[/B] [B]Number of hours worked in a week[/B] [B]Hourly pay rate[/B] [B]Federal tax withholding rate[/B] [B]State tax withholding rate[/B] [B]Enter employee's name: … |
 | I am working on Image Viewer How do I work on the Action button to display images one after the other with Next and Previous |
| | This is how i try to run my JDK via cmd but i always get en error: ______________________________________________________ Microsoft Windows XP [Version 5.1.2600] © Copyright 1985-2001 Microsoft Corp. C:\Documents and Settings\Elliona>cd desktop C:\Documents and Settings\Elliona\Desktop>cd kirby C:\Documents and Settings\Elliona\Desktop\kirby>path C:\java\bin C:\Documents and Settings\Elliona\Desktop\kirby>javac payroll.java C:\Documents and Settings\Elliona\Desktop\kirby>java payroll.java Exception in … |
| | This is PART of my GoldMiner class where the problem is occuring. I am getting a null pointer. I assume it is because of the way I declared my sceneController class. private static Game game; private static sceneController controller; public static void main(String[] args) { Application.launch(GoldMiner.class, (java.lang.String[])null); game = new … |
| | Hi, i am new to groovy language. I was wondering if there will be anyone who will be able to help me understand the below code. static analyzeAPI(pkgname) { def refs = Yaml.load(new File(output_base + "/${pkgname}_PackageRefs.yml").text) refs.Classes.each { analyzeClassRef(pkgname, it.name) } } static analyzeClassRef(pkgname, name) { println "=== Analyze class … |
| | Node inside a linkedlist SomeInterface has an addLast() method that should add a node at the end of the list public LinkedList<T> implements SomeInterface<T>{protected class Node<T>{ privateT data; private Node<T> head,tail; protected Node(T data,Node<T>tail){ this.data=data;head=null;this.tail=tail;} private T getInfo(){return this.data;} private void setTail(Node<T>newTail){this.tail=newTail;} private void setLink(Node<T>newHead){this.head=newHead;} private Node<T> getLink(){return tail;} }} … |
| | I need a code that reads in a text file into an object Computers and sorts the specific indexes in descending order, as you can see the first one vendors is already sorted so you just need to print that one. Then in my case 2 I need to print … |
| | Hi, I have a parser in .madl language in a txt format and I want to implement the code completion in java in eclipse plugin project. Fro ex: code completion is in a java editor if you press Ctrl+space a popuo window appears with relating option that are available, I … |
| | Hi, I am implement a plugin project in eclipse in java language. I have a parse which is in s simple txt file. Below is the txt for the parser. id=app1 [String] #type=app [String] mainView=top name=First App [String] children: size=1 === child[0] === class=View id=top [String] #type=View [String] #line=8 [Integer] … |
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