35,619 Topics
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| | Hello everybody, I am new to Java, I am creating a simple application that will insert into my database, but what I really want is, I have a class called product which contains the jTextfields of the product description and product qty and a button called test, and I also … |
| | This is what I need my program to do: 1. Ask the user to enter the number of points. 2. Ask the user to enter x and y positions for each point. Store the positions in a 2-D array. What should the dimensions of the 2-D array be? 3. Compute … |
| | Allo. I am finishing up my coding project and I am going nuts trying to figure out what I'm doing wrong. I thought I finished my ISBN checker code properly, but when I finish imputing the ISBN number that is valid, I get "The ISBN number is valid", but I …  |
| | Dear All, I want to develop a network application in java based on HTTP.. In which one server and other is client application..... The problem is that, How can I check whether a server ip address is valid or not ? Please tell me... I am very thankful to you.... …  |
| | [B]I have a timer class that prints out a string every 5 ticks, and on the 6th tick it runs a random event. now what i want is to have the timer to restart from 9 ticks. As i tried to do with the else statement in the MyTask Class … |
| | Hello I added a jpanel form on top of my game. I would like to implement a timer. How can I do that? I already imported the timer in the class but I don't know how to proceed. |
| | I have a homework. My teacher requires me to do a project which use Link base binary tree. I do almost all needed function but still remain print method. It throws StackOverFlow every time I complile project. I know since the print method but, I have a base case to … |
| | I have a Product class that is the parent of 3 other classes; Books, Movies, Music. And the Product class connects to the Store class that holds the Store's location. If I need to find a certain Product I have to traverse the list of each the Store class and … |
| | I cant digest the problem, please help me a bit. [code]You will develop three Java classes that interact with each other: Cashier, PriceAndStockManager and Product. Cashier objects are in charge of front-office operations, particularly purchases. These cashiers use a PriceAndStockManager object in charge of back office operations. This object provides … |
| | Hey, I have a task to do a program that can transfer Latin word to Morse and I need to read the connection between the letters from a txt file and save both of them to differnet lists (soned and morse) and later return an ArrayList that contains them both. … |
| | Here is my assignment: > Here is your assignment: You work for a Landscape architect. They have asked you to be a part of their team as they need a computer programmer, analyst, and designer to aid them in calculating engineering specification. Specifically, you have been assigned to the Pools, … |
| | Hello everyone, I am having an issue with my code, null pointer exception error. It says lines 24 and 75 are the issue, but I am not exactly sure what the problem is. Can anyone help with some suggestions as to what I might be doing wrong ? Much appreciated. …  |
| | I'm just wondering whether using socket is the only way to build communication mechanism of a p2p system? Thank you in advance. |
| | Hello, I am creating a game, where I have 4 classes. The Game(main class), the player, level1 and level2. I have created an object(key) on the level1 class. Now I want the key to disapear when the player touches it. I have implemented the collision listener on my level1 class … |
| | Finally getting into concurrent programming but it's not easy for the novice like me, after all this work I still cannot get a successful compilation!!! A simple roundabout (traffic circle) is a circular junction of four streets where traffic flows in a one-way and one-lane circular stream around a central … |
 | Hi, I have developed a web application using NetBeans and GlassFish v3. Now I want to change to Apache Tomcat, beacause of the unavalabilty of free GlassFish web hosting. So, my question is that, can I change my fully built web application to Apache Tomcat from GlassFish and [B]If yes … |
| | Hi, I'm trying to make a menu and when you click on one of the JButtons, it'll go from my first class's GUI to my second class's GUI. But when I run the program, and I press the button algorithm, it changes to a blank screen, and not to the … |
| | Hi everybody! Help me plz to figure out obe little thing. so imagine little window with 4 buttons and a JLable. I want to ask how to add JLable to the panel and not give it a Grid Layout. I mean that I want my JLable be under 4 buttons. … |
| | can we return 7 elements of an int array using return statement. if not, please help? |
| | hello, can anyone tell me how to convert int array to string? |
| | Hello! How can i capture a screenshot of desktop with mouse? I can get a screenshot with robot.createScreenCapture but it does not show me also the cursor (mouse) ... Thank you! |
| | *None of the buttons except create and clear work can someone help please , can anyone help me with the parts i have missing , the account and date test class work fine i just need the bank account GUI to work properly , here is a detailed explanation of …  |
| | I need help on drawing numbers on top of a rectangle matrix, and have them move together with the rectangle they are on. I tried doing this [code]public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2 = (Graphics2D) g; for(int row = 0; row < tiles.length; row++) { for(int col = … |
| | *Edit* Just so you know, we are on the chapter in the book introducing ArrayLists *Edit* I am having trouble with this problem. The problem is stated: Implement a class Polygon that contains an array list of Point2D.Double objects. Support methods public void add(Point2D.Double aPoint) public void draw(Graphics2D g2) Draw … |
| | hellow every one im facing problem in my coad wich i tried to understand what is the mistake of my symantic but no progress..... this is the code [CODE] private static void NNA(ArrayList<triple> Graph,String GoalN) { ArrayList<triple> vp= new ArrayList<triple>(100); int index=0;// the index of the nodes in the visited … |
| | Hi all, I have a situation where am using String conditions(say if(name.equalsIgnoreCase(Arathy)). I want to replace this if-else loop with Switch cases..What way i can do to accomplish this?  |
| | hello all what is the meaning of : "Value@a90653" I just try to print a variable but the result is "Value@a90653" thank you denny |
| | Dear All, I am writing the following code but I am facing some problem. public void actionPerformed(ActionEvent ae) { if (ae.getSource()==connect) { JOptionPane.showMessageDialog(null, "Connection Estabilished"); } else if (ae.getSource()==disconnect) { JOptionPane.showMessageDialog(null, "Connection Disconnect"); } } When I Write this code, compiler compile this code but does not show messagebox when … |
| | hello this is my first time posting so sorry if I make any errors, im currently trying to ad a sliding movement to a tile game im trying to do, the tiles currently move but they move in a jumping motion, ive been trying to use the coordintes of the … |
| | Im creating a calculator that allows users to enter their own Loan Amount, then choose whether to input their own Loan Interest and Monthly Loan Terms, or to choose between a set of predefined loan terms and interest rate in a GUI. So far I have been successful in creating … |
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