32,204 Topics
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 | Hi, i'm trying to use an `AffineTransform` to transform a point to pixels on a 400x400 canvas. What kind of transform would you use? For example: given the points (-1, 1) --transform--> (0, 0) (pixels) (1, 1) --transform--> (400, 0) (pixels) (-1, -1) --transform--> (0, 400) (pixels) (1, -1) --transform--> … |
| | Hi, started programming 2 days ago, and i'm having a problem with Java saying one of my variables isn't initialised. Couls someone help please?! Thanks, code below: public static void adding() { int n = getN(); int total; for (int i=1; i<=n; i++) { total = i + 1; } …  |
| | I have less than a day to understand and learn evrything there is to know about arrays and to be able to know what the output for a code on arrays will give.. I was hoping someone will be able to suggest any good sites etc.. from which i can …  |
| | Hello, I am taking my second Java course this semester CSC-251 (advanced Java). I took introduction to computer programming last summer. With three programming courses under my belt will I be able to find a job out there in the real world? For a little background information about myself. I …  |
| | Was not sure where to post this, but let this a go. I m on my final year. And I have discovered in myself a passion for programming in C and started learning it but it is all in a beginning stage. I really bored of Java or I just … |
| | i need to make the Print JMenuItem to open a printdialog box when clicked but i dont know how to make it can u help me pls p.addActionListener(new ActionListener() heres the code can u add the printdialogbox i searched but i cant put it on the program import javax.swing.*; import … |
 | How can I work out these questions?? Would really appreciate your help. things like looking for things in the Hashmap. • isRally - takes a String containing a rally code as a parameter and returns true if it represents a rally object stored in the allRallies collection, and false otherwise. … |
| | So we are working on loops right now, I got the first portino of my program up and running how I want, took some messing around with but I finally got it. Here is my assignment: > Credit Card Number Check. The last digit of a credit card number is … |
| | //Hello(apologize for any formatting errors) //I am trying to finish this program that is supposed to act as a club bouncer. Only letting a max amount of people (125) in at one time. Naturally people leave throughout the night, so I was trying to //implement that with the random variable, …  |
| | Hello guys. I'm getting an error as follows: Error I get on the browser:- type Exception report message: descriptionThe server encountered an internal error () that prevented it from fulfilling this request. exception: org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP PWC6199: Generated servlet error: string:///GuestBookView_jsp.java:8: cannot find symbol symbol … |
| | HI, I have a class Customer and Vehicle. Fist a customer needs to be added to the application. when a vehicle is being added the customer id needs to be added also so i wrote the code as below @Override public void addVehicle( String make, String model, String year, String … |
| | Hello, What is the best way to check my code? I have written a program that counts the swaps required to sort an integer array using the Bubble, Selection, Insertion and Quick sort methods. How can I be absolutely certain that my swap counts are correct? Will someone take a … |
 | who learn java with me if any one then ask me question ???????????????????  |
 | hello guys i want to make progress bar in netbeans i trying with this code but the progres bar doesnt work property just showing 100% when finish and doesnt have animation of doing that progress: public final class Music extends javax.swing.JFrame { public static class Start implements Runnable { @Override … |
| | So I am making a GUI that the user inputs the username and password to login to my schools website. I then want it to open up the default browser and open multiple tabs to the schools website while being logged in. I'm not entirely sure how to be logged …  |
| | Hi everyone, I have created an implementation of the game Tic Tac Toe using a board array that is 3 x 3. It reads in a turn from the user via the keyboard, and then the computer returns a move. I have written the computer AI to basically do the … |
| | import java.io.*; import java.util.*; import java.util.Scanner; public class cooperativeCanteen60 { static Scanner console = new Scanner(System.in); static Scanner sc = new Scanner(System.in); public static void main(String[]args) { //throws java.io.IOException { Scanner in = new Scanner (System.in); int type; int discountRange; int discount; int customerType; int number; int rtotal; int vtotal; … |
 | Hi! I'm working on a notepad project and like original notepad i want the form title set by the name of the file that has been openned so how can i do that?! thanks... |
 | Someone try my code. And help me with the txtQty TextField. import java.awt.*; import java.awt.event.*; import java.applet.*; import java.text.*; import javax.swing.*; public class Cashier extends Applet implements ActionListener, KeyListener { private final double applePrice = 15.75, orangePrice = 13.50, pomeloPrice = 95.25; Panel topPanel, eastPanel, westPanel; Label lblTitle, lblQty, lblTotal; … |
| | I am trying to play an mp3 file using the JMF java library and an mp3 codec with the following code but i am getting an error and don know the source package source; import java.io.File; import javax.media.Format; import javax.media.Manager; import javax.media.MediaLocator; import javax.media.Player; import javax.media.PlugInManager; import javax.media.format.AudioFormat; import javax.media.*; … |
| | This is the output: https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-prn1/541619_462450913826230_932486202_n.jpg This happens when I input "1" in the quantity textfield. (The quantity textfield turns null after inputing a value) But when I put "1" in the quantity textfield and click Oranges, it overwrites the Apples. https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-ash4/299813_462450910492897_2137805386_n.jpg WHat i wanted to happen is that it'll tally …  |
| | Hi, I am trying to do a hotel system where i have written up this code, however i was wondering if the there was a way to make the main program simple. So what im trying to do is the code that ‘Views All rooms’ and ‘Adds customer to room’, … |
| | I have to access a java swing application which is on server machine from a java web application Please help me. I have to send few attributes tu Gui apps and in turn retrieve result from that.. |
| | hello i have some problem in showing button, when data exist and data not exist. i want the button show if data exist also data not exist. my current problem right now the button only show when data exist but the button automatically hide when data not exist. here what … |
| | OK so what I want to do is create an infinite loop scanner that will add up all the values from the previously entered values which will then produce after each entered number the total value. How do I do this? |
| | I would just like to know what is the difference between a CONSOLE APPLICATION and Windows Application in netbeans?? |
| | Just a curious question, not important really. More for a discussion. Isn't using int i = 0; boolean count = false; pretty much the same thing when flagging? I mean when something goes right, change i = 1; count = true; and get the same result. What's the advantage of … |
 | code for : Percolation using Weighted Quick Union Find Algorithm. this is a homework assignment. iv made the code do what its supposed to do, and it works perfectly. The only problem im facing now is to model the code structure according to the given API. when i try to … |
| | So what I want to do is extend my class 'TheTemplate' from my 'Squarer' class and override my abstract methods which will change the method 'isEnd' from 12 to 20. How do I do this? Code can be seen below: public class RunTemplateExample { public static void main(String[] args) { … |
| | somebody know how to make the text which is in the text field on click to disapear ex: If saying "Search" when ill click on the text field the text to disapear and i can write ... Thanks ! :) |
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