32,204 Topics
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| | Hello, I have three classes: Circle, Canvas and GameBoard. When I try to compile this I get the error `'cannot resolve symbol - constructor Circle(int,int,java.lang.string)'` I noticed if I delete the parameters of the Circle it will compile. Please could anyone tell me why it doesnt understand the parameters? Do …  |
| | hi everybody i am wrking on my final projrct n am facin problem in dynamic generation of any component on a click of a button.I mean in a frame there is a textbox n a button.Now if the user wants to add another textbox he clicks add button and a …  |
| | Im REALLY new to Java Programming and wanted to teach myself java. I download the newest version of the JDK from the website and have run into the javac problem. I keep getting the error that javac is not found or its not a operable program. (Something like that.) I've … |
| | my program will ask the user his last name and his first name. after that it will do a search to see if the last name and firstname matches with the list. if it does then it prints out the phone number if not then it will say name not … |
| | String serverName = ? String portNumber = ? String sid = ? Plz answer my above queries , while conecting with oracle 9i and Java.... its urgent !!! |
| | I am trying to link a class from the book “Core Java” that has worked for years. The class is called “Format”. When I try to compile, I get the error message: cannot resolve symbol symbol: method atof (java.lang.String) location: class Format The code that generates this error is: fYrDefol[j][iDay] … |
| | I understand that JAVA has upgraded or changed their modus of operation and one of my applications - HP C3500 Scanjet can no longer be accessed. It gives the following message:- Unable to start the application. The Java Virtual Machine cannot be loaded - Class not registered. I have deleleted …  |
| | Hello Everyone, Ild just like to take this oppertunity to introduce myself, Hi, im Kar'Melody! Hows it goin? and anyone has a code for a java vending machine I would really appreciate looking at it. Ive allready been working on it all day but I keep getting an annoying error … |
| | Hi friends, i want to know good books that are present to learn J2EE(java). can u please suggest me. |
| | Hi, can any one please help me . how to do web services using REST. please give an detail example. i am using JAVA technology. my id is <email snipped>. THanks in advance. |
| | import java.util.*; public class al{ public static void main(String[] args){ List l = new ArrayList(); Object a = "hello"; l.add(a); l.add("asdasd"); l.add("hgdfsdfshjk"); System.out.println(l.isEmpty()+""); System.out.println(l.get(0)); for(int i=0;i<l.size();i++){ String b = (String)l.get(i); System.out.println(b); } } } i still havent figured out how to solve the warning it gives. can someone esplain to … |
| | Here is the code that I have written please check what is wrong, as I am not able to display Images on canvas. I am trying to create game. package PuyoPuyo; import java.awt.Canvas; import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import java.awt.Toolkit; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.JButton; import javax.swing.JFrame; import … |
 | Microsoft does it again! After having a court trial with Sun, about WindowsXP's problem with Java, Microsoft has come up with a good idea. Make its own version of Java and screw Sun. http://news.com.com/2100-1001-937053.html?tag=fd_top  |
 | Hey, I've created a small rich client eclipse application from the wizard. now i changed my mind and i want it to run as a plugin. it should be fairly straight farward but i can't seem to find where on the manifest to make the change. please help |
| | Just have small program to practice with Calendar. However I come accross something unusual. Once you set date for 1st April 2007 or 1st June 2008 for example you get wrong number of the week. example bellow show code set to date 1st June 2008 [code] import java.util.*; import java.text.DateFormat; … |
| | Hey, I came across this question, this is the 1st time I write a XML file, and I have no idea if my work is correct, or if thats how its supposed to be.......please give me your feedback: Consider the following XML file that describes a pizza: An order for … |
 | Ok I have a program that accepts input from a file. it reads in inputs and is supposed to close automagically when it sees the number '42'. Only problem, I can read the input just dont know how to look for 42. Here's the code? HELP plz. [code]import java.io.* ; …  |
| | This is an example from a book to explain using the WhoWins type for three possibilities. But when I go to compile, I get the error, "cannot find symbol - class WhoWins". Any suggestions? Thanks [code]import java.util.Scanner; import static java.lang.System.out; class Scoreboard { public static void main(String args[]) { Scanner … |
| | first of all I run on microsoft XP, I have a toshiba satellite laptop 1415-s173. I think i'm running using IE 6 I'm not sure I do'nt know how to find out. I think it's either 6 or 5.5 and AOL version 9.0 This is a fairly new computer, purchased … |
| | I've never actually ran a CLI based program outside of bluej. And after exporting one of my programs to a jar, I noticed I was not able to get any results when double clicking the jar. So, I'm guessing CLI based programs are run by a different method, or require … |
| | hello, What problems will I encounter if I use Array although I don' know how many elements need I store? If I set the array size very large than I expected, can problem arises anymore? I tried to use Arraylist. But when there are many attributes, I always declare a … |
| | Hello, im trying to compile few .java files but i'm geting error message: GraphicsHandler.java:62: ';' expected for (Player p : server.playerHandler.players) { GraphicsHandler.java:67: illegal start of expression }}} I just don't know what to do... ----------------------There is my GraphicsHandler.java-------------- public class GraphicsHandler { public static int[] GFXspot = new int[5001]; … |
| | hi all, i got this example from a website, but unfortunately i cant understand some cording in that source. the green color lines are the difficult points that i could not understand. also the database name, user name and password has not specified at anywhere in this cord. how can … |
 | So I've run into this situation a million times in my "learning career" and I've always found a long way around the issue so as not to risk throwing unnecessary exceptions.. Let's look at a simple example... [CODE=java]boolean IsEnabled (JPanel MyPanel) { return MyPanel.isEnabled(); }[/CODE] Throws java.lang.NullPointerException if null is … |
| | Just started reading 'Beginning Programming in Java for Dummies' and when I got to the first example below, I'm getting errors when i try to compile? I have the JDK 5 update 9 and the Jcreator IDE installed. Thanks in advance. [CODE]class MyFirstJavaClass { /** * Method main ** * … |
| | Hi everyone iam trying to learn awt and applets. The code below has compiled well but when i run it iam getting an Exception in thread main "Java.lang.NoSuchMethodError". Could any1 pls tell me where i have gone wrong. import java.awt.*; import java.applet.*; import java.awt.event.*; public class ButtonTest extends Applet { … |
| | I am writing a code for class that calculates 3 different mortgage rates with 3 different time periods and then displays the monthly payment. What I am getting for the output is on 2 of the payments is a negative payment amount. I am at a loss to understand why. … |
| | Taking a Java test I found a for{} loop which had a : character in it?... like this... for { : } I was supposed to fill in some objects, but I have no idea how a : character does in a for loop? Any comments? JON  |
| | Hi Everyone, I'am currently working on this question: Write a producer-consumer problem that uses threads and shares a common buffer. However do not use semaphores or any other synchronization primitives to guard the shared data structures. Just let each thread access them when it wants to. Use sleep and wakeup … |
| | Hi I wrote code for Java program to simulate the rolling of 2 dice. The application should roll the dice 36,000 times. In a tabular format it should show the frequency of rolling 2,3,4,5,6,7,8,9,10,11,12 and also the percentage. It compiles alright but I am not getting the output. Can someone … |
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