36,051 Topics
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| | here is my code and i am receiving errors for my test class. //*************************************************** // // Project 6 // Assigned: 4/27/10 // Due On: 5/4/10 // // This Project Creates a Binary Tree Using the Class // BinarySearchTree, and Inserts an Array of Integers // Into the Tree, and Then … |
| | Hi Experts, I have question on the bellow program (runs perfectly), 1. As I have created an instance (object) of startup class and we dint called method [B]paint[/B] from the [B]main[/B] method using the object but [COLOR="Red"]still it is called (how?)[/COLOR]. But in case of Instantiable classes, we need to … |
| | using exception try, catch and finally derive a program that accepts any 10 letter string. if the string is greater than 10, display an error message; if string has no vowel display an error message else display only all vowels. can u help me for the java code of this …  |
| | [B]Moderator comment:[/B]This question was originally posted in [url]http://www.daniweb.com/forums/thread184423.html[/url] and moved as original thread is old Hi there, i need help with my assignment please help me. i want to put your code to my code, which is my code is; i tried but i couldn't solve it. [code]import java.awt.event.*; import … |
| | Hi there I'm trying to check if an array area exists, e.g. [CODE]if (array[99][99].exists){ ....}[/CODE] THis doesn't work... e.g. It gives me an arrayIndexOutOfBounds error. What I need for it to do is just ignore and carry on the code. If it finds an arrayIndexOutOfBounds, fine, carry on, just ignore. … |
| | please anyone inform me step by step to build a signed jar form a jar.. ie signing a jar file which contains applet |
| | Hello, I have got a Java queue and i want to print out the smallest number in the queue. Right now my program prints out the first number in the queue. Here is the code: [CODE] import java.util.ArrayList; import java.util.Iterator; public class Assign1 { private final int MAX_QUEUE_SIZE = 5; …  |
| | Please help to come to from this problem: i had written a sample code to display Hello and imported as jar files then created new dynamic web project and using a hello.jsp page i am calling the applet class but its not display the applect please give me the solutions: … |
| | I need some help with classes and methods. Here is what i need to do: 1. Create a concrete class, Robin, which inherits from Bird. Robin has a single instance variable, name, of type String with private access. Robin implements the remaining required methods. Here is the code for each … |
| | I am trying to compare an array user_correct[] if it has a 0 it hasnt been used if it has a 1 it has. However it is not registering my if statements. [CODE]import java.util.Random; import java.io.*; public class Lottery { public static void main (String[] args) throws IOException { BufferedReader … |
| | I am suppose to write a method that checks whether a string is a valid password. The password rules are: 1.) A password must have atleast 8 characters 2.) A password consists of only letters and digits 3.) A password must containt 2 digits I need to write a test … |
| | I had thought I was finally done with this program, it finally ran but then realized that it wasn't doing the right thing mean LOGIC error :( Can someone plz help me correct this error I have been messing around with it but keep running across errors Here is the … |
| | About two weeks ago, I was given a simple project in Java II; code a program that displays an image, plays a sound, and has loop/play/stop buttons for the sound and zoom in/zoom out buttons for the image. I decided to go ahead in the book with this project to … |
| | I am looking for help in completing my final due this friday... I need to program my mover to clear the grid using recursion. For some reason, when going counter clockwise when he gets back to the top row he stops. All of my conditions for movement are showing as … |
| | When making a GUI, does it matter whether you use 'content' or 'this'? For Example: [CODE]content.add(b1);[/CODE] OR [CODE]this.add(b1);[/CODE] |
| | Hey everybody, I was wondering if somebody could help me. I'm having trouble with this assignment, tried to email my teacher a few days ago and he has not returned my email, it's for an online class. The whole chapter is talking about abstract classes and Inheritance and it's very … |
| | Hello, For java interface, In one class I have the following code public class ObjectA { public void SampleA() { //do something 1 } public void SampleB((int aPosition) { // user enter some value } } I have another class which is not related to the other class, only interested … |
| | I'm having an issue with my code and after hours of time I can't figure out what I'm doing wrong. There are three classes (GUI, Judging, TestGUI). All programs compile correctly with no syntax errors. The GUI creates an interface that should compute (JButton) a total of 8 scores and … |
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| | Can anyone help me out as well? I'm geting the illegal start error when starting the loop (while) in the following code: [code]import java.util.Scanner; public class Targiln5 { public static void main(String[] args) { Scanner input = new Scanner(System.in); double a, b; System.out.println("Please enter the equivalnce of a and b"); … |
 | I have done a lot of PHP but never JSP. I have checked tutorial but not gone too far. I see there are Java beans and some servlets which I'm zero brain at. So I have two questions: 1. Where to read a concise tutorial (Not too detailed I mean) … |
| | I was looking for Jump start tutorial for JSP/MySQL. I found Peter budo's sticky. Since I wanted to learn it even offline I decded to put it in word Doc. I will nice format it if I get time and make PDF out of it. However I know some might … |
| | I have been working on a program in java which displays the different steps of sorting a list. My step() method updates the gui with the current iteration of the sort, and works fine when it is called from my button's action listener. My goal is to make an auto-step, …  |
| | Hi All, I need help with try catch statement at the statement. for code `myChar = s.readLine().charAt(0);` I keep getting error: can't find variable myCar and s if te remove the whole try catch statment I get error: unreported exeception java.io.IOException; must be caught or declared to be thrown on … |
| | hi, in my registration page i am trying to get the gender of the user through radio button. i know how to use <s:textfield but i am don't know how to use <s:radio in my jsp page. please help me. |
| | Hi All, I am supervising a project on JSP. The problem is JSP is not compiling in IE6, the coding environment is running through NetBeans. The version of the browser is as per project requirement. FYI- the DB is PostGreSQL. Please help me  |
 | Hi all. I'm new with jsp and i'm just looking for create a login solution. I use a mysql database and what i'm looking for is what follows: Make a query to my sql database and then insert the output of one field in a variable. I need this variable … |
| | Hello I have the keycards.xml. and it's DTD and the sys put it in a location out side of my package src folder. Is this correct? Should I move this folder to a package in the src file. I am not sure how to locate it if this is true. … |
| | some days back it was working but i don't why suddenly my java program is not compiling. i have set classpath=".;C:\Program Files\Apache Software Foundation\Tomcat 6.0\lib\servlet.jar". c:\> javac -classpath HowdyServlet.java it shows error in import java.servlet; statement and likewise in all HttpServlet lines too. or i have tried the other way … |
| | Problem: I need to create a 2-arg constructor to do the following --> 2-arg constructor that accepts a RetailItem object as an argument that is used to initialize the retailCost attribute. The 2-arg constructor is created in the CashRegister class. here are my classes so far: ------------------------------------------------------- [code]/* * Retailitem …  |
| | Hi everyone, I have a system where a user can order some predefined items. To do this, I have been using a switch statement, e.g: [CODE] System.out.println("Product?"); System.out.println("\n1. Chair\n2. Table\n3. Desk\n4. Other"); int sel = 0; sel = console.nextInt(); switch(sel){ case 1: <code> case 2: <code> case 3: <code> [/CODE] … |
| | Here is my code for a JDBC program to do account transfer. I am having trouble with my transfer code. Can anyone help. This is urgent. [CODE]import java.sql.*; /***************************************************** class BankAccountTransfer { /** Make a transfer from two accounts owned by same customer. * @param custNum the 6-digit customer number …  |
| | Okay, so i've been trying to get this code to work for quite some time, and i'm about to go bonkers. Hopefully y'all can help me out with this problem because I need to hand this one in soon. My problem is I need to make an array of objects. … |
| | Hello there I am looking for some help. How can I go about creating a list of JPanels in Java? I want them all to have subcomponents, to be created dynamically, and be able to return events. How can I do this? I have checked and I know I will … |
| | hello i'm supposed to configure a microcontroller connected by serial port all the way from another machine but i'm having troubles fusing my codes this is my rmi stuff [CODE] import java.rmi.*; import java.rmi.server.*; import java.net.*; public class SerialServant extends UnicastRemoteObject implements Communication { public SerialServant () throws RemoteException { … |
| | Okay, so I made a method that will take a Track with the MAXIMUM_RATING, which is 10 and make an another ArrayList for those tracks with the highest rating. [CODE] public ArrayList allTracksWithMaxRating() { ArrayList<Track> maxRatingTracks = new ArrayList(); int i = 0; while (i < tracks.size()) { if (tracks.get(i).getRating() … |
| | Okay.... I have been working on this for 3 days now and can not get any further than what I have. Any help would be greatly appreciated... Thank you. Here is what I need to do: Write a program for keeping a course list for each student in a college. …  |
| | I am doing a project on a print spooler. I am using multithreading to support multiple clients. The problem is that I need another thread on the server side to take care of the printing by extracting jobs from a priority queue. If the queue is empty the thread must …  |
| | I want to be able to maximize and minimize my applet from a menuItem (in a menu). Right now, I have it set up such that the menuItem is supposed to minimize the window, and another menuItem that is supposed to maximize the window (like the Minimize and Maximize button … |
| | I have created a class that builds an embedded database and creates all the tables now I am using a properties sheet for creating the table I would like to use XML to hold elements related to each table in an xml properties file to handle an unlimited number of … |
| | Hi, I'm completely new to java. I'm trying the tackle this following scenario. For e.g. I've a list of “Tasks” and their dependencies. E.g. Task D depends on (Task A and Task B) , Task A depends on Task B, Task B depends on Task C. I'm trying to write … |
| | Hello all, I wrote a jsp page. It has a form with a submit button that sends the data to some algorithm. I would like the submit button to load a "please wait" html. After the algorithm is done - that "please wait" page will be auto redirected to a … |
| | What I want to know is the difference between the development, scalability and cost of ASP.NET(C#) and Java. I know that in most cases Java is slower than C#. But how much slower? I also know that to run .NET we need Windows(excluding Mono). Will the cost of the license … |
| | I want to develop a java application for converting indian time to any world time. I also want to include the daylight saving also. Can anyone please tell me the algorithm to convert indian time to world time? |
| | Sorry I couldn't think of a better title, but thanks for reading! My ultimate goal is to read a .java file, parse it, and pull out every identifier. Then store them all in a list. Two preconditions are there are no comments in the file, and all identifiers are composed … |
| | Hi guys, First off I would like to mention that I am not an experienced Java programmer. I've been programming for about a year and taken one AP level course in high school. With the exam in a few days, I was wondering if anyone could clear something up for … |
| | Hello, i'm looking for someone who can do a GUI, Event handling and Mouse Events. You need to have an understanding of UML as well. It's not a relatively big task but i can pay between £20 - 40 for it. |
| | hello i need to send and get one char from serial port but i'm making a mess of it so i kept reading a few tutorials in the web in the end i dowloaded and tried a code i found, it works but this thing only sends one string and … |
| | Please let me know how to fix this. description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: Unable to load class for JSP org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:599) org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:141) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265) javax.servlet.http.HttpServlet.service(HttpServlet.java:803) root cause java.lang.ClassNotFoundException: org.apache.jsp.one1_jsp java.net.URLClassLoader$1.run(Unknown Source) java.security.AccessController.doPrivileged(Native Method) java.net.URLClassLoader.findClass(Unknown Source) org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:134) org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:66) org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:597) … |
 | hey there. I have been struggling with separating classes in java and figuring out what methods go in what classes. when i build my apps in one file, i do them right, but when i try to separate classes, i mess up. like for example: I have these two classes: … |
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