36,051 Topics
 | |
 | Hi there! I have some problem with java. I developing a multiplayer applet, there a class called userServer registry new users and logging in other users. the problem is, that I don't know how to append in a array. [CODE] user Users[]; int cnt=0; Users[cnt] = new user("emorjon2", "password"); cnt++; …  |
 | Hello Guys, I know how to draw line and shapes but how can i draw a parabol??? ( i need a 2D line) Any suggestion or pointers are appreciated!  |
| | |
| | Hi, I urgently need a java applet to make fractals like this one: [URL="http://www.fractalposter.com/fractal_generator.php"]http://www.fractalposter.com/fractal_generator.php[/URL]. Please can someone give me the code? Thanks Gheter  |
| | hello everyone, got issue regarding reading duplicate records in a text file... i need to read the file and look for any duplicates data/keys in the text file and write them to another file (all the duplicates records)... how can i do that, in looping...:-/ any help...:) thanks! |
| | I created JSP page containing form with two comboboxes, I need to pass the selected value from the first combobox to SQL statement used by the second combobox. Any suggestions? [CODE] <form name="subfrm" align="center" action="SaveSubscription"> Event Category: [COLOR="Red"]<select name="evnt_cat"> [/COLOR] [COLOR="red"]get the selected value[/COLOR] <option value="0">--Select Category--</option> <% try { … |
| | hi, i am using ITEXT to create Pdf File . i want to reduce spacing between lines in pdf file is this possible if it is possible then how can i do that. thankx  |
| | Hi there, I am a newbie in this forum,:) I have problem with the R-SVD java for object tracking in video, Any body can help? the references or code maybe... here a give the file of formula of R-SVD for object tracking, I feel difficult to understand and make the … |
| | /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package com.skynet.simpleHttpServer; /** * * @author Gryffy */ /* "Copyright (C) 2001,2005 by SkyNet Corporation \n"+ "\n"+ "Redistribution and use in source and binary forms, with or without\n"+ "modification, are permitted … |
| | i am having trouble with this code. It does not let me compile in eclipse but there seems to be no error? Any clue where my mistake lies? thank you [CODE] package useToken; import java.io.*; class readFile extends StreamTokenizer { readFile(InputStream in ){ super(in); } public static void main (String … |
| | Why eclipse is giving me different answer every time with same program code?is it stack overflow or something?plzz help e fellow programmers. (im using the input box) |
| | I'm trying to run through a file and add each string in the file to a string array. My code yields the error "Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 at StudentLAM.main(StudentLAM.java:14)" Why doesn't this work? Note: I cannot use ArrayList. My error-yielding code: [CODE] private Scanner index; int cell = … |
| | I have a JSP page that has two pieces of data that I need to send to a page on another domain via post when a button is clicked. My original iteration was just having the two pieces of data in 2 hidden fields and when the user clicked a … |
 | [B]I just started to learn Java a few weeks ago but gave up on it after hours of attempts and my code didn't work. Here is my input: [/B] [CODE]class JAVA { public static void main(String Args[]) { System.out.println("Hello World"); } }[/CODE] I saved it as JAVA.java and tried to … |
| | This is the program I'm working on and I'm completely lost A Pythagorean triple is a set of numbers A, B, C such that A2 + B2 = C2. Write a subroutine that determines if 3 given numbers are a Pythagorean triple. The subroutine should print out an appropriate comment … |
 | Ok, so basically i am just trying to pull plain text from a website. basically it will display a person's Runescape stat's in text form. here is my code so far on how to get the url for the page. [code] private void statsButtonActionPerformed(java.awt.event.ActionEvent evt) { String oldrsn = rsnTextField.getText(); … |
| | Hi, im new to jsp and have made a few pages, and can display them using Tomcat, ive made a page counter and managed some validation of a form, but i cannot get this to work: i have a form where you can select a product, then type in the … |
| | Concatenate a substring of the original string sentence starting from index 0 and ending before the middle Character(s). Use the substring() method. Use an if statement to account for even or odd, the end index that you need substring()the end index that you need for substring() will be different public … |
| | I am a beginner in Jpcap. My problem is as follows:- i am trying to send a TCP packet but unable to receive it. The code for sending Tcp packet is as follows. I am working on Windows XP. hoping for reply. [CODE]//code for sending import jpcap.*; import jpcap.packet.*; import … |
| | hey i need some help with my assignment am a seriose beginner i need to create a program using arrays that prompts the user to write a sentence and then prints outs the word and the number of times its appearing..i don't know where to begin please help :( |
| | What is wrong with my code? I'm trying to add a list of paths to a DefaultMutableTreeNode... I'm not getting the result I expect...can anyone help why?... [CODE] public static void main(String [] args){ List lst = new ArrayList<String>(); lst.add("a/b"); lst.add("a/b/c/d"); lst.add("a/b/c"); DefaultMutableTreeNode node = new DefaultMutableTreeNode(""); DefaultMutableTreeNode traverser = … |
| | [CODE]public static void fun(int x){ System.out.println(x); x--; if(x > 0){ fun(x); } System.out.println("returning " + x); } [/CODE] in the main class: fun(5); [U]output:[/U] 5 4 3 2 1 returning 0 returning 1 returning 2 returning 3 returning 4 --------------------------------------- what i don't get is how the print statement is … |
| | import java.util.Scanner;// Import and use scanner import java.util.Arrays; public class Inventory3 { //begins execution of program public static void main(String[] args) { //create new object CD mycd = new CD(); //create and intialize array of CDs CD[] cdArray = new CD[3]; cdArray[0] = new CD("Rolling Stones",100,25,14.99); cdArray[1] = new CD("Pearl … |
| | Hey all, I've posted a few other threads and all the help has been so helpful... I have another assignment and I need some more help. For 9, I'm thinking that I should use a for loop and just do i-- for each time it runs through? After that just … |
| | Hi, I've got a basic javax.swing.Timer that I use to repeat itself to darken an image over and over again. This should give a fade out effect for the image however the delay on this is set to 0010 which should be so quick however it takes half a second. … |
| | HI I am currently doing my final year project and I need to build an algorithm visualization tool(with user defined algorithm animation). The user defined animation takes place as follows: 1. The user can open a text editor in the GUI and type his/her user-defined algo in java 2. When … |
| | How to fetch duration [length] of an audio file? |
| | The assignment I am doing is almost complete but the while loop doesn't exit. package lessons; import java.util.Scanner; public class Chp4417 { public void determineMileage() { Scanner input = new Scanner(System.in); int miles, gallons; //read in the inputs. int counter = 0; // counter int totalGallons = 0; //calculate total … |
| | hello guys., i severely need your help . in the following code i want to transfer the value of rowIndex to next jsp page and want to get it there and print it. please tell me how it could be done. <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>search Result</title> </head> … |
| | Hi everybody, I'm developing a web application in which the user can enter some inputs to run a simulation. For each registered user, there must one folder created, where all the results coming out from the simulation are saved and also some images (png). These images must be displayed on … |
| | Ok, I'm very bad at java and I was wondering if anyone could explain to me how I would begin to approach this? This problem involves a system which processes medical insurance forms. The forms have a three byte code which starts with a first character alpha code of a … |
| | i am very beginner to java getting error in below code [CODE]class forloop{ public static void main(string args[]){ int x; for(x=0;x<10;x=x+1) system.out.println("this is x:"+x); } }[/CODE] error : cannot read :forloop.java i error please help me |
| | I am developing a code in Netbeans 6.7. In my code there is a jsp page that contains a form. This form sends the entered details to a servlet called Client.java. I am trying to run an RMI program in the servlet. I have created the classes Server.java and the … |
| | Is it possible to display a web page inside of a java applet? It would work similar to a frame using html. I guess it would be like a mini web browser inside of a web browser. |
| | I am having some trouble with my Java program. I completed a PoolVolume class project and am trying to add a login and password page before the PoolVolume class starts. I completed the login and password script but can not get the login page to access the next class page. … |
| | I have got further into my program and am at the last hurdle, i am using String.split to split InetAddress IP using getInetAddress. so IP is storing the host name and ip address which is split by a /. I am trying to split the string using string.split but when … |
| | How do you allow an action to be performed when a user selects a specific item on a Choice() component? For example: If a user selects a specific item on the Choice() component, I want a JTextField() to be set to .setVisible(true) and appear. Anyone? |
| | Hi, i'm trying to copy and paste 12 last modified files from a folder to another one. my code is working but it gets every files in the folder with any dates. any help will be appreciated. Thank you very much [CODE]import java.io.*; import java.text.*; import java.util.*; class FileFilterDateIntervalUtils implements … |
| | Write a method called newTest(String input) that accepts one input. Input is a string stored as a variable called input and returns nothing back. Method should test to see if the string’s first and last characters are the same and should disregard case. Use a string method that converts to … |
| | I'm in a beginner Java class at school and I'm having a hard time getting this to work. Most of our problems require JOptionPane and for or while loops and if statements and those kinds of things... For #6, I'm thinking about using a while loop and a for loop … |
| | Hi, new here but would appreciate some sort of help. I have to create a program that takes 20 random strings from a string array of 40 words I made, and store them into a new string array called second. Directions: -create random # generator -generate random # between 0 … |
| | Hello, I am new to programming and I have to write a program to perform a fast search on address book. The address book records are in csv file and contains 4 fields - first name, last name, phone number and company name. My problems are - 1. How do … |
| | Hi everybody,I have java exam tomorrow and one of the question is going to be tracing code,unfortunately I am not vary good at that.My question is if anybody knows web site on the net with similar questions and answers Thanks yesterday the professor give us this example [CODE]public class A … |
| | I need help showing me where I went wrong. Given problem is. Print to System.out a new string composed of every alternate character in sentence starting with the first. Use a loop to go through a string and retrieve characters from alternate index positions. Append these characters to another string … |
| | [ICODE] here's my code below and i cant seem to find out how to return to public static void main after selecting yes in the dialog box. this cud be a very damn question however i get confuse about how to resolve this. thanks. by the way, this program is … |
| | Hello! I am trying to finish this Recursive multiplication program and I am stuck. What I need to do is write a recursive function that accepts two arguments into the parameters x and y. The function should return the value of x times y. I used this program from the … |
| | Hey, i am struggling with this program, i have tried everything i can think of but it still says missing return statement on public String processInput(String theInput){ [CODE]package clientserverassignment; import java.net.*; import java.io.*; public class Protocol1 { private static final int WAITING = 0; private static final int SENTTOS = … |
| | |
| | [ATTACH=right]19321[/ATTACH]If you're serious about developing Android apps, there's only one platform to build and test them on, and that's the Samsung Nexus S. Why? Because first and foremost, the Nexus S runs pure Android. Not only is Samsung's Nexus S, released in December, one of the most beautiful phones on … |
| | ITU wants you write some classes for their Personnel Record System. To make it simple, consider only 4 classes: Person, Employee, Instructor and Student. The following figure illustrates the relationship between these 4 classes. The Person class is the parent class of the Employee class and the Student class. The …  |
The End.