35,618 Topics
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 | hey all I found out today I needed to do a testdriver for my programme as we no it took me forever to do the programme so will some one explain the test driver to me or even help me I no this is a silly thing but im so … |
| | i have absolutely no idea what to do, can someone explain the steps, or do it and explain what they did? [CODE]/** A purse has an array list of coin names that can be changed by adding coins. */ public class Purse { //instance variables private String[] coins; //the money …  |
| | hi,i would like to make a simple hotel.Firstly,I created a simple form(with no validations etc) but i don't know how when i press Submit button then this details to save in a database using Mysql. Can anyone tell me how to do this this? <br> [code]<%-- Document : StartPage Created … |
| | Please help me. I am in an intro computer programming class and I dont know how to use arrays. [url]http://i196.photobucket.com/albums/aa228/Sylvestri89/problem.jpg[/url] |
| | Dear friends my name is Sijo Thomas , now i would like to design an application for accessing a centralized database through a software in java(java used in software and J2EE in webapplication) That means i want to access a data from a centralized database by querying through a software … |
| | Hi this is sri and i am new to java.Here is a xml file. My task is to parse all the xml elements in java without using any parser like dom,sax. So pls help me[U] how to parse xml elements without parsers[/U].I have to get same out put as when … |
| | I'm relatively new to java, so please bear with me. Anyway, I've written a program that makes use of both images and audio, and I'm trying to package these into the .jar file. My goal is to be able to run the program without requiring any files besides the jar. … |
| | Hi I need to create a [B]desktop shorcut to run my application [/B]locally in my PC, I need to [B]launch my web application using Java Web Start in Netbeans IDE[/B], i googled on this particular topic but it says in the project properties window, go to Application --> Enable web … |
| | hello! i need your help to know which checkbox cause the event: i have 2 checkboxes and 2 radiobutton (in swing),then i add the 2 checkboxes to a buttongroup and the 2 radiobutton to a buttongroup,so as default 1 checkbox and 1 radiobutton are selected,so when i check other radiobutton …  |
| | Hello Members, The following problem has troubled me for sometime now: I have an applet called FileA.java. It has two classes both of which are JPanels. Both these JPanels are then added to the applet in the public class of FileA.java. I use BlueJ. The program works well offline on … |
| | neep help in making this 5 54 543 5432 54321 1 10 101 1010 10101 |
| | i have a problem with a photocopying machine task i need to right class called photocopier and add the code to create the instance variables powerStatus, an integer instance variable ( -1= standby, 0=Off and 1 =On) letter, a string instance variable for (none, general, form,menu and paper) copying a … |
| | hi,everyone I try to make one software like microsoft office power point ,but i had problem 1)how to insert image(background) into JPanel (SLIDE)using JButton 2)how to preview the slide THANKS A LOT |
| | How could I synchronise the timer with some process that runs during X seconds. I need the timer to count seconds only if the process is running. If the process is terminated, then the timer must stop. [COLOR="Red"]Most important is that the process execution time is not known apriori.[/COLOR] Otherwise, … |
| | Hey guys! Much help needed here! I am a student doing a protein structure alignment algorithm which is my final year project, using various forms of translation, rotation & computing the RMSD. From line 164: This is my loop calculation, basically it computes the Root Mean Square Deviation (RMSD) of … |
| | I know this is strange, but i have a simple syntax question. Right now I'm working with a thread in the following format. The use of "setDaemon" in the run function does not work, as you apparently must set Daemon before you start the thread. [ICODE]new Thread() { @Override public … |
| | Hi I'm new to java, and I'm trying to make a very basic game. The problem is that i have 3 classes that cooperates and I can't get one of the values from class "Board.java" to "gp1.java". In Board i have a button that "rolls the dice" x2 and adds … |
| | hi to all....i have a video club system where am using an sql server to store records about films....i successfully created the database, the table and input data data into the database using the SQL Command window in netbeans.....however when i use the JOption Pane to input data the VideoName … |
| | Hello I am not sure what is getting serialized. I would like to serialize a JInternalFrame. So what do I send my SaveFrame.java. because it puts a file "null.dat" in the folder. I sent the frame got null.dat sent something I thought was the class of the frame (as shown … |
| | I have the problem like that ". Write a short Java program that outputs all possible strings formed by using the character ‘c’, ‘a’,’r’, ‘b’, ‘o’ , and ‘n’ exactly one."..and the code here: [CODE]public class StringPermutation { //---------------------------------------------------------------------------- private static char source[] = {'c', 'a', 'r', 'b', 'o', 'n'}; … |
| | I have an assignment to write a java class. What I need to do is write a class and a driver. I need to write a class that stores instance data as members names. Golfmember(name : String) then in the driver I would have something like: golfer1 = new Golfmember(); … |
| | I am wanting to have a select box populate from a database query based on the information pulled from another select box as the user chooses it (ie a user chooses a state and the city choices populate or something like that). I am using JSP, Servlets and Beans. Seems … |
| | This might be a stupid question but I can't figure out how to set my array equal to my method which returns an array. This is what I did and there's an error. :/ [CODE]array=array.resize();[/CODE] Thanks guys |
| | I've made an empty mynote.txt in the same directory, and open the following code with Internet Explorer, and allow to write on hard disk (when IE asked) but nothing in the text file: mynote.txt after the run. what is the problem? [CODE]<html> <body> <script type="text/javascript"> function WriteFile() { var fh …  |
| | Array of Random Numbers Write a program called Random50 that fills an array with fifty random values between 1 and 999. However, before a random value is entered into the array the program must check that the number generated is not already in the array. If it is already present … |
| | [code]import java.io.*; import java.io.File; import java.net.*; import java.net.UnknownHostException; import java.net.InetAddress; public class Rfc{ protected String ip; protected int host; public BufferedReader reader; protected PrintWriter writer; public static void main(String[] args){ try{InetAddress address = InetAddress.getLocalHost(); String ip = address.getHostAddress(); System.out.println(ip); }catch(Exception e){ System.out.println("error2"+e); } Rfc rfc =new Rfc(ip,80); rfc.setUpConnection(); String s … |
| | Hi! I want to create a stopwatch that will counter seconds starting from 0. This code worked in case of a real time counter (using Calendar). However, now the counter is fixed on 0. Does anybody know what could cause an error? Thanks! [CODE] timer = new javax.swing.Timer(1000, new ActionListener() … |
| | Hey, so far i have created some code that reads a text file and outputs the information if i run it in eclipse and i now want to have an option when it runs to either show the information in plainscript or html, how would i do this does anyone … |
| | Hi there, In my little code snipet below I am trying to convert an arraylist to an array of type contact. Obviously it's expecting an arraylist of type contact to convert it to an array of type contact. But it's picking up the arraylist as type object for some reason. … |
| | hi all i have 2 files one of which is a gui, the other a java file. I need to take my gui input and put it through the java file. How do i do that? I've tried calling the classes but the input just doesnt seem to be going … |
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