36,051 Topics
 | |
| | I'm trying to implement a chatroom using RMI and everything was fine until I tried to bring my GUI into the picture, from what I can see the RMI aspect is fine, the client is sending the info to the server, the server sends it to all clients with callback. …  |
| | Hello! I have a JScrollPane with JTable that is filled from MySQL. I'm using SwingWorker to display JScrollPane while reading data from MySQL database. There is no problem with it. My question is how to add a text "Loading..." to JScrollPanel? I just want to display some message in this … |
| | The problem states to write a method named fallingDistance that accepts an object's falling time as an argument. The method should return the distance that the object has fallen during the time interval. Demonstrate the method by calling it in a loop that passes the values 1-10 as arguments and … |
 | I have file that contains Unicode characters from Latin-1 and Latin Extended A sets (link to [URL="http://unicode.org/charts/"]Unicode charts[/URL]). How do I read it so that these unicodes are converted to proper characters? I tried [code=Java] public void readFile(File file) { try { BufferedReader in = new BufferedReader(new FileReader(file)); String noneUTF; …  |
| | I hav done Ajax code for dynamically select destination city according to user selected source city. My issue is this code work properly on my pc but whenever copied on other pc its not working. I can't understand so please help me. Ajax code is [CODE] <script type="text/javascript"> //window.onload="hideReturn()" function … |
| | I'm back guys! This time I'm working on this project for class. I have to make a "point of sale" thingy. I worked on it using GuiGenie. My design has four buttons, and I want to design it in such a way that when I click one of the four … |
| | Hi, I am having a terrible time getting to grips with layout managers, and am hoping someone can shed some light onto my misery.My problem is this: I have created a simple GUI, that contains a button panel, a picture panel and a radio button panel.All these panels are put … |
| | [B]my project in java is for blind people, basically it is a tutorial. i want some application in java which converts speech into text and text into speech, till now i dont know from where i can these applications. please suggest me in this way, i will be very thankful....[/B] |
| | Hello everyone I am trying to print out a load of printables on different pages, I have made the containing class Pageable, and implemented all the methods as below, the acutal printing is done in printAllGraphs() : [CODE] PrinterJob printerJob; PageFormat pageFormat; int numberOfPages; public void printAllGraphs(){ //this.chart.print(); numberOfPages=this.dataList.size(); System.out.println("Number … |
| | Hi! My GUI consists of one main window and it takes 5 seconds before the this window is displayed (after pressing on the "Run" button in Eclipse). I want the window to be displayed at once even though it’s fetching tasks from the service. How could I do that and … |
| | here is assignment create a book class with getter ans setters. create a driver class book_driver, and create an array or arraylist to hol at least four books. built the book class, built the book driver, having problem successfully building the array. I have not finshed the book driver; as … |
| | how should i prevent the shallow copying? every class i think i would need to copy i need to do the 'clone' function? is there a 'copy constructor'? the thing is - i have a constructor that gets objects as parameters. how do i copy it into the data member? … |
| | [code] //package Answer; import java.sql.*; class Answercheck { public static String correct; public static String user="Brandon"; /* public static void check(int q1) { String dataSourceName = "questions"; String dbURL = "jdbc:odbc:" + dataSourceName; try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection con = DriverManager.getConnection(dbURL, "",""); Statement s = con.createStatement(); s.execute("SELECT copt FROM Ques WHERE … |
 | 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 … |
| | I have a machine logging production info to a database whenever certain conditions change state, so pretty much randomly throughout the day. The plant runs 24/7 so data is continuously flowing into it with about 500 entries in a 24 hour cycle. The shifts are strictly time based and are … |
| | 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 … |
| | I am getting an array out of index error 26 pls I really need help. [code]import java.util.*; import java.util.Random; import java.lang.*; public class testing1 { public static void main(String[] args) { String pass = new String("ENTER THE HAMLET HAM TO BE OR NOT TO BE THAT IS THE QUESTION WHETHER …  |
| | Hi All. Im in the process of writing a basic payroll program in Java. It is for some school work and I am really struggling with it. I have been working with it over the last 3 weeks and have not accomplished much. Below is what I have done so … |
 | Hi guyz. I know this is a simple one but Im a bit confused in doing this. Basically, I want to get the Screen Resoultion of the client machine using my JSP. I have this code in my Bean. [CODE] Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); return screenSize.getWidth(); [/CODE] Problem is it … |
| | question states for me to have the prog read #'s inputed from the user in the range of 0 to 50 inclusive, count how many times each # was inputed, then print all #'s imputed and how may times they were. this is what I have so far.... [code]import java.util.Scanner; … |
| | I'm doing a BankAccount class and in the constructor I need to validate if the string in which the account number is written, is all numeric. Any ideas on how I can accomplish this? Also, it must be of 4 digits...is there some method of the String class that can … |
| | Hello, I am trying to return the union of two ArraySet Strings as a third; however, the compiler is complaining: found : jss2.SetADT<java.lang.String> required: jss2.ArraySet<java.lang.String> union = one.union(two); I was thinking I could pass an ArraySet<String> as the parameter but unfortunetly I am stuck here. Any suggestions on how to … |
The End.