36,051 Topics
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| | his is my java assignment. I really need help with it. It is basicallY a Cyber Pet program where in you make the use of a GUI. Here is the file that you can download the whole question from. [url]http://www.mediafire.com/?gfw9c16tubdlf[/url] You gotta have 2 packages : One for the GUI … |
| | Hello, I am new to java. I want to display the database records in JComboBox. I have 2 combo boxes. say color and object,whenever i'll select any color from combo box, next combo box should display the objects of that color. I have write one code for it, I use … |
| | [I]Hi, Sorry for coming back again and adv thanks for guidance My tutor gave me a assignment, couple of days before he taught me the work flow of java in eclipse, i am getting through it and i was asked to use constructors for the arithmetic operations as methods in … |
| | Why is the output 10 and not 9?. According to my understanding the count value is assign to b. Then the count value increment. Hence the output should be 9 instead of 10. However in this case the output is 10. Why?. [CODE] package com.nowhere.blogger.core.junit; public class Bunnies { static … |
| | Hi All, I was wondering if any of you would know of how can i change the interface of a java program to a web based interface using html5. I know i could do this easily using jsp/java.net but my requirement states to change the java desktop program application interface … |
 | Hey; I am following CoreJava and came to Event Handling chapter. I am trying to show a popup menu when the red button is clicked, but not works. Background color changes but no popup menu is shown. What is the problem? [CODE]/* * To change this template, choose Tools | … |
| | Hi guys! Been spending 2 days for this problem. Im having this error message whenever i run the program in netbeans6.9.1, [QUOTE]org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'net.sourceforge.jtds.jdbc.Driver' at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1136) at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880).... ...[/QUOTE] The was working fine not until i tried exploring iReports 3.7 and creating a classpath (in iReports) … |
| | Here are the picture.. [IMG]http://img830.imageshack.us/img830/6774/chequea.jpg[/IMG] [CODE]<jsp:useBean id="chequeStopBean" scope="session" class="my.com.infopro.ibank.ui.bean.ChequeStopBean"/> <jsp:useBean id="labelBean" scope="session" class="my.com.infopro.ibank.ui.bean.LabelBean"/> <jsp:useBean id="lang" scope="session" class="my.com.infopro.ibank.ui.bean.LanguageBean" /> <%@ page language="java" import = "java.util.*" errorPage="" %> <%@ page import="my.com.infopro.ibank.dto.ChequeDTO"%> <% request.getSession(true); String contextPath = request.getContextPath(); chequeStopBean.queryAccList(); //RequestDispatcher dispatcher = null; %> <html> <head> <title><%=labelBean.getLabel("STOP_CHEQUE")%></title> <meta HTTP-EQUIV="Pragma" content="no-cache"> <meta HTTP-EQUIV="Expires" content="-1"> … |
| | I've been coding in Java for about six years now (personal projects only). I follow the... [I]Java, How to Program[/I] (Deitel, 5th ed.) book. For a particular project, I've coded several Record structures, each in their own class file. Is it possible to put ALL of my Record structures into … |
| | hello all members! i have just written a java application about menu. i got error that: cannot find symbol. could you all tell me all possible causes of this problem. i have tried to follow some of instructions on internet, but no help. thank in advance for your help. p.s: … |
| | Hi, So I just done this class for the semester but am still having this problem in the back of my head that I need your help to clear it out of the way. Basically, the program here about covert the Octal number to Binary number which Octal number will … |
| | [url]http://sparrow.ece.cmu.edu/~adrian/projects/secure-routing/ndss03.pdf[/url] I want to know if we can implement this paper entirely with java.It is a security mechanism for routing protocols---we cannot afford routers so thinking of simulating them.  |
| | @NormR1 or anyone please help, This program is to convert the input octal to output the binary in multiple number within the octal (ex: 24546, not 4 or 2 in single input)using an array. Thanks I converted it to integer, but how do I read one integer at a time …  |
| | can I know how to access the databse from jena using tdb and arq..am unable to get the resultsetformatter in jsp..the code runs perfectly in java,but i encounter problem in jsp... [CODE] String s = "" + "PREFIX dc: <http://purl.org/dc/elements/1.1/>" + "PREFIX skos:<http://www.w3.org/2004/02/skos/core#>" + "SELECT ?s " + " { … |
| | Hi, i was wondering if anyone can help me. i am new to php and was wondering if it was possible to embed javascript in php. i was trying to get an alert/msg box up to explain an error to the user. i have written the following code <?php ............. … |
| | Hi All, I have the hidden field defined as: <form method="post" name="userform" id="userform"><input <input type="hidden" id="movieIdHidden" name="movieIdHidden"></input> .... When the form is reload I set this field as document.userform.movieIdHidden.value=1000; In the JSP I read this value as: string strmovie3 = request.getParameter("movieIdHidden"); // convert to int int movie3 = parseInt(strmovie3 ); … |
| | hello all I am having a problem when i download the files from the browser there are 2 blank lines on top and 2 blank lines in the last.while in the original file on the system there is no blank line.Code is as follows Thanks in advance [CODE]<jsp:useBean id="campaign" class="com.cellebrum.campaginManager.hourlyMIS" … |
| | Hi everyone, I've been working on this for a couple of days now. I need to make sure that an error message is given if txtname has a numerical value in it, and I also need to make sure that an error message is given if txtscore has a non-numerical … |
| | Hi, Now i'm doing my Machine Learning job about k-NN and k-Means. I need to create graphics about my data coordinate. Basically, i don't have any idea to create this. Is there anyone can help? |
| | Hi..! i need to make a trial period software. Do anyone knows how to do it. I have gone through many links and still searching in google, but everywhere i found only some points mentioning about the way of doing it, but no one explains about how to do it... … |
| | Hi guys, I've been working with a project that requires me to use mutiple jcombobox. I did try to relate three jcombobox but failed to show all necesarry drop-down lists. in one of my combobox I have lists of Banks (Bank1, Bank2), the other one is the list of all … |
| | Dear All, I have string where I want to get its checksum value specifically using crc-16 (modbus) in java. Any help or tutorial on how to do it? I saw some links saying lookup tables but I am not quite sure about it. Thank you. |
| | Dear All, I have snippet of code as below. It is a listener which is waiting for the data so I use local to telnet to this program in the same machine. Nothing gets printed unless after sending the data I press enter. On the other hand if I use … |
| | Hi, Trying to get this bit of code to work so that a train goes up the track, leaves the track and then a train comes down the track, leaves and then a train comes up the track and so on. Only one train is allowed to go onto the … |
| | hey i am new here i am working on a school project where i am building an applet.. i have encountered a problem i cant solve, i have 2 classes... the first class i very simple it has to methods which return an string array for table column and Object … |
| | Alright, I have the bad practice of not commenting my code very often when I write it so I'm going to try to explain what the problem is as clearly as possible. In this program I have to set up a battleship like grid of buttons. In order to determine … |
| | please if any one has java tutorials for the beginner programmer in java (sites , vedios ,etc..) |
 | So I imported a project over from my school comp, and it seems to run ok, but I got these errors, and i don't know what they mean, or how I can fix them. [IMG]http://i421.photobucket.com/albums/pp296/rskom/issue.png[/IMG] Thanks for the help! -Austin |
| | Hello. I am New Here and This is my First Post :) I'll Start with a Question, That is I know java, But not much. And I know how to build a Program if some one tell me to make a program that calculates area of a Square and something … |
| | Hello guys i've been learning java for a short while and have come upon a problem which i cannot seem to solve. I have a boolean array of 11 values, now i want to prompt the user into entering the number 1 or 2. If the user enters 1 I … |
| | Hi, I'm trying to set a background image of a JFrame. I researched on google but i haven't gotten anything to work. My idea is to make monopoly with the board in the background and have the pieces move around on top of the board. Thanks in advance  |
| | Hi all I am having a problem with my method in my linked list class to split linked lists into two sublists. The issue is that for some reason my first sublist has 3 more elements than the second sublist when I split a linked list with a total of … |
| | So im setting up this gui, but im getting this Nullpointer exception: [CODE]Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at addressbook.dnDisplay.jButton1ActionPerformed(dnDisplay.java:222) at addressbook.dnDisplay.access$600(dnDisplay.java:22) at addressbook.dnDisplay$7.actionPerformed(dnDisplay.java:128) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:6289) at javax.swing.JComponent.processMouseEvent(JComponent.java:3267) at java.awt.Component.processEvent(Component.java:6054) at java.awt.Container.processEvent(Container.java:2041) at java.awt.Component.dispatchEventImpl(Component.java:4652) at java.awt.Container.dispatchEventImpl(Container.java:2099) at java.awt.Component.dispatchEvent(Component.java:4482) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577) at … |
| | Below is how I set up my JFormattedTExtField. The database (derby) will take the format no prob. The db will then change the form to yyyy-MM-dd If I follow that format from begining to end the JFormatted Field will be fine. However, when a date is queried from the database … |
| | I override the equals method in the Friends class, yet I do not see the value "Spring 2002". Rather I see the value "null" instead. Did I miss something in my code? [CODE] package com.n2n.blotter.core.junit; import java.util.*; public class Birthdays { public static void main(String[] args){ Map<Friends, String> hm = …  |
 | i have encrypted some login credentials in mysql database using md5, now i want what i input as login credentials to be encrypted automatically to ease comparison with the encryption in database: This is how far i have done, no errors bt i cant login anymore [CODE]try { Class.forName("com.mysql.jdbc.Driver"); Connection … |
| | Hi all i want to implement cricket live streaming in to my web page. What should i do for that. From where i can purchase the video and how can i implement that in my web page, Please help me. |
| | I don't know what I'm doing wrong, I've at it with trial and error for quite some time and still can't figure this one out. Here's the question and I'll add what I have so far at the bottom. Basically I have no idea how to meet these specifications with …  |
| | hi! i found problem in using timers.... do anyone help me in this regard as i have no idea about it...... please.... i am sending a code which i tried but in vain. i know where the problem arises.... but cannot find any solution of solving the problem..... [CODE] package …  |
| | Hi you all! I hope someone here will help me, i have workt with my java-program for 14 hours and i cant get it right. Im sure im on the right way but i cant get i all right. ok.. first i have to create a dice-class that generates random … |
 | is it possible to incorporate a class file that is written in applet into a JLabel in application? I know it is possible to put HTML code in a JLabel, so I copied the code from my html file created when I compile and run the applet. I put it … |
| | Unfortunately Array's aren't my strong point and this final lab is giving me a bit of trouble. Basically I need to make it so the code will return true if the given array is sorted in ascending order (lowest to highest). or it will return false. Then i need to …  |
| | Hello everybody, I have a xml socket server which get data from xml sockets out of actionscript3. Now I'm having a lot of if statements. Can I use another way to make my code more clean? Ivibot is a piece of hardware my school provided. LedBlink is a runnable class … |
| | Hi, I'm iterating an Arraylist inside a synchronized method, and I've set the Arraylist synchronized inside the method, but I still got the error ConcurrentModificationException. Why this is happening? [code] private synchronized TaskInProgress findTaskFromList( Collection<TaskInProgress> tips, TaskTrackerStatus ttStatus, int numUniqueHosts, boolean removeFailedTip) { synchronized(tips) { Iterator<TaskInProgress> iter = tips.iterator(); while … |
| | Hi guys, Im trying to write a program that find the biggest rectangle by its area. I've tried and it doesnt seem to compile. Can you help me please, thanks. [CODE] public class Rectangle { private int width; private int height; public Rectangle(int width, int height) { this.width = width; … |
| | [CODE]import java.io.FileReader; import java.util.Scanner; public class diverScores { public static void main(String[] args) { Scanner kb = new Scanner(System.in); double [] score = new double [8]; double totalScore = 0.00; Scanner fileScanner=null; try{ fileScanner= new Scanner(new FileReader("divingdata.txt")); }catch(Exception e) { System.out.println("Input file not found"); System.exit(1); } while(fileScanner.hasNext()) { String fileLine … |
| | i am working on a project in which, i have a text area and when the user enters some details in that text area, the data should be saved in a text file and the path should be saved in the database, when another user wants to access that text … |
| | I have never heard of it. I am researching on how to implement the internet to my program and I come across it. it seems to be easier then what I was trying to do for the past while. Could someone please link me to a website that can provide … |
| | Hello friends, Forgive me If I am posting this on a wrong Section. I am developing an application in Android. In that I need to compare a Audio file with the Audio input(Singing Voice input) and tell that whether that is same song or not. So I dont know which … |
| | Hello everybody!! I'm trying to print a *.pdf file from Java code, and the printer out gives the right document, but smaller than the original pdf (smaller text, images, margins, everything), the print result seems shrinked from the original... Here is the code I'm using: [CODE] File f = new … |
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