36,051 Topics
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| | I'm working on a program to upload some files to an ftp. I created a thread the starts the upload when the upload button is pushed. When the upload button is pushed the GUI freezes because it is uploading. What change would I have to make to get the GUI … |
| | Hello, I was reading a book and it says that when we want to add new Node that is not in the Head we have make a selection i.e. selection.addNodAfter(element), before we initiate our method. The question is where do i have to do this "selection"? in my main or … |
| | What are beans? I've seen references to them, but when looking up an explanation, I always get lost and confused.....  |
| | Hi everyone! I need your help!! :S I have an app that open a page(JSP) on a browser. I want it when i open the page, it executes some code and then close automatically. Can i do that?? if yes, how can i do that?? please i hope you can …  |
| | Okay heres the problem i have stored Phone numbers from a check box into an array i want to replace #NUMBERS# in the String URL with a value from the array numbers[] example : number[1] = 0000 Before: url:[url]http://www.sendmessgae.com/send?#NUMBERS[/url] After: url:[url]http://www.sendmessgae.com/send?0000[/url] [code] String url = "http://www.sendmessgae.com/send?#NUMBERS" for (int i = … |
| | hi i have a problem with my java program.i can compile and run the java program if i keep them in jdk\bin folder, but i can only compile and can not run if i kept the java program in any other location. can anyone tell me where i'm doing wrong. … |
| | This is chatting program using etherframe packet. I finished crc, gui , making packet and sending packet. but I can't implement stop and wait timeout resend... I can't implement it.. can anybody help me? import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.border.*; import java.io.*; import java.net.*; public class ChatJin implements … |
| | Write a Java application that creates an array of int initialised with the following numbers: 1 4 9 16 17 21 25 33 37 40 and reverses the contents of the array such that the value in the first element is the value that was at the last element and … |
 | Hello, I seem to have encountered a problem with this code. [code=java] try { String changeC1 = JOptionPane.showInputDialog (null, "Change the dimensions of silo 1? (y/n)"); } catch (NullPointerException e) { String changeC1 = "n"; // probably also be a good idea to log the fact an exception occured. } … |
| | Hi, i made a calendar program but now i need to import- export my events with iCal/vCal, any ideas on how to go about. I cant find any tutorial or documentation on it  |
| | I am doing a game and I need to reset the graphics back to its original picture once a new game begins, however when I click the new game button, everything else resets but the graphics do not even though I called repaint. I have included the code for my … |
| | Hey need lots of help on arrays! this is the exercise... 1. Write a Java application that creates an array of int initialised with the following numbers: 1 4 9 16 17 21 25 33 37 40 and reverses the contents of the array such that the value in the … |
| | hi! i have written a program that takes a random number from 0-999, 10000 times. I have the program calculating how many times each number comes up randomly, and finds the mode. But my program doesn't include how to find multiple largest numbers, ex. 2 and 4 each come up … |
| | Hi, I have a line chart that iv created using jfreechart. The graph has six lines.when the graph comes up, there are no lines on it.This is delibrate. Iv also made six check boxes. The problem i have is that when the check boxes are checked, the lines are supposed … |
| | hi! i have to write a gui window, which draws sierpinskys triangle recursively, i have one main class: [CODE]package triangleMod; import java.awt.Dimension; import java.awt.Frame; import java.awt.Point; import javax.swing.JFrame; public class Main extends Frame{ static Point a; static Point b; static Point c; static Triangle tryAngle; static JFrame frame; private static …  |
| | Hey guys! i need help on reversing numbers in descending order. public class ArrayExercise1 { public static void main(String[] args) { int[] values = new int[10]; values[ 0 ] = 1; values[ 1 ] = 4; values[ 2 ] = 9; values[ 3 ] = 16; values[ 4 ] = … |
| | Have written an unscrambler in java. This takes in a scrambled word for input and returns the unscrambled word. The way it works is that it creates all permutations of the provided word (I have borrowed the permutation generating code from daniweb i guess) and compares each word to an … |
| | I had been creating 5 files and I kept hitting the wall. Hope that you will be able to help me pinpoint the problems. (I am not an programmer by the way.) I had been researching for more details on those problems, no luck. Enclosed are 5 files that I … |
| | hi, I am able to display a single image from the database on a webpage using the following code: rs1 = st1.executeQuery("select image from pictures where id='5'"); if(rs1.next()){ int len = imgLen.length(); byte [] rb = new byte[len]; InputStream readImg = rs1.getBinaryStream(1); int index=readImg.read(rb, 0, len); System.out.println("index"+index); st1.close(); response.reset(); response.setContentType("image/jpg"); …  |
| | Hi to all ! Im new to java n i m working on Project of Web base Image Annotation Tool using jsp and java i have to save n retrieve image in to database which im using is mysql How i can store image in to database not the refference … |
| | I have been having a little trouble getting my program to output the results I am wanting. At first I was having trouble with a cast exception at this line: [code]out = (ParseResult[]) ipHostsFound.toArray();[/code] The cast exception was: [code][Ljava.lang.Object; cannot be cast to [Lfilelocation.struct.ParseResult;[/code] So I ended up changing it … |
| | Hey All, I've been working on this code for a while now, but can't quite come up with a working solution. I'm trying to make a specially designed ImageButton, which extends JButton. Basically, it replaces the regular JButton image with another image. I've figured out everything except this. Every button … |
| | I have data in ms-access database.I want to export it to Excel on click of a button which is in front end developed in core java. I am working on frames NOT applet. I developed a macro in access to export data to excel. But i dont know how to …  |
| | can some one help me to develop the code for the following methods [CODE]private void add(Bucket bucket) { // is the bucket in the table? // can it be added to the table? // can the bucket be added at its hashed index? // what is to be done if … |
| | Hi, i am making an event calender but i'm stuck with making sure that a user choose a valid date (a user should'nt be able to choose a start date that is after the end date). Could anyone point me in the right direction please? My code is still a … |
| | Hey there folks,I've been takinga course in data communications, which for the most part has been completely over my head, but anyway, for a project I need to write an instant messenger program. Prof as very vague about the detais, so I think It can be as simple as possible, … |
| | I am trying to implement dynamic rows paging.just imagine for a particular booking id lets say 22 records are there in the database. per page i am displaying 10 records.if u see the HTML code as per sample its showing only 3 records .but in real it will display 10 … |
| | i have a mydata.txt file with this in it: [ICODE]B.Friedel 38 LRC usa 20 1 1 1 21 410 300 300 300 18 0 1673 0 76 26 0 0 0 0 0 0 0 0 M.Fulop 26 LRC hun 17 1 1 1 26 308 300 300 300 1 … |
| | I have my Tomcat Server running (port 8080), I also set up the password "tomcat" during initial configuration. Now when I try to open the internet explore using [url]http://localhost:8080[/url] the page is not loaded. I mean to say that server is running but the page is not being displayed. What … |
| | I am developing e-library for visually challenged people, in this system i kept a utility to add book from one interface. I want to store the location of the actual book in the database while adding a book. For e.x. I am storing the book at c:\books\pdfbooks\bookname.pdf this location c:\books\pdfbooks\bookname.pdf … |
| | I am trying to put together a simple inventory program for my class, but I keep running into one error that I just cannot seem to correct. Here is my code: public class DVD extends Product { // channel that the show was on private String channel; // constructor public … |
| | hi to all ! I have a problem with java class accessing in jsp form i use <jsp:useBean id="db" scope="request" class="untitled5.dataBase_Connection" /> <jsp:setProperty name="db" property="*" /> to access the database class but i have the [B]"The value for the useBean class attribute untitled5.dataBase_Connection is invalid"[/B] I provide default constructor too … |
| | My code is [CODE]package diningphilosophers; class DiningPhilosophers { // Η κλάση αναπαριστά την εφαρμογή static Philosopher philosopher[]; static Forks forks; static DiningRoom diningRoom; public static void main(String[] argv) { philosopher = new Philosopher[5]; forks = new Forks(); diningRoom = new DiningRoom(); for(int i = 0; i < 5; i++) philosopher[i] … |
| | Hi, would someone please help me with the following quotions (the required is to implement a simulator for processes scheduling that takes a file contains N of processes each with required details,and then after reading these information from the input file ,the scheduler should schedule the processes for execution. input:N … |
| | [code]<%@ page import="java.sql.*" %> <%@ page import="java.io.*" %> <%@ page language="java" session="true" %> <html> <body> <% //Getting the text values from create login page String lid = request.getParameter("loginid"); String lpin = request.getParameter("loginpin"); String loginid = lid.trim(); String loginpin = lpin.trim(); [COLOR="red"]out.println(loginid); out.println(loginpin);[/COLOR] // Connect to Database to retrive all the … |
| | [COLOR="Green"]Hello all.. I have a problem with my program in here. I am making a chatting application and i just need a final touch. This is the code snippet i make to represent my problem. First, i'd like to tell that i want to make the sending process like the … |
| | hi i read about JMF and make some search about other techniques of video streaming but i cant get a definite opinion in making this efficiently (high quality video) i need to make a program to transfer video from webcam to other clients over the network thanks in advance |
| | I'm having trouble with a class which is fine until another method tries to access variables in the same class, seems like a scope issue to me. I get null pointers when i try to access an object which clearly works in a previous method. All my data and called … |
| | Hi, I am trying to code a program which will allow a user to search through a .db file for a word which is specified through an argument. The main class is in a different file. I am having a hard time putting the contents from the DB file into … |
| | Hi, I am trying to code a program which will allow a user to search through a .db file for a word which is specified through an argument. The main class is in a different file. I am having a hard time putting the contents from the DB file into … |
| | Hi mates.. I have a small question.. I have now 3 different classes, sounds ok? this is the 1st class, called "Wire" [CODE]public class Wire { private boolean Value; public boolean isValue() { return Value; } public void setValue(boolean value) { Value = value; } }[/CODE] This is the 2nd … |
| | Hi, I'm trying to find out how to call a method from another class every 0.5 seconds until I tell it to stop using a function from the same class (the class that is doing the calling). Does anyone know if this is even possible? I've done a few Internet … |
| | Hi there, have anyone experience with the Telephony API, and can help please?, I have googled about it, and I get downloaded all possible files but I still having problem in understanding some of the connectivity issues, should the PBX I am using in system be compatible with the JTAPI, … |
| | Hello yet again =) I am required to create a program that consists of two classes. The driver class calls on the other class to set/get radius and height variables and calculate the volume of a cylinder. The problem I am having is that; I create two objects with two … |
 | I feel as if I have gone over this code until my eyes are bleeding. I am missing something, and I cannot seem to locate my problem. I am supposed to use an array to store my items, my output should display my items one at a time, and should … |
| | I'm trying to make a program that can send email from mobile phone, and i'm using Mail4ME API and NetBeans to develop it. Here's the error message : [QUOTE]java.lang.SecurityException: Application not authorized to access the restricted API at com.sun.midp.security.SecurityToken.checkIfPermissionAllowed(SecurityToken.java:170) at com.sun.midp.security.SecurityToken.checkIfPermissionAllowed(SecurityToken.java:145) at com.sun.midp.midletsuite.MIDletSuiteImpl.checkIfPermissionAllowed(+8) at com.sun.midp.midlet.MIDletState.<init>(+83) at javax.microedition.midlet.MIDletProxy.<init>(MIDletProxy.java:33) at javax.microedition.midlet.MIDlet.<init>(MIDlet.java:70) at … |
| | I am trying to access a Clientside server file from an HTML file. Can anyone help me with how to code it? :eek: here is what I have: [code=html]<form method="get" <if true then action=" :?: *****This is were I need to access Client side server ****** " else action= "file:///K:/web-content/Client … |
| | hey all, am having a project which aims to develop an online questionnaire system with three pools what i did was that i created an html file that contains 3 forms the form have a submit button to let the user to choose the preferred questionnaire, then he go to …  |
| | Can u suggests me some powerfull but understandable java code for encrypting and decrypting password.The password should be encrypted and stored into the database and can be retrived ,decrypted |
| | I'm a career changer with a Bachelor's degree in an unrelated field. I'm doing an A.S in computer science, and a Masters in MIS right now. Things are going good, I've got classroom experience with Java, C++, html, css, javascript, JSP, php, SQL, taking asp.net. etc.... Just about done with … |
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