31,001 Topics
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 | Aoa... i m new to java.. please help me to correct this program given blew. it shows error of illegal start of esxpression.. how could b it seems as correct program please help me.. thanks alot **error: illegal start of expression JOptionPane.showMeassageDialog(null, "ID: " + ID + "name: " + …  |
 | I tried using Daniweb OAuth for android application but didn't able to understand as it requires redirect url but in my case it is a standalone desktop application interacting with dani webapi's. Do i have to create a webapp and then my application instead of contacting daniweb,contact my website and … |
| | hiii.. I got this strange problem.i m refreshing my jframe after every second.This jframe contains a button called addbutton.This addbutton opens another jframe.and that jframe contains a JComboBox .The problem is after every second the JComboBox is getting refreshed.I dont understand why.Before the user gets time to select any item … |
 | Hi all, as some of you might know the API is my nightmare. I know it's important and therefore I am trying to use it as much as I can. Today I am looking at a program that uses buttons to change the font of some text. So, I have … |
| | I am using variables for my numbers. I require the smallest number and so I use `min()` to achieve that but if I have multiple values it will only take them in chronological order. var a = 98 ; var b = 82 ; var c = 61 ; var … |
| | Hi, What is the default value of float and double datatype in Java? Its my interview question anyone know the correct answer? anyone.. |
 | Trying to return Multiple Card objects from a hashmap Currently using the following code private HashMAp<Integer,Card> allCards = new HashMap<Integer,Card>(); public Card getAllCards() { Collection col = allCards.values(); for(Card c: col) { return c; } } This works but only returns 1 Card object from many. How can I change … |
| | I have been asked to count the overal time of an album. The user enters minutes and seconds in the formmat of mm.ss. I have wrote the folowing code but I don't get the result I supposed to get. I.E : 1st:3.55, 2nd 3.55 I got 7.1 instead of 7.50. … |
| | I am trying to calculate the overall time of an album. The user enters the track length (double) in format mm.ss . Then convert this in a String so I can calculate min and sec separately. public void overallRunningTime() { int min = 0; int sec = 0; for(int i … |
 | Hi everyone! I have in my GUI and two radio button **choco** and **gecode** and under each button (choco or gecode)I have 2 radio buttons *solution optimal* and *Feasible solution*: my problem lies in the selection buttons. Let me explain: when I click the radio button **choco**, I … |
| | Hi, I'm trying to load four file File1 contain 50 first name File2 contain 50 last name File3 contain 50 dpeartment File4 contain 50 id number I want to load these file for example when the files load I want to generate (randomly) this output id,first name,last name, department but … |
| | Dear All, I am trying to understand RMI Concept and have tried the sample steps and programs written in Oracle website [http://docs.oracle.com/javase/tutorial/rmi/compiling.html](null) In this URL they have mentioned to run the command as below javac -cp c:\home\jones\public_html\classes\compute.jar client\ComputePi.java client\Pi.java mkdir c:\home\jones\public_html\classes\client cp client\Pi.class c:\home\jones\public_html\classes\client I have tried the exact command … |
| | Hello, I am currently using jtatoo to improve the look and feel of my GUI. The thing is that sometimes it works perfectly while sometimes it does not. I don't get any errors and I think this might be a bug with it. Is someone here aware of how to … |
 | Hi guys. I decided to post this simple Photo viewer application. Its strictly for beginners, and cab be improved. /** * * @author Neon Tetras */ import java.awt.Image; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; import javax.swing.ImageIcon; public class ImageViewer extends javax.swing.JFrame { /** * Class constructor: ImageViewer */ public ImageViewer() … |
| | i want to convert the value of my date into an integer value, i am using a jDateChooser in netbeans(swings) currently in my code below the value for inputDate is fixed or assingned but i want it to be based on the date a user picks using the jDateChooser. public … |
| | I followed this code im new to programing and i wanted to make someones elses program then chnage it to my liking, i finesd the code and i tryed running it and all it send in the console was "<terminated> Main[Java Application] C:/Program Files(86x)/java/jre7/bin/javaw.exe (Nov 19, 2013 11:15:54: PM)" the … |
| | How can I write a program that reads in a bar code (with : denoting half bars and | denoting full bars) and prints out the zip code it represents. Print an error message if the bar code is not correct. Once again I am very new to java and … |
 | Hi Dw This is my second time asking this question but now I will just make it straight forward because I didn't get any response from my other question. I want to know how can I write a program or a script in java that will be burnt/embedded to a …  |
| | Hi all - I need to write a program that reads in an array of strings from a file and uses a radixSort method to sort and print the array based on what characters they are composed of. The implementation should be able to handle strings of characters. The characters … |
| | Dear Team, I am Using Eclipse to Run my java programs. But when I try to run a Simple hello world program from Command prompt, I get the below error "Could not find or load main class Test" Test.class resides inside C:\ I Went inside C:\ in Cmd and typed … |
| | write the psuedocode for a computer program that computes the sum of the numbers on the diagonal of a 10 x 10 integer array named *numbers*. Here is what i got but i'm not sure: int SIZE = 10; int [ ] numbers = new int[SIZE] [SIZE]; for (int I …  |
| | So I just began a college course in Java, and our first assignment was to write a text-based Mastermind game in Java. I was able to lay out all the necessary framework, but the area that still has me in a fix is getting the computer to check the secret …  |
 | Hai everyone, i have a problem, currently i am developing software using Java (netbeans): Currently my database looked like this: Username and UserType Fuhans and Administrator Nies and Member When i login with Username: Nies The program respond, but it gave me the dialog box where both Username are displayed. … |
 | Hi I am creating a java applet for an assignment, but if hit a snag. I have had to create a sales table for different sales people. I have made it that people can click "sales person 1" and it will display his sales. The issue is when you click … |
| | I am trying to create a menu GUI. I am having problems with the action listeners Any help would be great. Thanks Write an GUI application that display a menu system. The menu system should allow the user to select one package, one phone, and any of the options desired. … |
| | First time posting, so if I have formatting problems I'm sorry int randNum=0; Scanner in= new Scanner (System.in); Random randNumlist= new Random(); System.out.println("lowercase letters [a]"); String input= in.next(); System.out.println(" how many letters max 14"); int input2=in.nextInt(); if ( input.equalsIgnoreCase("A")) while( !(randNum>= (char)97 && randNum<= (char)122)) { for (int n=1; n … |
| | Hi Dw There is a project I'm doing but I'm doing it in VB.NET I want to know now how can I write a program in jave that will govern the CD-RW and if the disc is inserted on let say a DVD player the program will detect that the … |
| | So I have to make a code that asks the user how many times it wants the word "nonsense" to be printed on a new line, I managed to get it to work but its reverse, if i write 100 it prints once and 1 it prints hundred times, how … |
| | Dear i want to make a program i which when Pressed UP Arrow key cicle start moving up and when pressed DOWM key circle moves Downword Similarly left and right i have draw circle and also implements Key Listner and can anyone give me ideo how i do this task … |
 | So, this code is giving me some errors, any idea? private void pintarMobs() { JButton boton = null; Component[] botones = pnCastillo.getComponents(); for (Component c: botones){ boton = (JButton) c; int ac = Integer.parseInt(boton.getActionCommand()); int a = 0; Random r = new Random(); String foto = null; if( ac != … |
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