36,051 Topics
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 | I cannot for the life of me get my GUI to comeup with my deckPanel displayed along with my JButton that I intented to add an Action Listener to. THanks for looking. I am sure it has something to do with my object creation and method calls. import javax.swing.*; import … |
 | I am having a problem completing my program. I am sure it is a simple mistake. My results look something like this How many students do you have? 2 How many Exam grades do you have? 4 Enter a score for student number: 1 98 Enter a score for student … |
| | Hi I want to count the number of occurence of each characters in a string from a client then the server will compute the occurences and pass back to the client the result.You may have noticed that I used String for result coz im planning to send a string to … |
 | i want to make required field validator in java netbeans on textfield and press button if textfield null or example the textfield required string no integer how do it  |
| | I'm trying to learn about ANNs. If anyone can tell me my understanding is correct that'd be fantastic. So if an ANN was to be used for an image classification task - white background with a black alphabetic character written on it. The inputs are each pixel. What I believe … |
| | interface Interface1 { public int method1(); public int method2(); } public class Salary implements Interface1 { public static void main(String args[]) { int sa[]=Integer.parseInt(arg[0]); float pf,hra,da,tax,net; public int method1() { System.out.println("salary="+sa); try{ if(sa>250000) { pf=sa*5/100; hra=sa*10/100; da=sa*8/100; tax=sa*10/100; net=sa+tax; System.out.println("Net salary of an employee"+net); } } catch(Exception e) { System.out.println("I/O … |
| | How to play mp3 files in java using eclipse?  |
| | Hi, I am writing the content of a long text file in pdf using PDFbox API in java but only half the page I am able to write please assit me with it asap here is my code: import java.io.IOException; import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.pdmodel.edit.PDPageContentStream; import org.apache.pdfbox.pdmodel.font.PDType1Font; import org.apache.pdfbox.pdmodel.font.PDFont; … |
| | Hello, I am getting the error: "Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:15" There is definetly something I am doing wrong but I cannot figure out what. Any help will be appreciated. The error in the output is poiinting to line 119; if(R[currentState][action] > -1){. I tried to change this but no … |
| | I need help regarding with the computation of what the user order it seems that the options doesn't have a value to be computed please help me how to put values in every options and one more thing is i need help with the codes for the checkbox for additional … |
| | I am trying to add some text in to a page by using a textarea where text is entered the text gets saved in to a database after clicking on a add button on a page. However, I am unable to achieve this after trying. I have two tables matchreportcomments … |
| | Need to write a program that will print two patterns: 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 4 5 6 and 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 …  |
| | hi all, i want to create a program that transmit voice something like skype but i have a problem , there some basics like how to get the voice and how to send it i found source code but i did not understand it. thanks in advance. |
 | I want to code a client server program using socket programming in which the server returns the client's network information back to the client. |
 | I want to make a project on online examination which have some similar view like amcat and also have a view which run programs online.  |
| | I am able to write a java program to access a particular url , and get the data , but the data is in raw format and the complete source is printed in the terminal . import java.net.*; import java.io.*; public class URLConnectionReader { public static void main(String[] args) throws … |
| | 1. A company wants to transmit data over the telephone. All of the data are transmitted as four-digit integers. The company has asked you to write a program that encrypts the data so that it can be transmitted more securely. Your program should read a four-digit integer and encrypt it …  |
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 | Hi Friends, Please share your's experience about best supporting programming language for BigData & Hadoop. I'm also doing some research about this topic plz contribute your idea & experience for this topic. Regards, Rupesh |
| | I know very little aboout coding and less of Java Logic says I should be able to do something like this: int i; String taxFileNumber; System.out.printf(" Enter Tax File Number (TFN): "); for(i = 0; i < TFN_SIZE; i++) { if(i == 3 || i == 7) { taxFileNumber.charAt(i) = … |
| | Hey friends, i have just started with my java classes but im finding it quick tricky so is there any books availabe for dummies  |
| | Is it possible to call repaint() inside the main()?I have tried the code below.But its not working public mypanel() { initComponents(); repaint(100,150,40,40); } protected void paintComponent(final Graphics g) { final Graphics2D g2 = (Graphics2D)jLabel2.getGraphics(); g2.drawRect(100,150,40,40); } //above code doesnt provide any output private void formMouseClicked(java.awt.event.MouseEvent evt) { repaint(100,150,40,40) } this … |
| | i am pursuing engg. (3rd year).i want some suggestion regarding my minor project.My proofesors want some unique point in my project so suujest me some project with unique in that. |
| | Hi, We are facing font issue in our java swing application in linux. Kindly help to solve issue. In our application we are explicity setting font as 'Arial' for labels and others in swing Application. Since Arial is not available in linux so it picks 'Lucida Sans Regular' as default … |
 | Hi everyone My code is still a bit messy as I;m pressed for time. I have to write a simple game you play against the computer. I have my StartGUI class which instantiates the GUI and then I have a Game of Life class, which does not have a JFrame, … |
| | Write a program that will allow tutors to record tutoring activities. A tutor needs to keep track of who come for help (name, student ID), started at what time (sign-in time), ended at what time (sign-out time), for what course, his/her professor name, a short description of the problems he/she … |
| | I'm working on what I thought was a straightforward program to accept user inputs and store them in an ArrayList. I created a separate class containing an object and a constructor (first name, last name, and an integer). In the main method, I prompt the user for input within a …  |
| | Hi All, I am learning Multithreading in Java and came across this code using SwingWorker for GUI multithreading. Here is the modified code done by me. import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.List; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.SwingWorker; public class MainFrame extends JFrame { … |
| | So basically I am writing a tic tac toe program in java which is peer to peer using tcp sockets. The data I am transferring has to be encrypted and checksummed. I know how to implement both, yet I do not know in what order to do it in. Should … |
| | I need the code for this Pseudocode AccountBalance Begin Get starting balance Get withdrawal amount If withdrawal amount > starting balance Then Display “Insufficient funds” Else final balance – starting balance – withdrawal amount Display “saving account balance is low End If End |
 | Hi everybody, I'm back and I bring problems. :D I've done a fair bit of research - I know Android can't run JRE 1.7, and I know JRE 1.7 is needed to get Java to read SQL. I've got this project that says I need to make a way for … |
 | I am trying to get my method to return to the main. I have tried return statements but when i run it all it gives me is nothing. It just follows what the main method has but the other methods do not get to return to the main method so … |
| | So, I am trying to test my if else with two Character.toUpperCase answers and I keep getting this error: 1 error found Error: bad operand types for binary operator '^' first type: char second type: boolean I tried && and & and it won't work. If I don't use anything … |
| | I was following along to the following tutorial - [Derek Banas Java tutorial 18 - Threads pt2](http://www.youtube.com/watch?v=G2Xd5avyk_0) and as I decided to go over his tutorial series by following along in notepad++ and compiling with the command line, so that I can experiment and test things I'm unsure about, I … |
| | Hi all I am writing a java program to display the dob of sportsperson, now I have use the java.util.Date to display the date on to the consloe. But since it is deprecated I wish to use some other method to get and display the date from the user. Here … |
 | if input is given like (5,4,6,3) it returns 4,5,3,6 but i want it to return like 3,4,5,6....kindly help. import java.util.Scanner; public class sort { public static void main(String args[]) { int rows; int cols; Scanner input = new Scanner(System.in); System.out.println("Enter number of rows u want in matrix "); rows=input.nextInt(); System.out.println("Enter … |
| | how to write code in java this statm if public String pass (){ b =txt_pass.getText(); if ("ameer".equals(b)) JOptionPane.showMessageDialog(null, "the password is correct"); return b; } how to make this **if (user ()) retrun a ** JOptionPane.showMessageDialog(null, "the password is correct"); |
| | can any one explain about the below code which is Dining Philosophers Problem.. [CODE] //Dining Philosophers Problem import java.util.Random; class Monitor { int phil_States[] = new int[5]; // 0=not_waiting, 1=waiting // 2=eating boolean fork_States[] = new boolean[5]; // false = in use, true = free Monitor() { // constructor for(int … |
| | Hi. I am making a program and I started at the first example for sphinx 4. I can't even run the program becouse I get an error:new ConfigurationManager(args [0]) so I can't even run the program. Please help. Here is my code: import java.net.URL; import com.sun.speech.freetts.Voice; import com.sun.speech.freetts.VoiceManager; import edu.cmu.sphinx.frontend.util.Microphone; … |
| | how to reduce memory usage of java application...it takes 18 mb memory when started,when i starts new thread it takes 47 mb of memory .After i closed the started thread ,the memory is not reduced to 18 mb. It still stays at 47mb of memory usage. |
| | I am getting a very mysterious bug when I run my java website in Browser Mode: IE9 Compatibility View - the sessions stop working and I have no idea why. I don't think there is a tag or any code that I can include in my website that can force … |
 | import javax.swing.JOptionPane; public class Hotel626 extends javax.swing.JFrame { public Hotel626() { initComponents(); } @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code"> private void initComponents() { jLabel2 = new javax.swing.JLabel(); jButton1 = new javax.swing.JButton(); jButton2 = new javax.swing.JButton(); jProgressBar1 = new javax.swing.JProgressBar(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR)); setResizable(false); jLabel2.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Pic/Entrace.jpg"))); // NOI18N jButton1.setBackground(new java.awt.Color(0, 0, … |
| | ATM -Deposit -withdraw(5 times maximum per day) -maintaning balance 200 -maximum withrdaw 20,000 -Default Amount 50,000 help me :( |
| | Hello everyone. I have created a class in Java named Farm which contains a list of animals(cow,pig and chick). myFarm is an array of object of Farm class containing objects of NamedCow,pig and chick class. I have not understand one line in my code: NamedCow named = (NamedCow)myFarm.get(0); here what … |
| | I've recently become interested in trying to adapt my Rock-Paper-Scissors game into a multiplayer-friendly program, so today I decided I'd look up a tutorial on servers. It seems I'm following it precisely (aside from using a different IDE). However, something is going wrong and I'm not sure exactly what it … |
 | Hi everone, Currently i am working on an Pharmacy management project in MVC2 model i have written an servlet code to fetch,insert,update,delete MySQL table contents from the JSP page but my problem is i could insert the data successfully but i am failing at Update and delete here is my … |
 | Just wanted other opinions on my code and a way to figure out whether or not each number placed into the 2D array is unique. My mind is blanking out a bit, I placed something in the method before but erased it. Debating on whether the parameters should simply be … |
| | Using the easysoft JDBC-ODBC bridge to connect to an Access DB. Has been working great since CF6. Currently no issues on CF9(solaris). We're working to upgrade our servers to CF10 on Redhat and have everything working except when we attemtp to verify our data sources that use this driver we … |
| | i triyed to learnJava programming using netbeans, what kind of a book do you think i can use to be highly educated with programming in java  |
| | Hi ! I am new to JSP. I want 2 create 2 dynamic related combobox that pull values from database. I took the help from this link: dynamically populate the city combo box based on the values of state combo +ajax+jsp. It runs fine but if there are special characters … |
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