36,051 Topics
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| | I was wondering which language should learn. I do not want to be a programmer for a job(at the moment I am a young teen) in the future, I would like to be a physicist. In the meantime though I would like to learn a programming language. I want to …  |
| | I am going to do my first Java Project the ElGamal's Encryption. Honestly, i have no idea yet on how to start my program because i don't have idea in encryption but i have to do it. Because it was assigned to me by our instructor. Please help me. |
| | I recall back in school we worked on a small program for database management and we wrote a method which contained instructions for establishing a connection. Connection con(){} con(); // Would return an open connection Can this be applied to JFrame ? For instance i am making a 800x600 GUI … |
| | Hello, I need some opinions about my project development and studies. My project is entitled Voice E-mail, in which I create an email client server while using the TTS to read the message content aloud. I'm having second thoughts of using NetBeans, since I'm not really good at Java. Is … |
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| | In my final year project I have to build an Algorithm animator. It would be done to show how the algo works using nodes(PCs) and edges(connections). For example, how the leader ellection ring algo works. Anyway, I haven't started implementing yet. My supervisor wants me to do it as a … |
| | hello, i just want to know what is the need that we make a custom tag...i know that its for reusebility..but i want some examples where should i use them. thanks |
| | The original question I posted on Yahoo Answers: [url]http://answers.yahoo.com/question/index;_ylt=Au6uML15p1p500urP_yfL9fsy6IX;_ylv=3?qid=20111002100030AAILsNC[/url] I can't get this code to return anything: In NewVector.java: a class that extends Vector: [code]public Object getSmallest() { Object obj = elementData[0]; try { String a = (String)elementData[0]; for(int i=1;i<elementCount;i++) { String b = (String)elementData[i]; if(a.compareTo(b)>0) { a = b; … |
 | what's wrong with my code? i'm new to java, can someone help me? the data is not showing. [CODE] public class GUI { private static JTextField fname = null; private static JTextField lname = null; private static JTextField search = null; private JPanel panel = null; private JPanel tablePanel = … |
| | I implore you to ignore the poor formatting, ignore the overall functionality even; my problem lies with trying to call the Scanner scan within flow method from readBoolean and readBoolean2D methods. It says it cannot find variable scan. How can I access this variable? [CODE] import java.util.*; import java.io.*; public …  |
| | i have a csv(excel outputted) file and i have loaded all the data into an array, and i want to know how to use the array to search the data in the array using binary search tree. any ideas on how to do this?? i have made a binary search … |
| | import java.awt.*; import java.awt.image.*; import java.awt.geom.*; import java.lang.Exception.*; import java.io.*; import javax.imageio.*; import javax.imageio.ImageIO; import java.net.*; import java.net.MalformedURLException; class Blur1 { public static void main ( String [] args) { float[] matrix = {0.111f, 0.111f, 0.111f, 0.111f, 0.111f, 0.111f, 0.111f, 0.111f, 0.111f, }; BufferedImage sourceImage = null; try { URL …  |
 | Hi all, can any one tell me how to find unique values in array list? Thanks in advance.. |
| | I wanted to create this program which lets the user choose from the 4 number systems, binary,decimal,hexadecimal, and octal. inputs a number for the chosen number system, then converts it to the other three number systems. Help anyone? |
| | Hi guys, This code has been on my back since a few days now and I kinda need help on it ASAP. Basically what I wanna do is use PipedInputStream and PipedOutputStream to accurately time thread create operations. So I have to calculate System.nanoTime() in the run() method of the … |
| | I cannot get past this error. I had taken out the dataSort method which allowed it to compile, however I need the data to sort for my assignment. When it compiled the data was not passing through my constructors, I got no data output. Any assistance is greatly appreciated . …  |
| | I recently hired a freelancer to validate all the code for my Wordpress e-commerce website ([url]http://www.projectdisobey.com/disobeyclothing[/url]) He told me that he had finished validating everything, but when I tested each page out using the validation service at [url]http://validator.w3.org/[/url], I came across a whole load of validation errors ([url]http://imageshack.us/f/836/validationerrors.jpg/[/url]). I notified … |
| | [CODE]public class cation { public static void main(String[] args) { new cation().run(); } public void run(){ harada hara=new harada(); insert(hara); insert(hara); } public void insert(harada hara){ if(hara.left==null){ hara.left=new harada(); } else{ insert(hara.left); } } class harada{ harada left; public harada(){} } } [/CODE] Can someone please explain, recursion in objects … |
| | heres's my code : [CODE]/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package javaapplication11; import java.awt.*; import java.awt.event.*; import javax.swing.*; /** * * @author Jayson Jude */ public class JavaApplication11 implements ActionListener { private JFrame window = new JFrame("Tic-Tac-Toe"); … |
| | So I am supposed to write a class that converts fahrenheit to celsius (& vice versa), calculates the volume of a sphere after a radius is entered, and calculates the hypotenuse of a right triangle, all using nothing but static methods. Here is what I have so far; [CODE]class Fun …  |
| | can you urgently suggest codes for me its proxy cache/ http request and response plz |
| | Hi all, I am doing my second year undergraduate and I have a new project which is due in 10 days. I wanted to create an Online Bookstore project using JSP. *** I haven't used JSP before and also I wanted it to run in Linux system. So everything is … |
| | [CODE] import java.io.*; public class CheckersGame { public static void main (String []args) throws IOException { BufferedReader jill = new BufferedReader (new InputStreamReader (System.in)); System.out.print("Enter name of the first to move: "); String name = jill.readLine(); System.out.print("Enter name of " + name + "'s opponent: "); String opo = jill.readLine(); … |
| | So the prelab for my CSE class asks Your assignment in version 1 is to write a Java program that lets you select six lottery numbers. For this version, you can accept any six values including duplicates. Your program must have the following elements: - Create a class named Lottery1 …  |
| | hello all I found the sample code ,but do not understand how the author found the value of width and height in the frame,anyone can tell me ? frame.setSize(120, 285); According to my count the value must be : frame.setSize(110,250); thank you denny [code]import javax.swing.*; import java.awt.Color; public class Traffic_Lights{ … |
| | Hi there, I have a dynamic programming problem and I have NO idea where to start. You are given an input of integers and mathematical expressions. For example, you are given: 5 + 3 * 2. The program processes this input. It ignores the BEDMAS rules, and returns the highest … |
| | Holler fellow programmers I have an error that's been bugging me for almost a day now: I keep getting 14 of this error: class, interface, or enum expected Yes, 14 different exact same error message basically for every line of code in the inputGetter method below. Can someone please help... … |
| | Hello forum: I have to set the position of 4 labels, though in this example I'm only starting with one. for some reason even though I do setLocation(40,50) it is not working. Any ideas? The code of the small part ; If you guys want the entire program Ill post … |
| | Hi, I'm using JasperReports in netbeans, on Ubuntu. When I execute my java application on netbeans I have no problem saving the reports, but when I clean and build the program, and run it from the .jar, the program can't save the reports. I don't know if that's because of … |
| | I need to write a program transfer huge amount of files(60 GB) from my application server running on hp-unix to a remote PC . I haven't worked in hp-unix before. 1.Is it possible to run a sshd server using some shell command in hp unix and connect to the sshd … |
| | I want to know how to read a file in Java and then store the file contents into a String object...like String[] content= file contents?? here's the code of reading a file and i want the contents to be stored in a string variable... [CODE]public static void main(String[] args) throws … |
| | hi i am work on my graduation project in java using borland jbulider 7 and windows 7 but now when i run the program it doesnot work correctly the component need so many time to apper i will be thankful for any help thanks |
| | hello friends i am new to ejb and i tried to create a session bean for obtaining JDBC Connection,and i called it from a servlet the session bean was a remote session bean but connection is not getting established.. EJB CODE : ConnectionBean.java [CODE] package com.ejb; import java.sql.Connection; import java.sql.DriverManager; … |
| | Hi guys. I am getting the error: LoanProgram.java:17: variable payment might not have been initialized payment = getPayment (amount, rate, years, months, payment); I am stumped, and the lab is due tomorrow. If anyone could help me out I would greatly appreciate it. :) I'll put an asterisk on the … |
| | can anyone tell me how to extract bmp picture frames from a a video file..... and also the reverse process i.e bmp files back to video files...... when i googled i got several stuffs regarding extraction of image files from video file using c#, is there any method in java..... |
| | i want to make a menubar similar to that of MS OFfice. I have downloaded some Executable JAR files that tells me they can help me, but as I run the codes, nothing happens. Can you please teach me how make a ribbon menu bar.? or give me a link … |
| | Hi, I was preparing for SCJP 1.6 and i have the following snippet of code. [CODE]package com.self.trials3; public class Animal { public void Animal(){ System.out.println("Obviously Works"); } Animal(){ //System.out.println("Constructor"); //super();use super or this() as first line in your cons to call other //cons. this("Adarsh"); } Animal(String AnimalName){ //System.out.println("AnimalName >> "+ … |
| | Hi!(: Sorry, I'm totally new and have no real idea about what I'm supposed to tell you. I just really need some help on my java homework so anything would be much appreciated. (: I feel like I'm already asking for so much.. so I'm really sorry, but can someone … |
| | i have a game that i made [url]www.thenewedinburg.com/obstacles.html[/url] at the end i would like to ask the user to input his name and that name to be saved in a .txt file that is stored in the webpage like for example [url]www.thenewedinburg.com/savename.txt[/url] so that any user that plays and gets … |
 | I realize this will very likely be a short thread, but it is a question that has been eating at me for a while. I have just started taking a Java class (basic introduction) and so far I am loving it. Primarily I am a web programmer, so the only … |
| | I'm having a severe brain drain moment and can't figure out how to validate user input? I need to make sure that it is an int and it is greater than 2. And I need it to loop until the user meets those requirements. I tried a try-catch block but … |
| | Hey guys, I'm working on an entry level java programming assignment and I'm running into some trouble. I've attached 3 java files and will quote the problem below. If anyone can point me into the right direction I would really appreciate it. Thanks! I'm fairly sure the code needs to … |
| | I am working on part five of the Farmers Market program and am ready to pull my hair out. Not getting much help from the instructor either. here is the code [code] /* * To change this template, choose Tools | Templates * and open the template in the editor. … |
| | can anyone tell me how to read and edit video or image file properties through java  |
| | I keep getting a stackOverflow error in my quickSort and I can not figure out why. Any help would be greatly appreciated!! [CODE] private static void quickSortRecPriv(int[] arr, int first, int last, int ps) { int pivot = arr[first]; int left = first; int right = last; if (arr == … |
| | Design a cashier change maker that will take as input: a floating point value. Value: "change due" and will convert it to proper currency (from $20 down to pennies) amounts to be handed as change to the customer i am not sure how to use the rounding correctly every time … |
 | I am trying out something new and I am wondering if this is valid and is not working because of some other code glitch. Graphics class: [CODE]import java.awt.*; import javax.swing.JPanel; public class Drawing extends JPanel{ KeyCommands kc = new KeyCommands (); public void startGraphics (){ System.out.println ("Adding KeyListener"); addKeyListener (kc); … |
| | i have code like this in page1.jsp <%@page contentType="text/html" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %> <html xmlns="http://www.w3.org/1999/xhtml"> <body> <h1>Test</h1> <script language="javascript"> function JSGetSelectedItem() { var dropdownIndex = document.getElementById('lang').selectedIndex; var dropdownValue = document.getElementById('lang')[dropdownIndex].text; alert("Hello JSCript " + dropdownValue); } </script> <!-- to fill combobox i had get from … |
 | is possible to work of return statement with Math Class? eg, [CODE]return Math.pow(2,2);[/CODE] |
| | Hello I have a problem how to make custom defined text area it's similar to text area which you can create in Photoshop while you wan't type any text. Is it possible to do it in swing ? |
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