36,051 Topics
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| | A web server is used to process http request and send a response back to the client browser. I was wondering how does a client browser send a http request to the web server? Is it done via socket connection? Which socket connection is used to establish a connection with …  |
| | Hello i want to encrypt or hash some data and put them on the database. Which is more secure encryption or hash and how i can do this? thank you very much for your help |
 | HI I was wondering if you can help me with this random number program. import static java.lang.System.out; import java.util.Scanner; import java.util.Random; class GuessAgain { public static void main(String args[]) { Scanner myScanner = new Scanner(System.in); int numGuesses = 0; int randomNumber = new Random().nextInt(10) + 1; out.println(" ************ "); out.println("Welcome … |
| | ["Objects that are instances of an inner class exist within an instance of the outer class"](http://docs.oracle.com/javase/tutorial/java/javaOO/nested.html) Even though I attempt to create an independent instantiation of the inner class, the outer class is always there because of the statement above. ##Is that ture? If true, then that would also mean … |
| | Hi can you help me please how can i change the color of progressbar or just look like in windows xp progress bar...please help me...thank you in advance hoping for your positive responds... |
| | Hi, My below code is working only if there is a single row. could you please help me in doing it for all the rows retrieved from the database. view plaincopy to clipboardprint? <%@page import="java.util.concurrent.CountDownLatch"%> <%@include file="DBCon.jsp" %> <html> <head><script type="text/javascript"> function invoke(but) { if(but==5) { document.abc.action="Users_2.jsp"; } else if(but==6) … |
| | I am trying to get the ItemListener to work on this program. I keep getting an error that says the method getSelectedItem cannont be found and cannot figure out how to fix it. import java.awt.*; import java.awt.event.*; public class Buttons extends Frame implements ActionListener, ItemListener { public Buttons() { //set … |
| | How to add css to all jsps in java web project. Is it possible using web.xml ? |
| | Hi All I am new to java. I am facing a problem I want to compare a string to a set of strings, For example there is variable string x, If the value String X matches to String A , String B, String C then run the particular code otherwise … |
| | Hi I am currently working on a project where I have to find the most frequently occurring word in an imported file. I have imported the file and can display what it says, but Im having trouble with this part: [COLOR="Green"]"Create a Word class that has a string and a …  |
| | this program is 2 classes and it has 2 JLabels, 2 JTextFileds, and 2 JButtons... it convert temperatures from Fahrenheit to Celsius and from Celsius to Fahrenheit.. Class 1: [code] // Author: Helen Toma import java.awt.BorderLayout; import java.awt.FlowLayout; import java.awt.GridLayout; import javax.swing.JTextField; import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; … |
| | I develop a project that consist of many tables. In admin menu table names shows dynamically in a dropdownlist from a database. Pls help me to do this |
| | Hi folks.. I had a problem and looking for the answer..The exact question of mine is [this](http://webapps.stackexchange.com/questions/18959/can-i-form-a-direct-url-to-a-particular-gmail-account) Sorry that i dint typed the entire question here but i'm afraid that i may not able to explain well if I type that entire thing. But that was my exact question which … |
| | i'm trying to modify a java code. I have a jSpinner where the user have to choose a number like minimum 0 and after this step the user can continue by clicking the OK button and continue his steps... So here what i want is when the user didn't enter … |
| | Hi, i try to handle a Neagtive number exception in my code. i tried this but it shows "illegal start of type" why please? Here is my code: public class JPanelTemporal extends javax.swing.JPanel { public JPanelTemporal() { initComponents(); } public void setDuration(int duration){ this.jSpinnerDuration.setValue(duration); } public Time getTime(){ Time time … |
 | Hi, I've been given an assignment to write a java program that determines if a random given number is Prime OR not. But we also have to make comments in each lines, explaining the function/purpose of each lines to this java coding. So far, I've gotten the program corrected! All … |
| | hi folks,basically i am facing a problem importing a package, dir structure is like src |---com |---example |---model |---BeerExpert.java package com.example.model; import java.util.*; public class BeerExpert { public List getBrands(String color) { //code goes here } } src |---com |---example |---web |---BeerSelect.java now in BeerSelect.java i am importing the BeerSelect … |
| | Can anyone help me in my Java assignment ? Due date on 28/11/2012  |
| | Hi, I am currently making an assigment for JAVA but I am stuck. I have to make a birthdate from the three parameters: day, month and year, which are numbers = int. With this I have to put in some checks for valid dates. That part I think is done, … |
| | Hi there I am reading some java tutorial and a have a question about these 2 classes java.util.Scanner; javax.swing.JOptionPane; In the tutorial I am looking at the 2 classes are used in separate programs to get the input from a user With the first class http://www.homeandlearn.co.uk/java/user_input.html after importing the class … |
| | I am having some trouble with a gcd program that I have created. My problem is that my output is not formatted correctly, and I believe that I need to use arrays to print it out correctly. THe format for the output is: Num1 Num2 GCD Num1 Num2 GCD for …  |
| | I am trying to understand how packages work. I think I have finished steps 1-7 but I am not sure. Now I am trying to start step 8 however I am confused as to how I can get the Test class to use the squar and cube classes. How does … |
| | I need help doing this assignment. Here are the instructions: **5.06 Assignment Instructions – Bottle Cap Prize** **Instructions:** Write a program that uses the Monte Carlo sampling method to estimate the average number of bottles of e-Boost someone would have to drink to win a prize. There is a 1 … |
| | I created a JTree from an XML file like this: //Load Tree from XML file File stocks = new File("//Users/scott/Desktop/saSample.xml"); DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance(); DocumentBuilder dBuilder = dbFactory.newDocumentBuilder(); doc = dBuilder.parse(stocks); doc.getDocumentElement().normalize(); // Set root folder DefaultMutableTreeNode rootnode = new DefaultMutableTreeNode(doc.getDocumentElement().getAttribute("saName")); DefaultTreeModel treeModel = new DefaultTreeModel(rootnode); objMgrTree.setModel(treeModel); // Set Pages … |
| | Hey quick question..I have a file..have decoded it..but in order to work out the file contains..I was asked to use brute force..I have entered all the keys (0-255) but not one of them give me a decent outcome..I hope this makes sense..this was done in java..(its for a coursework) I … |
| | Hi.. I am working with netbeans for making my desktop application (swings).. I want to edit my frame (like setting icon to the Jframe , etc ) but i couldn't able to do so. This auto-generated code in netbeans really sucks. I cant see where the jframe object is created … |
| | Hello, is it possible to display an Error message when we enter a number in jSpinner. I tried this, in Netbeans i right-clicked the jSpinner , then go to -Properties -tooltiptext and write Range 1 to 200 -Model i choose the spinnermodel/Spinner Model Editor/Model type = number model properties = … |
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| | I'm having trouble with this assignment: Write a class Coins with one constructor that takes a number of cents as a parameter. Supply four public methods, getQuarters, getNickels, getDimes, getPennies, that return the number of corresponding coins that add up to the amount (in the optimal representation with the smallest … |
| | So this is going to be the last project for my java class. Any input is appreciated and I'm generally posting it here because someone else might benefit from it. It is not done yet but when it is I'm going to post the full code. I made a video … |
| | This program asks the user to enter pricer for items. The user enters a price of 0 to stop. The program then prints a reciept including a list of items bought arranged from least to most expensive, and a total that includes 5% sales tax. I am lost can anyone …  |
| | how to fix animation flickering import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import javax.swing.JApplet; public class main extends JApplet implements Runnable { //player information variable int x = 10; int y = 50; int width = 30; int height = 30; int dx = 1; //########################################################################################################### /*** init method ***/ public … |
| | Hi everyone, I have many executable files which I developed using java language(netbeans platform), which all run at the same time 24 hrs, the problem is that I can't know which one is for which program in the task manager, process tab, because they all have the name of javaw, … |
| | Hi. I am trying to write a function that when given a class, will tell you the number of methods that class has. I am getting the java.lang.noclassfoundexception message. I read something about adding to the PATH but was unsure. I also tried using HelloWorld.class, but that did not work … |
 | i didn't know how to add this functionality. anyone can help me.thanks for sharing. |
 | Hello daniweb community ! I'm finishing my second year of IT studies and the university is giving us the opportunity to engage in a project with a company. I found a good company but now i'm looking for a good project to work on. I was thinking doing something in … |
| | Hello, I want to delete duplicate in the array I have created, I have the following method now: Add an element Remove an element Can you give me an idea of how I can implement the deleteduplicates method. Thanks |
| | I wanted to convert this segment of code into something slightly different package expression; import java.util.*; public class Expression{ /* * Strings used for storing expression. */ String s, x; /* * Term evaluator for number literals. */ double term(){ double ans = 0; StringBuffer temp = new StringBuffer(); while( … |
 | alright, I have been aware of private, protected, and public access modifiers but just this week I discovered that there is also the default access modifier in Java. In case none of the three p-- modifiers is mentioned in a method header or field declaration, they seem to have the … |
| | i am creating a rect in paint method. and i am trying to move it to its right by 1 px in loop. but the problem is its not going inside the run method. any idea why? import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import javax.swing.JApplet; public class main extends JApplet … |
| | Hello, I have an assignment for class where I have to write an apple that uses a trip time calculator. I have the following codes but cannot get the applet to run properly. Help is appreciated. Thanks. import javax.swing.*; import java.awt.*; import java.awt.event.*; public class TripComputerApplication extends JFrame implements ActionListener … |
| | Hello all, I was wondering if there was a way to add cover art to an mp3 file using Java? I'm fine using 3rd party libraries. I have been using JID3(http://jid3.blinkenlights.org/) to add and edit ID3 tags of mp3 files but can't seem to find a way to add cover … |
| | I need to design a class called Building that represents a drawing of a building(the parameters to the constructor should be the building's height and width). I need to color the buildings black with a few random windows colored yellow. Then I need to make an applet that draws a … |
 | Hello everyone, I have a little question regarding a project for my class. We are making a tower defense game with ants and zombies objects for our project. My question is with this piece of code provided to us. /** * Callback invoked when the player attempts to recruit an … |
| | Hello everybody, this is the first time I'm going to create a real-life JAR, so maybe a bit stupid question but I'm totally out of ideas here... Okay, I have a project named WiWClient which depends on other project named common and requires libraries from lib (there are like 20 … |
 | Pls.. Someone help me on how to display in JLabel the product with two decimal places after I click a button.. pls. help I am new in making a swing program |
| | Hi Guys, I'm new to Java and hoping someone can help me with this code. I started to work on this exercise to create a calculator app, and Im really stuck on two things: 1. NumberFormatExeption - NetBeans IDE keep show me this error: }catch(NumberFormatExeption e){ required: Throwable found: NumberFormatExeption … |
| | I need to design an application that makes a histogram that visually shows the distribution of a set of numbers. It has to read in numbers 1-100 and then produce a chart which labels how many of each number is input. So if my input is 1, 23, 17, 13, … |
| | Hi everyone, I need some help with my homework. I checked online and found loads of results but didnt understand much. I need to submit hw by tomm nyt .. 27hrs from now. Please help me if you can plz .. Here is my code snippet public static void main(String[] … |
 | Hello good day. I have a quick question is anyone able to assist me in saving a password file. I encrypted my password and so I want to save the salt and the encrypted password(which are byte arrays). I tried using a properties file, but I soon found out that … |
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