36,051 Topics
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 | Hello I am using jxls quite fine. I'm sort of on my last lap with exporting my data to a file. However all I want to know is, how do I display my collection in the same row please? I've manage to do this downwards in the same column, but … |
| | Hi i need your help please I am still learning android...i don't know this error "at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1133)"... can you help me how to solve this. Thank you.  |
| | My teamate and i are looking into how to: The application did not work as required. There was a package statement; (-2) Even though you caught the exception, the incorrect donation should not be printed out to the JtextArea. (-2) I would also work on appending to the text area … |
| | When we create an object how much memory will be allocated to it ? Is memory allocated for methods too ? If Yes, How ?  |
| | Please any one can guide me how to write a [B] mysql database search[/B][I] in java....[/I] I want to search mysql database for some data in keywords. please help... thnakx |
 | Hi, I have a java class that is being used by multiple people (from a UI). In the class i have a static HashMap with the userKey as the map key and an arraylist with data pertaining to the user as the value. I am using this kind of like … |
 | I have problem with jinitiator. I am using Oracle ERP forms which runs on Jinitiator.When I access some other java applet application at the same time it runs in the JRE in and works fine. When I pass the same java applet application in ERP through a link , I …  |
| | Im trying to integrate my website with facebook so that users wont have to sign up. By just using their FB accounts, they can automatically be logged in, but im encountering an error: java.lang.NullPointerException at com.fblogin.CallbackServlet.doGet(CallbackServlet.java:86) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) … |
| | I want to connect my website with Facebook. I'd like my user to be able to login to my site without having to sign up. Jut by clicking the facebook logo, I will be able to fetch the data needed like their email, name, age, etc. I used **restFB** but, … |
| | Hello good day. I am trying to figure out if it is at all possible for me to do but I want to access the area that is outside the JScrollPane's view when my JFrame is resized. Let me explain; I have a LayeredPanewith two layers within a JscrollPane. The … |
| | This is my 10,000th post in the DaniWeb Java forum. so I hope I won't get an infraction for being off-topic. I just thought this would be the perfect opportunity to thank all the people who have helped to make this such a valuable and rewarding experience for me. I … |
| | How do I replace my android app Google maps radius circle with a blue translucent one as in image also blue marker with blue circle? I can make the circle have a particular outline and fill but it doesn't look anywhere near as nice as the one depicted in the … |
| | It compiles and runs fine, but when I run it it never ends. It keeps asking for a second integer. Here's the code. Scanner get = new Scanner ( System.in ); System.out.print( "Please enter first integer: " ); int value = get.nextInt(); int smallest = value; int largest = value; … |
| | I am to create a program which creates multiple threads, has them do work in parallel, and terminates when the last thread is finished, sounds simple right? Here is the curve... I am supposed to create thread objects using scanner input, and I am at a loss When I run … |
| | Hi, I have an application that has the feature to change the users with the click of a button. For the first attempt it works fine; it closes the JFrame and opens the login JFrame. However if the users clicks on the button to change user for the secound time, … |
| | Hello everyone, I'm about to develope a simple app for mobile and i want your help about how to make a code for sending the order of the selected items by SMS or E-mail to a sepcific cell number or E-mail after selecting the desired items clicking on the button … |
| | i have a problem with java.suppose there is any java project either database,or any api how to create A JAR FILE? because i made a project medical stores management in java & access .but i dont know how to create jar file for it from Shel  |
| | I understand how to create log in system in java netbean using sql , but how can I create log out button |
| | hi can any one help me in this.. i have a html/jsp form in that i have a field .. enter password... first time password will be stored in the databse... from second time when user enters passowrd wrongly for 3 times then it has to dispay some msg contact … |
 | Cannot get FXMLLoader to load this fxml. Error: Feb 19, 2014 11:25:01 PM com.github.geodox.goldminer.GoldMiner start SEVERE: null java.lang.NullPointerException: Location is required. at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2825) at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2809) at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2795) at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2782) at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2771) at com.github.geodox.goldminer.GoldMiner.start(GoldMiner.java:24) at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:319) at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:219) at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:182) at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:179) at java.security.AccessController.doPrivileged(Native Method) at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:179) at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:76) at com.sun.glass.ui.win.WinApplication._runLoop(Native … |
| | I already wrote code in ILOG CPLEX (CP) environment and now I want to write it in JAVA, Eclipse. Can you help me |
| | Use a two-dimensional array to solve the following problem. A company has four salespeople (1 to 4) who sell five different products (1 to 5). Once a day, each salesperson passes in a slip for each different type of product sold. Each slip contains the following: a) The salesperson number …  |
| | Hi. I have a JFrame with a JLayeredPane. On the first layer there is a table, then above it there is black transparent layer that allows me options and what-not. I animate the arrival of this transparent layer. However when I do this the panel seems to loose it's transparency, … |
 | I'm just starting my 2nd semester in Java. The project for the semester is: I have to create a EDUCATIONAL GAME or any SYSTEM using java. I am clueless what to decide to make. Please I need help ... I dont have enough Java knowledge and need the idea of … |
 | I am working on a project where you must first encrypt a sentence then decrypt it. the code that is used is: `import java.io.*;` `import java.util.*;` `public class Decryption `{` `public static void main(String args[]) `{` `Scanner kbReader = new Scanner(System.in); `System.out.print("Enter a sentence that is to be encrypted: "); … |
| | `final PerspectiveCamera camera = new PerspectiveCamera(true);` The constructor PerspectiveCamera(boolean) is undefined. http://download.java.net/jdk8/jfxdocs/javafx/scene/PerspectiveCamera.html Clearly says that it can accept a boolean for "verticalFieldOfView" Why is Java giving me this error? |
| | Hi Folks, I am new to java programming. I have an xml file <File> <XMLFile> <Type = "TypesFirst"> <myI>17</myInt> <myS>Type one</myS> <myD>3.14</myD> <myL>1212121</myL> <myC>D</myC> </Type> </XMLFile> <XMLFile> <Type = "TypesSecond"> <myI>17</myInt> <myS>Type two</myS> <myF>7.14</myF> <myL>121456</myL> <myC>D</myC> </Type> </XMLFile> </File> So I have to deserialize this file in such a way … |
| | I suppose to write a Java program using array and method follows: It reads a sequence of strings, each on a separate line, and stores them in an array, let call it input1, with one string per cell, in the order they were read. The sequence ends with an empty … |
| | I'm trying to implement a hangman game using linked lists but not getting anywhere. I want guessed characters to be inserted in a Linked list of chars at a position that corresponds to the character's position in the word they are trying to guess.(See example at bottom.) For some reason … |
| | Hi everyone I am coming from a C background and I am finding it hard to understand wrapper classes and unwrapping them and their use. Can anyone tell me how they work in english that is easy to understand. And what is an object is it a variable, a data … |
| | At this point I know how to utilize Google Maps within Android but it always seems to take up the full window, there is an image below which shows what I'm attempting to accomplish (having a box below the Google maps where I can store text i.e. "Hello World" **How … |
| | Howdy-ho. I am trying to right click on my table and change the cell border color and highlight color of that cell. I have figure out how to give that particular cell focus when I right click it by using int row = fixed.rowAtPoint(evt.getPoint()); int col = fixed.columnAtPoint(evt.getPoint()); fixed.changeSelection(row, col, … |
 | class Simple { void display() { System.out.println("ant hnkg"); } class Local { void msg() { System.out.println("inner"); } } public static void main(String args[]) { Local l = new Local(); l.display(); } } |
 | hello every daniweb friend. i have a javascript code which check if a field is empty `onSubmit` it alert a error line 15 but i don't it to alert i want to tag this link to open this html link `<a href="#login-box" class="login-window">Login / Sign In</a>` and i don't have … |
| | Hello good day. I have an idea for my program. I have a Table in my display. I want to add a Component to - let's say - the right of my screen. When I click this component it should display to me buttons and other components that I have … |
| | Alright, so I am thinking about an idea of a useless application, however it is interesting me. A 3D "perspective" of color. I know, confusing. But think of it this way: Movement given an x, y, z coordinate. Color given r, b, g = x, y, z I was also … |
| | ei can u please help me to do a program that accepts username and passaword using java JFrame... |
| | Guys why is my image not loading on my JFrame?? BTW I am using eclipse on my mac. Code for Board : package ourgame; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Board extends JPanel implements ActionListener { Dude p; public Image img; Timer time; public Board() { p = … |
| | I have an assignment for my cps class in which we have to create a program that will import a file from a server that has a bunch of numbers in it. The program is suppose to take those numbers, sort them, give the minimum and maximum value, average, median, … |
| | dear all, I just want to know how can i open any jsp page of my project from swing button of jframe. Do i have to use URL class and its methods or i can directly pass localhost address and run it. please reply. Thank you. |
| | Hello, im trying to make a mulitple choice quiz in for android. Im a newbie at this and i am having some difficulites with the logic. As you can see what i have done below is create two arrays, questions and answers. The first option within each of arrays of … |
| | I had a technical interview last week for a Java Software Engineer position. They asked some pretty basic questions such as: 1) What's the difference between an abstract class and an interface? Which do you use more? 2) How does garbage collection work in Java? 3) What is the difference … |
| | Dear all, I am making MS Access database connection with my java program. As i know that in Connection Following things are required: Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection con = DriverManager.getConnection("jdbc:odbc:DSNname","Username","password"); Now i have created System DSN in Odbc data connection and also i have attached database with that DSN. While creating DSN, … |
| | Assignment is as follows: **Create a GUI-based program to accept name of donor, name of charity, and amount of pledge from the user. Display a list of entries in a JTextArea or JTable. Submit the .java source file or files for this program. Do not use any package statements in … |
| | [code=Java] package newuser; import java.io.BufferedReader; import java.io.FileReader; public class Main implements ServerConstants { public static void main(String[] args) { BufferedReader lnr = null; String line = null; int N=1000; int totalRecords = 0; String [][] array = new String[N][]; try { lnr = new BufferedReader (new FileReader("LoginData.txt")); for (line = … |
 | Hello guys would someone please help me fix my program. I have two classes the one is named GetValues and the other one is SampleReturn. The GetValues class has an error illegal start of expression in the line `public static String kuhaName()` . The code is below. GetValues class codes: … |
| | I was tasked to make a program that took a string input, then reversed it using recursion. I'm getting a syntax error causing an exit code 1. Also, I'm sure there may be an error in the code as I'm not very strong with recursion. Any help with this (specifically … |
 | Hello, I have to write a program that will solve polynomials by user input, my program compiles, but gets an exception error. Here is my code: import java.io.*; import java.util.Scanner; import java.util.LinkedList; public class PolynomialList { private Node first = new Node(0, 0); private Node last = first; private static … |
| | An n x n matrix is a positive Markov matrix if all of its elements are positive and the values in each column sum to one. Write a program to check whether a 3 x 3 matrix is positive Markov. Your program should prompt the user to enter a 3 … |
| | Hello! friends i am a beginner to java can someone tell me about the basics and its coding ,please. |
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