35,619 Topics
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 | This might sound like it's very simple but I tried many things and it doesn't work. When the user clicks the back button on a window it's supposed to also dispose another window. I've tried using static. if(Tester.backJButton.isEnabled()) { this.dispose(); } Tester is the name of the class holding the … |
 | Hi there, I was given a little exercise to complete for a graduate position. I have only done a HDip in Computer Science, so that's only about 8 months of Java stuck in with a whole other pile of stuf.. long story short.. I've only get the basics of coding, …  |
 | implement a full class Car that has teh following characteristics: brandName, PriceNew, Colour and Odometer. The class should have a constructor that prompts the user to enter the characteristics above. A method getPriceAfterUse() which return the price of the car after being used according to the following formula: a.car price …  |
 | Can someone give me some programming ideas to keep my knowledge up-to-date? I received a masters degree in computer science back in December and been job searching since then. I want to tell an employer something.  |
 | Hi, I'm thinking to upgrade from java sdk 7 to 8 (JamesCherrill will be pleased,lol!) and I was just wondering if there is anything I need to be careful with, especially in eclipse. I will start first with Windows, and then do the same thing in Ubuntu. My eclipse seems … |
| | Hi, I'm new to this Java world, and just can't figure out this problem. After I use nextInt or nextDouble, and try to use nextLine, it won't work unless I put nextLine twice. What's the problem there, and what would be the good way to handle this? Just gave a … |
| | Hi there, terribly confused how to get going with a career in programming. I have basic knowledge of Java programming principles, and I understand to some degree the object orientated aspect of the language also. My question is where to go now? Or what else to learn? Here are some …  |
 | An auto dealership has 50 cars and 50 customers who all show up simultaneously when the dealership opens.. All cars are off when the dealership doors open. As the customers enter, the first customer, denoted C1, starts every car. Then the second customer, C2, beginning with the second car, denoted … |
 | Hello All, I am unable to import javax.sound.sampled in a mobile app I have been playing with. I am currently using AndroidStudio and I do have the path pointing to the JDK not the JRE. I was for a while able to import them when I included the jar files … |
| | Not sure why but the chronometer counter will start as soon as the application starts without me clicking the button. Does anyone see what the issue would be? package com.example.android.courtcounter; import android.os.SystemClock; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.widget.TextView; import android.widget.Chronometer; public class MainActivity extends … |
 | Can anyone help me with this? You have been hired by the Wayne County Road Commission to write a Java console application that dispatches patching trucks on county roads. It reads truck and route data from files and stores them in objects. It then reads an order file to dispatch … |
 | Hello I am almost finished with my assignment but I just need it to do the math correctly and I need help!!! I can easily do the problem on paper just fine however I can't get Netbeans to create the right answer. Here is the problem I need it to … |
 | Hello to all! I know well how to access database and its tables from sql server in Netbeans, But know I need to access a report from sql server in Netbeans. For example if I have a table named "MyTable" in sql server 2008 and then I ran a query … |
 | I am unabe to send email. The page is hanging and it is not displaying any error. Please help me fix the issue thank you in advance. |
 | I am fairly new to java using Spring boot and maven. I was assigned a task to get the revision number and timestamp for the current revision from the project and put them into an app.properties file . Most of the demonstrations I have found displayed the templates as such, … |
| | Hi guys, I have a question about error handling. Still working on the addition application and now that I've learned what are the correct exceptions to handle I'm not sure what to do when I've established that the my inputs are all valid and print my result. Let's have a …  |
| | HI guys, I'm really new to SVN and today I've installed tortoise as I'm working in windows at the moment and I'm following this tutorial https://tortoisesvn.net/docs/release/TortoiseSVN_en/tsvn-qs-guide.html. So, I have a java project in Eclipse: I have created a local repository folder on my machine and imported a project in it. … |
| | Chaps, I wonder if you can give me a hand with this. Here's the brief: "Create a program that draws 10 random filled shapes in random colors, position and sizes. Method paintcomponent should contain a loop that iterates 10 times. In each iteration, the loop should determine whether to draw …  |
 | Hello all I have a chat room application where clients connect to server and can chat between each other, I am also trying to add a feature where a client can request a file from the server sucha s an image sound file or video I am trying to convert … |
| | i Am new to selenium webdriver and I want to automate a webpage related to my project. I am currently working on login page, however I facing problem with the login button which I am confused which locator to use. The login button is below: a href="javascript:LoginSubmit('Log In')"> img border="0" … |
| |  Plesae take a look at the image attached. I have created a maven project by the following steps: 1. open eclipse EE 2. file > new > pther > maven project 3. click on 'create a simple project' checkbox 4. click on 'use defualt workspace location' checkbox > … |
| | Hi guys, I have a simple application which allows users to input a divisor, a divident and then calculates the quotient. I'm using vaadin as framework but I don't think that matters. So I've been thinking about the exceptions that can occurr and these are the ones i have identified: … |
 | THE CODE BELOW IS FOR SAVING FORM DATA FROM HTML FORM TO A TEXT FILE IN THE LOCAL COMPUTER. BUT, THE TEXT I AM GETTING IN THE TEXT FILE IS ALWAYS IN A SINGLE LINE AND I CAN'T ORGANIZE IT. THE CODE BEING USED IS AS BELOW. <!DOCTYPE html> <html> … |
 | Hi daniweb community, this sounds really weird question but I'm having a problem finding a page/portal. has been about 2 days and I've been searching literally for more than 30 hours. From the desperation I am asking any of u if they know it. Inside microsoft page, or microsoft azure. … |
 | Hi! Can I ask for help, please? How can I pass variables especially array variables and values from a class to other class? |
| | Java code to get windows service start time ? Like how we get using Process Explorer. Thanks in Advance! PFL for Screen Shot: https://drive.google.com/file/d/0B5KXd3eMbanKckt0YXZCTERWU2c/view?usp=sharing |
 | hi!guys pay some attention there thanks can any one tell be what is the difference b/t java and java script.. According to my point of view java is programing language that used for the application development..but i have a little knowledge about java script i think it is client side …  |
| | Hello, I am facing a problem I cant seem to find an efficient solution for. My application is supposed to parse a text file while another process is continuously adding to it. I have tried scanner and inputstream but both seem to stop once they hit the end of the … |
| | Hello everyone! I have been working on my school project and I have encountered problem linking jTable with a table in the sql server.Can anyone please help me regarding it.Please help me with the code on how to link the the table. |
 | Create a payroll program for 5 part timers for 1 month let the user program enter the name of 5 employee and the No. of hours per week. Based on the rank,calculate and display Net Salary based on the ff: Rank Rate per hour Instructor I Php 172 Instructor II …  |
| | Hi! I'm a beginner in Java can you share an answer for this assignment since I already been doing this for a week and I don't know how to answer. Create a Student class with those attributes: 1. firstName 2. lastName 3. grades (it contains grades between 0 and 10) … |
 | Hi guys I need a help here, I’m trying to use Ajax to update the column of the table in the database with combobox without a submit button, by the way it update the column finely but unfortunately the column data is erased to **0** when a webpage is refreshed. …  |
 | Hi, I have one function (in a library I can't change the code) which takes a key and returns a Object. This code is written in java. I am calling this function from cpp code. I am accepting the result as jobject. 1. Added key as "key1" & value as … |
 | HI all, I'm stuck in a code where i cannot read the database value in jsp textarea. Value stored in database like "address 1 address 2" and cannot be loaded on jsp page. Plz help. |
| | I really want to learn Java but I have no idea how to study it. I just keep reading the books yet have no idea how to program. :(  |
| | The problem that im facing is, the below code is working correctly and retrieve the pdf format files correctly and displaying it in the iframe. but it is only working in eclipse internal browser but not in firefox or internet explorer. what will be the reason for this.... Source code: …  |
| | hi, The jsp page has multiple check boxes (retrieved from DB),.... [CODE] <input type="checkbox" name="selecttype" value="<%=rs2.getString("description") %>"/> [/CODE] I've read these values in to servlet page using [CODE] String[] selecttype=request.getParameterValues("selecttype"); [/CODE] the 'selecttype' now contains only selected checkbox values. but i want to retrieve values of unchecked checkboxes. Pls help …  |
 | Hey new to JDBC SQL DERBY and Java so I don't know why but my Jtable only shows the columns. Here are my codes for my LeaderboardDAO class. public class LeaderboardDAO extends Dao { private static final Logger LOG = LogManager.getLogger(PlayerDAO.class); public static final String TABLE_NAME = "leaderboard"; private static … |
 | Hello everyone, I am trying to show an animated spinwheel image when I am making a servlet call, and hiding it, once the call comes back in my JS method. The following code displays the image alright, but fails to hide it, once the call comes back. JSP <div id="spin" …  |
 | Hi, How to programming in java through make the web video chatting application? Please tell me about this knowledge and in which are require the skills. |
| | Hello. Im doing some practice questions and Im kinda stuck. So basically I have three Jbuttons: "Menu", "Left" and "Right", a JTextField : "tDisplay" and an array : status. code (dummy code for example): String[] status = {"hello","goodbye","goodnight","goodmorning"}; what needs to happen is when Menu is clicked Hello is displayed … |
 | Hi My code is giving me a red line under '.createStatement()' and I really don't know why and how to fix it. @Override protected String doInBackground(String... params) { if(userid.trim().equals("")|| password.trim().equals("")) z = "Please enter User Id and Password"; else { try { connection con = (connection) connectionClass.CONN(); if (con == … |
| | Hi, I have been working on JNI. I have one doubt. When I call any native method from android activity (Java code), then we get jclass object from jobject instance we get in the native method as a parameter. Why do we need it actually? Here is a snippet from … |
| | I want to build apps using play framework. I have looked on for [play framework for Java](https://www.eduonix.com/courses/Web-Development/learn-to-build-apps-using-play-framework?coupon_code=offer10) giving guide to build apps. If you are having some additional resources, pls share.  |
| | I would like to delete a binding group from my java code, Netbeans does not allow me to do it.I try to do this by right click >Refactor > Safely delete , but a warning appears and the group is not removed. How do I go about deleting this? |
| | Hi, I have problem I can't add to the JTable new row (public void addRow(ArrayList<Object> newRow)) from the other class with action of the button Main.java import com.sun.javaws.Globals; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.SQLException; import java.sql.Statement; import java.util.ArrayList; import javax.swing.event.TableModelEvent; import javax.swing.table.AbstractTableModel; import javax.xml.bind.annotation.XmlElementDecl; public class … |
| | Anyone here know a good java library for XADES signing? Tried my luck with Xades4j, but that didn't go anywhere, couldn't find any API for that. Please provide code examples if you can. |
| | Hi guys, I wonder if you can help. As I've started as a programmer, I've been told I have to practice OO a bit more. I've done the theory, but I think I will have to take another look at it. , Above all though, I have to do exercises. … |
| | I'd like to start from the basics if I may please. I've read a few tutorial here and there and I've just created a test application with probably the simplest RPC calls you can possibly have (basically I want to use the RPC call to call a method to print … |
| | I want to learn java for competitive programming . I'm actually aware of all the great books on java like thinking in java , effective java etc. But those books are very detailed . i want to learn enough for competitive programming without going into too much of unnecessary details … |
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