199,114 Archived Topics
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| | Good day all, am new here, probably don't know if am doing it right. My import.java.util.Scanner is not working on my intelliJ IDEA, thanks in advance!!   Programming java  |
| | I need help "error: file not found: C:\Program Files\Java\jdk-18\JCreatorV4\MyProjects\main.java Usage: javac <options> <source files>" this and this-"Error: Could not find or load main class main Caused by: java.lang.ClassNotFoundException: main" keep popping up the code I'm using is the simple hello world for java the name is main.java public class main …  |
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| | Hi, I need to split the pdf document into two parts,like i have a pdf which consists 100 pages,i need to split the pdf into two parts where first part consits 10 pages and second part consists 1 to 100 pages?how to do that using php?  |
| | Hey, I am doing some programming exercises, it is to read in a txt file and then read in a list of banned words in an array. I've managed to do this but the last step requires me to filter the original text file with the banned words and change …  |
| | A number m is called a proper divisor of n if m<n and m divides n. A positive integer is perfect if it is the sum of its proper positive divisors. For example 28 is perfect because 1 + 2 + 4 + 7 + 14 = 28 . 1, … Programming asp |
| | hi, i have some problem with my php code. when i run the php, the page keep loading and no output displayed. here is my code: $dayBeforeNew = $_GET['daybefore']; $dayAfterNew = $_GET['dayafter']; $sql = "SELECT reference.LOCID, reference.Region, Sitename, (SELECT `Data Total Traffic` from 4g_statistic where reference.LOCID = 4g_statistic.LOCID AND 4g_statistic.Day …  |
| | I am using intellij for the java coursework which is related to clients and databases. I am receiving the following error Exception in thread "main" java.lang.NullPointerException: Cannot invoke "java.net.URL.toExternalForm()" because "location" is null at java.desktop/javax.swing.ImageIcon.<init>(ImageIcon.java:232) at client.Interface.$$$setupUI$$$(Interface.java) at client.Interface.<init>(Interface.java:54) at client.Application.main(Application.java:317) This is the code: ` ` package client; //region … Programming gui java java-swing printer sql user-interface |
 | How can I check special characters are there (String) or Display on label? I Use this but it is only count Dim input As String = "Hi! Hello, How are you?" Dim pattern As String = "[!""#$%&'()*+,\-./:;<=>?@[\\\]^_`{|}~\s]" Dim matches As MatchCollection = Regex.Matches(input, pattern) MessageBox.Show(String.Format("There are {0} special characters in … |
| | I have a fairly simple question, which may or may not have a simple solution. How can I run the system(); command, in a win32 (not console) application, without the black command prompt window flashing on the screen? If relevant, I am using Dev-C++. |
| | I need help on this php pdo error:PHP PDO - Uncaught Error: Call to a member function prepare() on null |
| | Hello there. I'd like to develop a mobile app with cutting-edge functionality. A rider app, a passenger app, and an admin portal are all included. It is necessary to register and edit your profile. Can someone provide me with a cost estimate for app development? or else any other way … |
| | You have been contracted to develop a prototype system for the Norman Manley Airport that will assist the airline staff in processing persons who have checked in for their flights during the covid pandemic. The information being stored for each person are as follows: • ID# • Name • Gender … Programming c++ data-structure |
| | I want to make a fish shooting game, but I don't know where to start maybe here friends can give me directions please help for my learning |
| | How do you print repeated digits from 1 to n after asking a user to enter a int8 number n.The printed digits should be random.say for example a user enters enters n=5 then the program prints randomly 11223412345.You can see the maximum is 5.Also how do you sum up these … |
| | I am making a calculator in Virtual Basic for almost a week. I am encountering a problem when using the equals sign. When I type problems like 4 + 6 = 10 it answers correctly. When I press the equal again immediately after the calculator answers 10. It should enter … Programming vb.net visual-basic  |
 | I have a subform called "Contacts" embedded on my "Tickets" page. I want to create an edit button to jump to my contacts_edit.php page and use the 'ContactEntryNumber' (the unique key from my Contacts table) for the displayed contact record as the updateID. I have played with this and read … |
| | I want to create a java pane with a canvas on the left and column of other components on the right. I did this long ago but lost that code. Can anyone point me in the right direction to do this? |
 | Hello. I am working on a personal project using React. I have three checkboxes that are supposed to filter the information in the table automatically when checked off (for example, if you check off "airline1", then only airline1 and its data will populate in the table). I would like some … |
 | Hello webmasters, I am trying to create a script using vanilla PHP. I am familiar with the language and I have created a cronjob before, but only using cPanel. I want to create cronjobs using PHP if possible with out the need to go to cPanel. I am trying to … |
| | I'm building a tool in Python for which I need to read out error codes for specific devices using the Server-Eye API. Server-Eye is our monitoring solution where all of our devices and the devices of our customers are registered. The documentation at https://api.server-eye.de/ wasn't very helpful or I'm just … |
| | I'm broadcasting an intent in my app and receiving it with a broadcast receiver. I can handle the broadcasting and receiving. No problem with that. However, I want to register the receiver completely programmatically instead of doing it in the manifest file. Notice, that in the manifest file, there are … |
| | Hello All, I have a question regarding Gutenberg React. I'm familiar with React which is what leads me to not understanding how the process works. React can only render JSX but Gutenberg seems to render HTML (presumably by setting inner html dangerously), however it also adds event listeners to the … |
| | I have a problem with a DnD program, so when I add 2 or more images and apply a filter to one of the images (using a right click), it only appears on the last image added. I think i have to store the image in an Array while waiting … |
| | Assume a basic x86 PC (or if it is impossible due to locked access/firmware blobs etc assume the closest modern equivalent of a PC e.g an open RISC system with cpu ram hardrive and a way to interface with a keyboard mouse and a VGA/HDMI monitor) NO OS is present. …  |
| | Hello everyone! Can you please tell me how can I limit the number of entries to my website with one login? I’m going to use Joomla for this site. I need to get a unique device id apart from the platform. What should be used - php, javascript or anything …  |
| | Hi. I'm trying to convert my python file into pseudo code but I have no idea of how pseudo code work. continueAnswer = input("Please enter either continue to carry on with the program or end to stop it: ") continueAnswer=continueAnswer.upper() while continueAnswer == 'C': while True: try: print('') encodeORdecode = …  |
| | Hello This is a simple php login script with sessions. It connects to mySQL for usernames and passwords. I’m using a variation of the code from [url]http://www.phpportalen.net/wiki/index.php?page=Enkel+Inloggning+med+Mysql+och+sessioner+-+Komplett+kod[/url] (index.php is the relevant part) Here is my code (my script is called login.php): [code=php] <?php session_start(); // Always at the top include … |
 | Who's up for a puzzle? About two months ago, I began to have troubles using the Town of Oakville's web site where I book fitness class spots. In places where there should be text, it's blank. My feeling is that this began intermittently, but I may be wrong. Today it … |
| | am doing a project with I/O and structs. My text file is below. I need to make my program store each string in a different part of the array of structs I have created. I am having a problem making it separate them in the array when it senses a … |
 | Hi everyone, i hope someone can help me with my activity i cant really catch up on my lessons so i hope someone can help me explain each line of this code this language is pascal https://onlinegdb.com/0Z0pIIsen |
| | Hello, I am new in C programming, I am writing a function to evaluate a prefix arithmetic expression. I know my code works well but it seems the message floating exception (core dumped) is because if my (preval / 0) the program is not going to work. However, I would … |
| | I am using phpmydirectory and am having problems logging in. We had a power outage yesterday and this morning i cannot access my Control Panel. I am just getting teh error message that i have used so many login attempts and when i get to 5 attempts i will need … |
| | The web application will have a database that consists of millions (over 20mil ... maybe 100mil or more) of hosts (ipv4,ipv6 and domains) and additional data to each host like blacklist, uptime, history, geo data (country, region, city, isp). I could, of course, use other RMDBS system like MySQL, Oracle, …  |
| | hii how can i make self join and sum data in other table by username i have table like this members (id, username, referral) ref_bonus (id, username, bonus) members id | username | referral ---------------------- 1 id1 id2 2 id2 null 3 id3 id2 ref_bonus id | username | bonus …  |
| |  username = ["John", "Peter", "David"] password = ["abc123", "123abc", "a1b2c3"] Passwords and username are paired by index. (i.e., John’s password is abc123, etc.) Then make the user input a username and password, then check if the input matches the pair of username and password. If account exists, display ‘Welcome, … Programming |
 | Hi DW. I'm creating a chat system which will alow guests to send DMs to the operator and the operator can reply to it. I'm using MYSQL as my database, fingerprint2js for identifying the user since user has not yet logged in or registered but want to first communicate with … |
 | I know this has a simple answer that I should know, but for the life of me, can't remember. I have the following update statement in my code: $stmt = $pdo->prepare("UPDATE `files` SET `filename` = ?, `md5` = ?, `filesize` = ?,`logtime` = now() WHERE `id` = ?"); $stmt->execute (array($isoname, … |
| | I have two large files that I want to make available for users to download. When trying to download from my web host, the download never starts and I get a "504 Gateway Timeout". How would I revise my code to download from a file sharing site? I tried the … |
 | $html = 'Hello there this is image 1 <img src="http://www.example.com/XXX1.jpg" width="653" height="340" alt="xxx" title="xxx"> !! And Now you can see image number 2 <img src="http://www.example.com/XXX2.jpg" width="653" height="340" alt="xxx" title="xxx"> yep.'; $dom = new DOMDocument; $dom->loadHTML($html); $imgs = $dom->getElementsByTagName('img'); $imgURLs = []; foreach ($imgs as $img) { if (!$img->hasAttribute('src')) { continue; … |
 | Hello everyone! I working on a social network alike page whare I want to implement a messaging system. I can do all that and I have it working. What I want is, when I get two or more messages from someone. I only want to display the lates message from … |
| | I don't understand why this update script isn't working. It is supposed to get the names of files in the download folder and update the files table in the database. It is running through the code without exiting when it fails to update but still displays "Update Successful". The downloads … |
| | Hi DW. I have code: <div class="lv-item media"> <div class="lv-avatar bgm-purple pull-left">u</div> <div class="media-body"> <div class="lv-title">dynamically_generated_value</div><!-- I want to get this value --> <div class="lv-small">Sample text</div> </div> </div> I use the following code to activate the selected list. NB the above is also dynamically generated for simplicity let say we … |
| | Hello, I wrote this c program that will rearrange the numbers in an array such that all the even numbers come first and that will also calculate the sum. However, when I tested it on mipsmark software ( for correcting assembly language programs) I have a test fails. Here's what … |
| | hi All i am trying to make a set of pages that are adaptable to different websites, the text is generally the same for each site, but i need to insert names and other text to the site on different pages, i would like to do that by having a … |
| | I am using colab and below is the code import pandas as pd import numpy as np import os import csv data = pd.read_file(r'C:\Users\sd3394\Test\CAN_all.csv') data.head() Programming python |
| | Hello all, We have just launched a startup. Now, we are looking for a simple web-based relational database system where we can easily add tables and connect them to one another through foreign keys. For example, we would want to create a suppliers database in which we could perform a … |
| | I'm using the following code for users to download files from my website. It works fine for files under 50MB, but fails immediately for larger files. Can someone explain why this is happening and how to fix it? Some of the downloadable files are over 800MB, so I need this … |
| | Hello, I am trying to count the number of characters in a string $a0 that return a 1 when passed to the function, otherwise return 0. Heres what I did: I dont have the correct answer __ output format must be 3, I have 11 .text .globl __start __start: # … |
| | Hello guys, I'm using mustache php template engine with classes. My system is extendable via extensions which is injected in basecontroller construct method... The extensions is working correctly, but in them i have html and js... I want to move html/js in external files but i need to works with … |
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