36,051 Topics
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| | The solution of the problem includes modeling and realization of the process of issuing cash receipts in a store. It is necessary to create classes that store and manipulate information about: store; cashier in a store; goods in a store; cash register in a store; a receipt that is issued …  |
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| | I'm new to Android Studio and Java and I'm trying to display a dynamic battery percentage on multiple activities, but it is only showing on the main screen. I am also trying to do the same thing with displaying time. I am trying to get it work with my second … |
 | I've created a method that requests input for a grading and would like 0 to be a valid input result. But my code doesn't allow it? Can anyone help? public int getValidModuleMark3 () { Scanner input = new Scanner(System.in); int mark; System.out.println ("Enter number of compensentable failed credits in range …  |
| | a) Write MARIE code to: 1. Input a number and store it in X . 2. Y will be equal to “ |
| | I need with with a section of my assignment where it asks to take four first attempt module results (i.e. all module average, ISM module average, number of compensentable failed credits and number of outright failed modules) as parameters and returns the degree classification (e.g. “distinction”, “merit”, “pass” or “fail”). … |
| | [COLOR=Indigo]Hey I'm pretty new to C++. I'm taking a class on it now but I don't know how to make sounds in C++... I've done QBasic so I have a little programming background. I'm right now thinking of what to do for a program, and it largely depends on if … |
 | I am trying to get the text entered from jtf3 and jtf4 to show in the Message Dialog str1 and str2. Error states that the symbol fot str1 and str2 cannot be found. Please advice. class ChuaWeiheng extends JFrame { private final JLabel jl, jl1, jl2, jl3, jlimage; private final …  |
| | Hello people! :) I'm quite new in the programming world. I'm really interested in programming from the time I found that there's coming a game called Hytale, and **I would love to be able to make mods for it**. So basically I have a book that should introduce me to … |
 | Hi guys, I was trying to test a method which takes a user input, does something and then returns that input but I'm having some issues with it. I've attempted a few solutions, mostly described in SE, I will leaave them out of this post and discuss instead the one … |
| | hai i need help,my lect ask to do assignment and the question are do insert,delete,edit and print output for queue and stack.everthing is okay until i got stuck how to do edit in queue and stack......someone please help me.thanks in advance |
 | Hi all, I am Luna. I am pretty new here so please be patient with me. I go to a lot of concerts, but my favorite singer is Travis Scott. I'm currently studying to be a Merchandise manager which is what I've always wanted to do. I think the one …  |
| | As one of the most powerful tools in Excel, PivotTable has the ability to calculate, summarize, and analyze data, which allows us to see the comparisons and trends of our data more intuitively. In addition, PivotTable also has the ability to sort and filter data, and it can meet our … |
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| | I keep getting CircleInformation.java:13: error: cannot find symbol float circumference = 2 * (PI * radiusF) ^ |
| | When i run my code i get this error: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: How do I fix this? this is my code so far: import java.awt.Font; import javax.swing.*; public class Program7 public static void showOutput(String output) { JTextArea jta = new JTextArea(output); jta.setFont(new Font("Consolas", Font.PLAIN, 60)); JOptionPane.showMessageDialog(null, jta); } …  |
| | Hi, I want someone to explain this code ( method ), and how it works.؟؟ Especially the process of moving the elevator // The elevator class draws the elevator area and simulates elevator movement class Elevator extends JPanel implements ActionListener { // Declaration of variables private Elevator_Simulation app; // Elevator … |
| | I am trying to sort my array to print it out according to the suits e.g. S10, S6, H11, C4, D10 etc. I have tried adding Arrays.sort but it doesnt work. Please advice. private void transfer2D(String[][] twoD, String[] strArray) { int i = 0; for( int suit = 0; suit … |
| | I am trying to get my private void transfer method and pass it into a 2D array transfer2D method, after which I am able to print it out using the print2D_1 method. I am also trying to sort the array from the highest suit to the lowest suit followed by … |
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| | Hello everyone, I have some problems with my program , hope you can help me to solve it. 1- I need a method for the** Clear Time** button that remove the counter to be 0. ` private void btclearActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: min=0;sec=0; lblsec.remove(lblsec); … |
| | i am stuck at aparticular place and cant help myself. my professor asked me to built a notepad using .io and .awt pakages only and i am unable to do the save function in the notepad can anyone please help me |
| | There are times when you need to make sure your counter starts at an odd or even number. Even is pretty simple - `counter = counter + modulus(counter)`. If counter is even it stays, if it's odd it gets incremented by 1. Odd is a bit more complicated - `counter … |
 | where theuser tries to guess a 3 digit target number Whenthe user guesses a number, the computer • Prints k `+' if the guessed number has k same digits as the target number and also in their correct positions. |
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 | I have the following Java code snippet: Map<String, List<String>> phones = new HashMap<>(); phones.put("User1", Arrays.asList("0502324547", "0651634767")); phones.put("User2", Arrays.asList("0977634321", "0697654221")); phones.put("User3", Collections.singletonList("0970011223")); Map<String, String> map = phones .entrySet() .stream() .flatMap(e -> e.getValue().stream().map(v -> new AbstractMap.SimpleEntry<>(v, e.getKey()))) .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue)); Using it I'm converting Map<String, List <String>> to Map<String, String> and then passing … |
 | My name is Henry, and I started programming about 10 years ago. I always loved playing video games, even from a young age. That passion eventually turned into something much more. Learning programming languages is very popular at the moment. A lot of people leave their current workplaces to learn … |
| | Hi, In C program Function has three parts, Function Declaration. Function Definition. Function Calling. In java i cannot able to declare a function .Is it possible to declare a function in Java. For example: [code] import java.io.*; import java.util.*; class Fun_example { // show();//Cannot able to Declare a Function ? … |
 | Hello, I am working a program that starts at a direction and goes to the destination and reverse. I have reversed the list and used a if statement for the switching the directions from R (Right) and L (Left) but it doesnt want to work properly. My question is how … |
 | Hello , in working on java program And i made 4 classes with main So they want me If the class if ( convener ) they want me to enter the id to dsplay the 1-allocate method 2- drop method 3-print report Dont know how to do it |
| | hi everyone, i am very new in java. can anyone help me to solve the following problem: A school conducts a 100 mark exam for its student and grades them as follows: Grade: Grade A: Marks>75 Grade B: 75>Marks>60 Grade C: 60>Marks>50 Grade D: 50>Marks>40 Write ajava program to calculate … |
| | how would one convert this to python? var unlockedState = 1000; var lockedState = 2200; var motorPin = 14; var buttonPin = 4 var ledPin = 17 var blynkToken = 'blynk_token_here'; // *** Start code *** // var locked = true //Setup servo var Gpio = require('pigpio').Gpio, motor = new … |
| | class Node(object): def __init__(self, data): self.data = data self.nextNode = None class Queue(object): def __init__(self): self.head = None self.tail = None self.size = 0 def enqueue(self,data): self.size += 1 newNode = Node(data) if self.head is None: self.head = self.tail = newNode else: newNode.nextNode = self.head self.head = newNode def dequeue(self): … |
 | I am skilled in Core PHP, JavaScript, Mysql, Ajax, HTML, CSS, jQuery and Codeigniter and having 4+ years of experience in Web Development. I have very vast knowledge in dynamic and static website development. |
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| | Hi, Question. How does UserDetailsService catch the username that I have submitted in the custom login page which I have created? TIA :) |
 | I have written a code to generate bar codes and saved them to a pdf file . The code executes successfylly but the PDF file does not open saying giving an error whome picture I am uploading. Please see my code and Picture with the error.  public void createPDF(String … |
| | Hi java coder here im converting a program into delphi for a project basicaly ive forgotten my whole delphi maths soo can anyone convert this into delphi [CODE](l1 & 0x2 ^ 0xffffffff) == -3;[/CODE]  |
| | There is a network of tracks (list), tracks are of two types - standard (with one start and one end point) and with a fork ( one start and two end points). These points are called nodes. It is known that each track can only be connected to one other … |
| | Hello! This is my first time trying to use Java, and I was trying to learn something with the "Scanner userInput" and ".nextInt()". After I put a bit of code on, it showed me: Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Unknown Source) at java.util.Scanner.next(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at java.util.Scanner.nextInt(Unknown … |
| | Im just learning javascript and want to make a code for a prank on my friend. I want it that when i plug in a certain usb it will pop up a fake virus alert after a couple of seconds, and when you exit off it will pull back up … |
 | Create a Java program that will compute for the average (Final Grade) of three (3) input numbers (Prelim, Midterm, Pre-final). The input grade should ONLY accept values ranges from 70 to 100, and will display a message if the input grade/s is invalid. The program should also be capable of … |
| | Hello I have a abstract class: import javax.swing.JOptionPane; public abstract class Question { static int nQuestions = 0; static int nCorrect = 0; String question; String correctAnswer; abstract String ask(); void check() { nQuestions++; String answer = ask(); if (answer.equals(correctAnswer)) { JOptionPane.showMessageDialog(null,"Correct!"); nCorrect++; } else { JOptionPane.showMessageDialog(null,"Incorrect. The correctanswer is … |
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| | Does anybody know a good way to break a screen up into multiple sections for filling out lengthy multi section data? I would like something that I can break data inputs up into sections and move onto the next section when I finish filliing out a section prior, sequentially. What … |
| | I have a program that i need to convert from java to c++... i just need help doing it... heres the java: [code] /* Name: Joseph Coleman Class:CSCI 1302 Assignment: Employee + ProductionWorker Academic Honesty: The integrity of students and their written and oral work is a critical component of … |
| | I made a JavaFX Discord Server for people who like to talk about JavaFX stuff, or need help with certain projects, I really like to work with java, especially with people who are working with JavaFX (: Here is the discord link: https://discord.gg/yZ3Y3Fd or https://discord.gg/AzFaNU |
| | How do I make a cube in javafx that have 6 different textures on each side of the cube? The only way I know how to solve this, is by making 6 imageviews and give them each a specific coordinates that make them look like a cube. Is there a … |
| | public class HashedClass{ int ticketNumber; // keyfield string purchaserName; Hashtable hashtable = new Hashtable(); insert(); fetch(); delete(); update(); } I started a pseudocode above, but I know it needs more work. Are there any resources that can help guide me to implementing my …  |
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