31,001 Topics
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| | 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 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. |
 | I have a problem with creating UML diagrams. This is the first time. Here is the question below:  And here is my answer:  Please check if there is anything wrong.  |
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