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37 Posted Topics
 | Hi there, I know a fair amount about programming in both C++ and Java, but I still have much to learn. I am working on a mobile application idea for Android (so it's in Java) that uses a three-dimensional room as its main component. My very general question is, what …  |
| | Hi there, I'm new to tree maps and I am trying to write my own version of the pre-defined "remove" function for Tree Maps. I know I need to have two extra functions that find the minimum and maximum values in the map that will be called within the remove … |
| | Hi there, I'm attemtping to write my own version of the java "headSet" function which steps through a given tree set and returns all elements that are less than the function argument. For example: headSet(30) called for a set such as: [2, 5, 7, 18, 22, 34, 50, 76] should … |
| | I don't know much about Android development, but I know it's very similar to a 'normal' Java programming environment. For this specific piece of code: AFAIK, super.onCreate(savedInstanceState); is what returns information to the application in the event that an activity is interrupted (restart, detroyed, etc), if that makes sense. In … |
| | Hi guys, I am toying around with ArrayLists and objects and I created a quick program to add some objects to an ArrayList and print the list afterwards. I ran into an issue, though. I am overriding the toString method in order to display the names of the objects I … |
| | Further your knowledge, research this term: **data structure** Learn the principles and apply them; this is very basic programming knowledge. Make sure you don't get lost in the more advanced topics, though. Stick with the simpler techniques for now.  |
| | Hello! I was given the task to finish writing the definitions of the Treeset class methods. I'm currently at the [B]headSet[/B] and [B]tailSet[/B] functions and quite stumped. Here's what they look like currently, with no logic: [CODE]@Override public SortedSet<E> headSet(E before){ SortedSet<E> set = new SearchTreeSet<E>(); headSet(root, before, set); return … |
| | I started with C++ and did relatively well, but I still didn't understand most of the concepts. I then switched schools and learned Java, it was much easier to pick up, but the more advanced stuff is tough for me. I learned through books, Internet research, and school. I have …  |
| | Hello, Quick and easy question: I'd like to learn a little by investigating the source code behind the predefined Java methods/classes/etc. For example, right now I'm learning to work with TreeSet and I'd like to know exactly what's going on behind the class-specific methods such as 'first', 'last', 'pollFirst', 'pollLast', …  |
| | Your instructor 'denied' your work because it was plagiarized. It's not hard to tell when a student submits something above their ability. Study the programming language and write your own code. Then, if you have problems, ask them here and we'd be happy to help. |
| | [QUOTE=nilay84;1772096]Hi Everyone, Does anyone know how to add the user input into an array in java. for instance I have a table of 3 columns and 4 rows the 3 column is designed to allow the user to input 1 or 0. so whenever they typed in anything I want … |
| | Hi there, I am not sure if this is the correct forum for this, but I am currently working with an HPC machine for business use and it is currently running Ubuntu 11.04 (I have yet to update due to software incompatibilities). Anyways, some of the users would prefer to … |
| | Hi there, so I'm currently studying Java at my University and as of right now we're working on Linked Lists, Array lists, Array Deques, etc. As part of this lesson, we're being told to write our own versions, both recursive and iterative, of the predefined java functions for its corresponding … |
| | Hi there, I wrote a VERY simply program attempting to use a recursive function to calculate a math problem and spit it out onto a table. It prints once and then I'm getting a stack oveflow error on line 8 and then line 12: [CODE] package recurtable; import java.text.*; public … |
| | Hello all, I've been fooling around with some code trying to teach myself somewhat about Linked Lists. I wrote this quick program that creates a random number in each node of a list and asks the user to guess the number. I have a quit choice that, when executed alone …  |
| | Hi there! So I'm working on my next assignment and it's all about implementing a few exceptions in order to get us familiar with the topic. I am tasked with implementing 3 very simple exceptions to my previous program. So far I have 2 out of 3 working fine with …  |
| | EDIT: Sorry, above poster is correct. I changed my post to avoid confusion. [CODE]+PI: double = 3.141...[/CODE]  |
| | Hi again guys. I currently have a class named [B]ElementSet[/B] which houses an array of objects as well as an array of boolean values which pertain to two function tasked with flagging or unflagging an individual object. I also have an abstract class, [B]Element[/B], and two inheriting classes named [B]Subscriber[/B] … |
| | Hey guys. I am getting a fair amount of errors when trying to create this menu. I am not sure whether or not I am going about it correctly. Without further adieu: [CODE]package assignment.pkg2; import java.util.Scanner; public class Assignment2 { public static final int MAX_NUM = 10; public static void …  |
| | Hi guys, So for my next assignment I am required to, at some point, create a function that searches through an array of objects and sets a boolean value in a corresponding boolean array at the same position as the object in the object array, if that makes any sense. …  |
| | [QUOTE=rajhans;1668304]I have the code but it will be very difficult to understand by other person as it is a intermediate part of a big code. That is why I have just put the problem part with a toy question and expected answer.[/QUOTE] That's not the only thing that's very difficult … |
| | Read up on accessor and mutator functions. [CODE]public double getSalesTotal(double salesTotal) { salesTotal = purchaseTotal; return salesTotal; }[/CODE] This should be two separate functions, it will help avoid confusion. One function should 'set' the fields and another should 'get' a value. |
| | [QUOTE=hessian26;1657939]Hi, I am new to Java and just learning GUI's. I was wondering if someone could help me with a project? I am trying to create a questionnaire. It will was the user a question and have radio button answers. After the answer is selected, they will hit the "next" … |
| | Hi guys (again), I have a new issue. I am trying to bubble sort my array of objects to display in alphabetical order. Here's the code: [B] Subscriber class:[/B] [CODE]package assignmentone; import java.util.Scanner; import java.util.StringTokenizer; import java.util.Random; /** * * @author Bill */ public class Subscriber { //Field declarations private … |
| | I'm having some trouble with this section of code: [CODE] for(int i = 0; i < MAX_NUM ;i++) { subList[i].readIn(); System.out.println("\nDo you want to enter another subscriber? " + "(Y/N): "); anyMoreSub = keyboard.nextLine().toUpperCase(); if (anyMoreSub.equals("N")) { break; } } while(!isDone) { menuChoice = JOptionPane.showInputDialog("Please enter the letter for " … |
| | Hi there, I'm fairly new to java and I have a question about creating an array of objects for a class and allowing data entry for each individual object in the array. I'm a little confused on how to go about doing this correctly. As of right now I have … |
| | Hi all, just got done building my new PC and after spending several hours trying to get it to actually turn on (realized I mistook a fan connector for that of a floppy drive ><), I now have a problem when it turns on. Here's a video showing/explaining everything (please … |
| | So I'm fairly new to C++ and I'm wondering if this would be possible and what the code would look like. I'm trying to create an ongoing process that monitors when a certain program does something and launches another program when that thing happens. Example: I have Steam open and …  |
| | Hello! (Spelled polymorphism wrong in title, I know... it's late!) Now, I understand the concepts of both just fine, but implementing them is where I really run into trouble; this is especially when I'm given a specific problem to solve by using them (i.e. my current assignment). Okay so here's … |
| | Okay, so my assignment is to overload the following operators and use them in main: +, -, *, /, ==, !=, >, <, <=, >= and these friend functions: >>, << Now, for the assignment our instructor gave us a program with a completed header file, main, .cpp, etc for … |
| | Hello there! So I have an assignment where I am given a text file with customer information that I need to convert into a "label" format. The original file has caret (^) symbols marking the different lines to be organized. I have the input totally finished, the only thing I'm … |
| | Okay so I have a program that takes in up to 25 students and information for each including 5 test scores. All of that is done and working fine. What I am trying to do now is calculate the averages of each test 1-5 and then the total average of … |
| | Hello! So for my assignment I had to declare an array of 25 student objects and input data into them including another array of 5 test scores. All that is done and works flawlessly(At least that's what I think), but the last portion of the assignment is for me to … |
| | Hello! Well, I've been given a fairly difficult assignment (at least to me), and I can't seem to wrap my head around some parts. Here are the objectives: [I]"In this assignment you will demonstrate your ability to design a class and provide its declaration (.h) and implementation (.cpp) files. All … |
| | So, my assignment is to take in a student ID, first and last name, and 5 test scores. I am then to average the test scores, collect all of that data into an array and output all of the information in a tabular format(which I have yet to do). I …  |
| | So I'm looking to create a function that prompts the user to enter 'Y' for "Yes restart the program" and 'N' for No, do not restart. I know this should use the boolean operator, I'm just unsure as to how to implement it. I also know to encase the body … |
| | So for my first assignment of the semester I need to write a program that: 1.) Asks the user to input a string 2.) Asks them to replace part of the string 3.) Have the program prompt "Yes" or "No" on whether the user wants the program to restart, if … |
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