Software Development Forum

hey there guys, just starting to learn java and i'm having a little trouble putting code to paper. don't really want to ask the teacher because hes a perv but lets not get into that. okay, i am supposed to make a GUI for electronic voting ballot paper thingy and …

Hi all, Does anybody know what this "WSaction" is? What it does and most importantly how it works? I've tried googling this but hardly found ANYTHING.. I'm busy working with Servlets and as far as I can tell it checks what button was pressed in the HTML form.. But I'm …

i m using dev c++ for opencv i got problems in displaying image here is the code #include "cv.h" #include “highgui.h” int main( int argc, char** argv ) { IplImage* img = cvLoadImage( "M.jpg"); cvNamedWindow( “Example1”, CV_WINDOW_AUTOSIZE ); cvShowImage( “Example1”, img ); cvWaitKey(0); cvReleaseImage( &img ); cvDestroyWindow( “Example1” ); } …

Hi Guys I wonder if you can help me with this I have built an application that reads my forum and grades responses and things and adds them to a database,. When the application is searching my forum the gui is hanging until the search is complete. The front page …

So, I have been working on some code with a group of people/organisations etc. and I've hit a small bump in the road that I thought someone on here may be able to help me with :) I have developed some code that draws 3D towers to represent the amount …

public static double average( double... numbers ) { double total = 0.0; [B][I][COLOR="Red"]for (double d : numbers)[/[/COLOR]I][/B] { total += d; } return total / numbers.length; } can any one explain the line bold if posseble d program too...

Hi everyone, I have been playing with a piece of code that is to simulate "shortest job scheduler" for almost 2 days and there is a runtime bug which it's seems I am not able to find. Any help is really appreciated. Here is the code: [CODE] int sjf_scheduler(int number_of_jobs, …

I've got a running and working database that's storing data into a *.sdf sql compact database. it's a fairly simple program and that's all i needed to store the data. is there a preferred report generator that i can run to query compiled data for reports? i've looked at a …

Help please I think there is Copy.to function but i cant find it :( I'm using VS2008 Thanks

Hi everyone, I've been debugging my program all night and I just can't quite come up with how to make my counter work. I keep feeling like I'm putting it, or maybe just part of it, in the wrong place so I've been moving it all over the place but …

Does anyone know any example of source codes that can receive a string(SCPI String) and send it to a SCPI library/module/commands? For example to those who know, GPIB has their own specific module that can be used in VB and what i need is somewhat that same specific module that …

I'm working on a program to save and load character files for a text-based RPG. There are three slots to save to. I'm having the user enter whichever slot he wants to save to through inputting an integer. If the number is lower than 1 or higher than 3 I …

Here is a simple program which gives me unexpected results: [code=c]int main() { printf("\nTo calculate a^b, enter value a now.\n"); int a = getchar() - '0'; printf("\nEnter b now.\n"); int b = getchar() - '0'; printf("a = %d, b = %d\n\n", a, b); return 0; }[/code] if i hit a …

Ok I feel like this may be a dumb question, but I'm putting it out there anyway. It's been a while since I've worked with C++. What characters does C++ print for negative values of char? Positive values seem to follow ASCII, but ASCII is only 128 characters. So where …

Hi, this is a very strange problem for me. I'm writing an app that uses the BouncyCastle API. I downloaded the jar file from their website and I put it in my project build path so as to use it, and it works. However, when I try to run the …

I am using the Direct2D API to draw some graphics for my program. I have a function that I call every time the Window redraws that draws the frame. I can't hardcode every object to be drawn into the function, if I want it to be dynamic. What is the …

Hello everyone, I'm working on a random text generator -without using Markov chains- and currently it works without too many problems. Firstly, here is my code flow: 1-Enter a sentence as input -this is called trigger string, is assigned to a variable- 2-Get longest word in trigger string 3-Search all …

can anyone explain to me about what actually is a constructor?

i know what an interface is. but i dont understand what the use of connecting the objective reference to the interface method and then use it to implement.. could someone explain to me the code..whats going on/ [CODE] interface TextReceiver { void receiveText( String text ); } class TickerTape implements …

Ok, I'm really confused here. I know that the only way to transfer objects via input/output streams is if they are serialised. If i wanted to transfer objects of my Person class from my client to server, I would have to implement "serializable" in my Person class. That's all well …

I've created an algorithm that draws a 2D grid in the most efficient way I could think of. Suggestions to improve it are encouraged though :) [CODE] public void DrawWireGrid(int xDivisions, int yDivisions, int cellSize, Color color) { Vector3 a = new Vector3(); Vector3 b = new Vector3(); for (int …

Few days ago I finished making my own (quite primitive) chat server with SocketServer. I haven't had any problems with it apart from the designing of the chat protocol: I made a very sketchy protocol for messaging. The client just sent unix-like commands to the server to do certain opperations: …

[code] #include <iostream> #include <fstream> #include <string.h> #include <ctype.h> const int SIZE=100; using namespace std; class Person { private: char name[30],address[50],phone[11]; public: friend ostream &operator << (ostream &os, Person &p); friend istream &operator >> (istream &is, Person &p); friend ofstream &operator << (ofstream &fos, Person &p); friend ifstream &operator >>(ifstream …

Hi All, I am new to C++. I am practicing loops and i need some help. This one behaves strangely. What i want is for this loop to accept numbers from 1 to 4 for options (strictly numbers) and no other characters. When executed and run, if the input is …

hi!! I installed TurboC++ version 3.0 in my computer, which runs a WindowsXP OS.... the problem is... the turboc++ window opens in my screen but i am not able to use my keyboard as well as my mouse within its window, hence i am not able to work with it …

Hi, I am trying to generate a list of random numbers where each number in the list is a individual string. This is my code so far: [CODE]import random def make_secret(numdigits): a=[] secret = random.sample(range(0, 10), numdigits) for i in secret: a.append(str(secret)) return a[/CODE] An example of what i'm trying …

Okay i'm really sorry to have basically bombarded this forum but this is my last cry for help on this project I swear! I guess many of you are intimately familiar with what's happening so far, and thank you all so much for putting up with me =) I've got …

hey , my question is that suppose we have an application runnig . it has a jlabel with some text and now in some function i change the text by using setText()func and continue with some other stuff in the function , now the text that i changed is not …

okay, I'm trying to create a new instance of SimpleCanvas through the FlagDrawer object. I need the SimpleCanvas to be scalable. I can only use the two instance variables and one constructor given to me. What I'm trying to do now is take the class instance variable (int) size and …

Hi everyone. Today i have been playing with templates and decided to make a generic question and answer function using templates to allow you to choose the return type for each call. Code below. [code] template< class T > T qAndA(const std::string Question,const T retType) { T retVar; std::cout<<Question<<std::endl; //ask …

Yet another thread showing how awful I am at programming... I've got a list called week_pattern It contains a list of 52-character strings which represent whether something occurs in a certain week. The list is below: [CODE]['0000000000111111111100000000000000000000000000000000', '0000000001000000000000000000000000000000000000000000', '0000000000000000000000000011111111000011100000000000', '0000000000000101111100000000000000000000000000000000', '0000000001111111111100000000000000000000000000000000', '0000000000111111111100000000000000000000000000000000', '0000000000000000000000000001111111000001100000000000', '0000000000111000000000000000000000000000000000000000', '0000000001111111111100000000000000000000000000000000', '0000000000000000000000000011111111000011100000000000', '0000000000000000000000000011111111000011100000000000', '0000000000000111111100000000000000000000000000000000', '0000000000000000000000000000000000000000001000000000', '0000000000000000000000000001111111000001100000000000', …

[CODE]int main() { int ival=12 , ival2 = 14; int &ref=ival; ref = ival2; cout<<ref; return 0; }[/CODE] That code shows an o/p as 14? How is it possible ? i thought references were not reassignable ? 1 more thing- do references occupy seperate spaces in memory like pointers ? …

MY question is, like we do for integer and float, Integer.parseInt(args[0]) Float.parseFloat(args[1]) How do we take character input from command line ?

I have the following code: [CODE]import java.util.*; public class Final{ private double guess = 1; public Final(double x){ root(x); } public double root(double b){ double rez = -1; if(Math.abs(guess*guess - b) < 0.001){ rez = guess; } else{ guess = (2/guess + guess)/2; rez = root(b); } return rez; } …

I would like to set and display a score that varies on how fast the correct answer was made. For example..a question would be answered for only a minute..and the score would be 20points for answering in the range of 1-10 seconds, 15points for answering in the range of 11-30 …

Hello Friends, Any body help me to convert the code from Delphi to vb 6.0 const C1 = 43941; C2 = 16302; function BorlandEncrypt(const S: String; Key: Word): String; var I: byte; begin SetLength(Result,Length(S)); for I := 1 to Length(S) do begin Result[I] := char(byte(S[I]) xor (Key shr 8)); Key …

i want to insert rows one by one into a database in the sql server 2005. the problem is that i have tried all possible but the rows just dont get added to the database, i get an exception on executing this code, i get this exception Unhandled Exception: System.IndexOutOfRangeException: …

Hi, I have abstract base class with some kids deriving from it. I want its kids to be concrete classes But I don't want to implement the all methods of the class. I'm trying to find a trick to go around doing this and I'm running out of thought on …

Sorry about asking all of these questions, but I am making an app and I have had a request for when the user types into the text box he can automatically hit Enter and it will navigate to the specified destination. However I have tried EVERYTHING and I cannot get …

How do I configure the PasswordRecovery object so that I can pull the password from the webservice rather than allowing direct access to the sql server database? Where does PasswordRecovery even do the sql for getting the users password from the database? All the examples I've found show the PasswordRecovery …

I have two forms. Form A and Form B. Form A has a datagrid that is populated from a SQL Database Table query. When a button is pressed Form B is launched that allows you to add a record to the database table. I need for the datagrid to be …

i am trying to review what C++ stuff i have learned last year before high school starts, but the code i am writing does not run properly after i compile it. the code compiles the code does not execute. the code does not execute after Recruit() runs C_Name() to get …

Hello there my second topic I need to write a function that writes 10 random numbers into a file. I came up to this point: [CODE]#include "stdafx.h" #include <iostream> #include <fstream> using namespace std; int main(){ ofstream outfile("C:\\Random"); //Random as in you can put any file you want for(int i …

I want to display date and time on top of the form where normlly written form1 forms name i want to display date in formate of for example 23 August 2010 and time in this formate 12:33:20AM Please please help.

Hi All Can someone pls help me on this one. Under nested 'if' conditions inside 'case', i have 2 sections. If i choose to go to section 1 or 2, when i am done, how can i return back to the primary 'if'. Any help will be highly appreciated. This …

Hi, I have a software which contains a jar file. To use it I need to type "java -cp IPC.jar ipc.IPC -c CCl4 -t > CCl4.txt" in the command line. I want to invoke this in C#. I used this following code but it is doing nothing, no errors. [CODE] …

I'm trying to write a Windows App that will let me write or draw in a window and still see what's below. Kinda a transparent Notepad with Borders. It's easy to create a transparent Window using: CreateWindow() with wndclass.hbrBackground = (HBRUSH) 0; But in the CALLBACK WndProc() where I'm drawing, …

Dear All, I'm trying to sort a list of structs using STL library. [CODE] struct myStruct { int i; string s; }; bool compare(int first, int second) { if (first < second) return true; else return false; } int main() { list<myStruct> myList; /* Pretend that myList has elements with …

Hi coders,I have a small problem regarding pointers, I am a bit weak in pointers and need to understand why the following is wrong: [CODE] int main(void) { char *a; gets(a); return 0; } [/CODE] This causes an exception, please explain the error. I am using Turbo C as compiler, …

[CODE] Integer i = 5; Integer j = 5; if (i == j) System.out.println("true"); [/CODE] ^ Prints true [CODE] Integer i = new Integer(5); Integer j = new Integer(5); if (i == j) System.out.println("true"); [/CODE] ^ Does not print true. I understand that in the second case, the == is …