Software Development Forum

Hi folks. I am learning java from past 5 years and constantly upgrading myself and excited to know interesting classes of java. Whats your favourite class in java? Plz share if you find any new interesting inbuilt class that comes in jdk or even 3rd party is also fine.

So the mission here is to have all the user input data to display to the display panel. I was able to achieve this, however instead of the info display after I click the display button the info will display after clicking on any of the radio button options. Im …

I know that java.long.String is an immutable class. I need to know different ways on to how create an immutable class in java. What are the pros and cons of immutable class

guyss i just want to ask if anyone could show me a sample program on how to count the number of words,letters,and sentences in a file....using the c language.... thanks in advance!!

How to pass password using scp in commandline SCP <filename> <user>@<Toserveraddress>:<path> Here i want to use password also , how can i use ????

This program works fine, but I need help with the date validation. I have a regular expression that checks for dash patterns and integers and that is all. Is there some way I can add a date validation that can check for improper dates and leap year? If so, is …

Hello, I just have a quick question, I have two while loops that don't quite do what I want while (e == true && num != 1) { do statement } while (e == false && num !=1) { do different statement } if (num == 1) { System.out.println(value); } …

Hello, I am trying to understand what a byte array is. public class ByteArrayExample { public static void main (String args[]) { byte[] array = "1".getBytes(); System.out.println (array); } } The output of this program is : [B@44770739 Is this a hexadecimal representation? If any of the members can explain …

Enroller.cs using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; namespace HRSYSTEMPROJECT { class Enroller : IEnroll { #region IEnroll Members public String Enroll(String a,String b ,String c,String d,String e) { return a; return b; return c; return d; return e; } internal string[] Enroll() { throw new NotImplementedException(); …

hi, may i know how to compile visual basic 6.0 file with access 2007. I can link but when i save it in an external device and try to run th exe. in other computer, it could be run, but the connection is lost, i tried to change the location …

in this when i updated data then not updated it is deleted in update button but there is update fuction how i solve this problem that data are update????/ here is updated fuction { string constring = @"Data Source=.\SQLEXPRESS;Database=htm;Integrated Security=True"; SqlConnection con = new SqlConnection(constring); con.Open(); DataTable dt = new …

How do I refer to a file that is in the following directory in Java web app: ***webapps/WEB-INF/myfiles/filename*** I have read that this has got to do with relative paths, but I do not understand how to do that.

I am changing the phase of signal from 0 to 360 by each degree to get max voltage value.Because if i change phase of the signal the voltage also changes.I have the fallowing code to find max value. and corresponding phase void Maxphase(float *max, unsigned int *index) { *max = …

Dear Friends, There are 2 form (form1,form2) and 2 dialogbox (dialogbox1,diologbox2) in my application. When application start at that time form 1 loaded, on form 1 when button-1 click, form2(as mdi parent) and dialogbox-1 (with textbox-1 and button-1 as mdichild) show. when button-1 on dialogbox-1 click dialog-2 (with textbox-1) show. …

i am working on an application and i need to have an update feature, but when i try to refresh the contents of my datagridview to view the update ive made, the old and updated records kept on stacking. ive already tried the datagridview.datasource = nothing but nothing happened. this …

#include <iostream> #include <string> #include <iomanip> #include "mainmenu.h" using namespace std; string bookTitle[20] = {0}; string isbn[20] = {0}; string author[20] = {0}; string publisher[20] = {0}; string dateAdded[20] = {0}; int qtyOnHand[20] = {0}; double wholesale[20] = {0.0}; double retail[20] = {0.0}; void main() { // Declarations for function …

my code freezes whenever i enter 12-19. #include <cmath> #include <iostream> using namespace std; int main() { int multiples; int answer; int square; int cube; int num; cout << "Please enter a positive number less than or equal to 20: ";\ cin >> num; do { if(num >=20) cout << …

hi guys ! i want to set a focus using backspace keyascii in a maskedtext box so that when i press backspace the focus moves to the other text box or maskedtextbox, but when i press backspace and maskedtextbox is empty with length "5" the focus donot move to the …

I'm trying to build libgd and can't seem to get past this error. It configures without error but when I go to make Install the below error occurs. Would anyone know how to get past this? WinXP, MingW. Thanks. gdfontg.c:4380: error: variable 'gdFontGiant' definition is marked dllimport gdfontg.c:4380: warning: 'gdFontGiant' …

I need a perl script to extract the starting and ending positions of a column here is the input HETATM 7749 C1 NFG A1001 -31.772 -7.604 -23.847 0.80 61.71 C HETATM 7750 O1 NFG A1001 -30.806 -8.518 -23.305 0.80 65.42 O HETATM 7751 C2 NFG A1001 -32.987 -7.507 -22.895 0.80 …

Hey there, my code is nearly perfect, but I need help with my input for a value. here's the snippet of my code: cout << setw(15) << right <<"$" ; double Amount; input >> Amount; cout.setf(ios::showpoint); cout.setf(ios::fixed); cout.precision(2); cout.width(8); input.ignore(); cout << Amount << endl; i know that input puts …

Hi! As the headline suggests I am getting the following error message: First-chance exception at 0x00d690d1 in Nyår.exe: 0xC0000005: Access violation reading location 0xcccccccc. Unhandled exception at 0x00d690d1 in Nyår.exe: 0xC0000005: Access violation reading location 0xcccccccc. #include<iostream> #include<cstdlib> #include "Participantsregistryhead.h" int main() { _CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF); ParticipatorRegister Registry; Registry.typeOut(); …

I have a Code::Blocks project that includes a perl script which creates a c++ source file containing a linked list; the linked list is built by parsing special comments that may be included in all of the project's other .cpp files. The script is desinged to automate the creation of …

I am using turtle graphics with Tkinter however the problem is that the turtle graphics window comes over my root window and covers it! Is there a way to solve this? Note: i am using turtle inside functions if that makes any difference... import ImageTk import tkMessageBox from Tkinter import* …

A closer look at the Tkinter GUI toolkit Toplevel Window and how to lift and lower it respective to other windows.

Hi guys! Badly need your help. I'm working on a project in VB.net that will enable my application from sending SMS. I already have the code but I'm getting an error which is "The port 'COM15' does not exist." I've tried to search this error in google but it didn't …

hi m following [this link](http://www.c-sharpcorner.com/UploadFile/0146e3/crystal-report-in-visual-studio-2010/) for generating crystal report in visual studio using c#. but in the above tutorial the database is created first and then reports are generated. but in my scnario i already have connected with database. now is it possible to generate report from existing database???? if …

Hi all, We have just upgraded our btinternet router, and they gave me the old one to experiment with. The router is identical to [this one](http://upload.wikimedia.org/wikipedia/commons/7/71/BT_Home_Hub.JPG). A friend thinks a script would have to be written in C++. The router has all of its config stuff on a web interface, …

#include <stdio.h> #include "genlib.h" #include "simpio.h" #include "string.h" #include "ctype.h" typedef struct { char name[30]; int apousies; }telikaT; void ypologismoi(FILE *inArxeio,telikaT students,int *p100,int *pAll); void emfaniseis(FILE *outArxeio,telikaT students,int *p100,int *pAll); main() { FILE *inArxeio,*outArxeio; telikaT students[30]; int p100,pAll; ypologismoi(inArxeio,students,&p100,&pAll); emfaniseis(outArxeio,students,&p100,&pAll); system("pause"); } void ypologismoi(FILE *inArxeio,telikaT students,int *p100,int *pAll) { char …

can u please help me to make this program..a program that decide and accept y for yes and N for no.y to repeat the process and no for the exit of the program.. ASAP PLS..TENKS

running into an issue haven't seen this before where content during the encoding and decoding of an image looses byte count. I have an app taking the photo image and sending the file via: ----------------------- byte[] imageBytes = new byte[(int) imageFile.length()]; inputFile = new RandomAccessFile(imageFile, "r"); inputFile.read(imageBytes); String base64String = …

If u run this code then click on the button helicase, u'd notice that there is a space btw radiobutton 1 and the rest! why? how can i fix this? I am sorry i know my code is too long but i don't know which section of it was causing …

I am trying to write a function that helps to find a smaller 2D array in another one . I wrote it but the problem is that it always finded the array when it didnt exist . the only thing I want is that to say does it exist or …

I've been planning a certain program for 3 years. During these 3 years, I've let thoughts and ideas formulate, and stew, in order for me to critique them properly. I know precisely what I want this program to do. For almost every function I know what as a client I …

# This program reads numbers from a file into a list. def main(): # Open a file for reading. infile = open('text.txt', 'r') sentences = infile.readlines() # Read the contents of the file into a list. infile.close() # Close the file. index = 0 # Convert each element to an …

hi, just a simple question on a wx.TextCtrl element. i have this text field where on an application, where the user can add a string on it. i want a text field with a red text on it. so i've generated this code: self.hRepositoryTextfield = wx.TextCtrl(self.hPanel) self.hRepositoryTextfield.SetDefaultStyle(wx.TextAttr(wx.RED)) if the user …

Develop a telephone directory which is capable of doing the following: 1. Insert a contact 2. Delete a contact 3. Edit an existing contact (changing or modifying a record) 4. Search a contact (and display complete record on screen) a. Search through first name b. Search through last name c. …

I want one picture to be displayed in the canvas then the another to be displayed in the canvasafter 2 seconds. i used time.speed(2) and canvas.delay(2000) but nothing works! Any help please?! import ImageTk import tkMessageBox from Tkinter import* from turtle import * import time root = Tk()#main window canvas …

Hi - I'm trying to make a databse with the produkts from McDonald, but i can't figure out how. It is supposed to both read and write. Here's what i've made so far... Hope U understand: #include <iostream> #include <fstream> using namespace std; struct Menu { char navn[50]; int pris; …

Hi there I need help writing a data structure to hold and assign data to a particular unique ID. I think I want an vector of structures: struct Data { int ID; double latitude; double longitude; int speed; int altitude; }; I receive messages in the above format, they can …

Review for a final and I had a question... You are give a hash function h(x) = x%11 and the size of the hash table is 11. The inputs are 4371,1323,6173,4199,4344,9679,1989. What would the resulting hash table be using quadratic probing. Would I start with 4371 and then do the …

So this is basically what's supposed to be the outcome of my code: > 69:hw/05/src> javac WordOccurrenceCounter.java 70:hw/05/src> java WordOccurrenceCounter Reading the book... Getting counts from a TreeMap... Enter a string ('q' to quit): wealth wealth occurred 7 times. Enter a string ('q' to quit): poverty poverty occurred 10 times. …

How should i implement the very basic singly linked list in C++, i am having a paper in just 20 days and i dont know a bit about this stuff,,, How to add data to it ,, as there is only one data item in single linked list and one …

Hello, I am supposed to write recursive program. I have done this below, however I don't know if my understanding of recursion is correct. I believe that it is a method which calls this method inside. In my case (insertCommas). private String insertCommas(String str) { if(str.length() < 4){ return str; …

Hello, For an assignment I have to implement some search algorithms in order to solve the travelling salesman problem, I understand the problem and I understand how the algorithm works, I simply don't know how to implement it (my Java isn't great) but this should really be the easy part …

Hello Internet. So the task is to create our own parser for a expression calculator. For Example: Input: 3+2*1-6/3 Output: 3 Input: 3++2 Output: Invalid Expression Input: -5+2 Output: -3 Input: 5--2 Output: 7 The code [Here](http://www.technical-recipes.com/2011/a-mathematical-expression-parser-in-java/) solves a part of the problem except that it has a fixed input …

How do I save the inputs given from Edit control into a text file??? I am really new to Windows programming.Can someone please help me out. Thanks in advance.

Hello to everyone, i recently started to learn c++ with this book "Jumping into C++" from Alex Allain. In this book there is an example of a program to get the prime numbers from 0 to 100 that Im not understanding! For what I think I understood the second loop …

hi! i want to open a word document directly from a windows form application running on visual studio 2010! i tried a particular code but it wont work!!! this is the code! [CODE]this.Application.Documents.Open(@"C:\Test\NewDocument.doc");[/CODE] i also imported and used the following header: [CODE]using Microsoft.Office.Interop.Word;[/CODE] it says that the word application does …

I have ran into an issue when programming a plugin that is dependent on another plugin. The plugin in question has 3 different versions, all of them are incomparable with each other. Instead of writing 3 separate plugins, I would like to know which .jar file exists, and import the …