Software Development Forum

Hello I'm planning to create a java application which calculates ip address just like this http://jodies.de/ipcalc?host=172.168.0.2&mask1=23&mask2= can you suggest an existing library, or tutorials so I could begin developing this?

Here is code, which you can play with before installing and using the [superior blist package from pypi](http://pypi.python.org/pypi/blist/). I did it as therapy after doing programming test answer using zillion of setters and getters. Motivation is basically to show why you should use properties after you need them and attribute …

So, I wrote an address book and I'm nearly done, but Im having a little trouble using the picle module to back up the input data to a file for later retrieval. Here is what I have so far: (Im working on a solution while I type this) from tkinter …

Hi I am learning event handling. I have defined my own event and raise it in class **MyEventHandle** and have defined a method to handle this event in class **HandleEvent**. In class **MyEventCall** I tried to handle my difned event but it throws an exception at runtime. I do not …

Hi I have a keylogger code which writes the keys but does not write capital letters and such that:! @ # $% ^ & * () + Someone help me with this? Here is a keylogging code: #include <iostream> #include <windows.h> #include <fstream> using namespace std; ofstream out("plik.txt", ios::out); LRESULT …

Please help me with this I really need your help. Thank you so much. #define EMPTY __________ #define DELETED __________ #define max 1100 #define setSize 20 typedef struct { unsigned long ID; char Lname[16],Fname[24],MI; char course[8],year; }Student; typedef struct { Student Stud; int link /*used to link to next synonyms*/ …

All, I am using lock() to try and sync threads writing to the same file, but my threads are still stepping on one another. Can anyone tell me why this doesn't work and how to fix it? Here is some sample code. In the real program the writes are very …

Why cant we use static and final keyword for constructor?

I'm having trouble figuring out how to fill a dynamic array function and then print it on declaration. Here is the function: Public Function SQLConductGetFields(InCommand As Object) As String() Dim ConnectionA As New MySqlConnection(My.Application.sqlconnect) Dim command As New MySqlCommand() ConnectionA.Open() command.Connection = ConnectionA Dim reader As MySqlDataReader command.CommandText = InCommand …

Hello I'm currently working with my Java program here is my code: import java.util.Scanner; public class StringAct{ public static void main(String[]args){ Scanner inp=new Scanner(System.in); System.out.print("Enter string: "); String a= inp.nextLine(); if(a=="angel"){ System.out.print("Valid"); } else{ System.out.print("Not Valid"); } } } this program asks the user to enter a string, the string …

I need to build a gift voucher section of my python cash register software Here's the code I have so far elif payment == '3': print "Scan or enter gift card" cardno = raw_input('Card Number: ') try: with open(cardno, '.txt') as f: pass value = f.readline() except IOError as e: …

Hello I want to make a C# web services for XAMPP (basically Apache). I know I have to download a mod for this but first thing is first: Where is a good guide to read on how to create a web service? Guides Ive found are either outdated or very …

I have datagridview which is populated with 8 columns also it is databound.Now my requirement is I need last column say ABC As comboboxcolumn.But if in database,this ABC column has some value for a particular row,then that value should be displayed in that row's cell as selected value.Please help me …

Hi, Please help me debug this code. I made a Stack template with two parameters: type and size. I am using it two times: first in conversion from infix expression to postfix (here, <char,50> stack is used), then in evaluation of postfix expression (here, <long double, 50> stack is used). …

Hi, I am new with the WPF Browser Application in VB.Net. I would like to know if how can I execute a windows form or a page. I had tried to this code: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button1.Click Dim Form As New Window1 …

I would like to know about the following code, could anyone tell me, please? .text:004027A0 sub_4027A0 proc near ; CODE XREF: sub_401010+118-p .text:004027A0 .text:004027A0 var_404 = byte ptr -404h .text:004027A0 .text:004027A0 sub esp, 404h .text:004027A6 lea eax, [esp+404h+var_404] .text:004027A9 push 1 .text:004027AB push eax .text:004027AC call sub_401CC0 .text:004027B1 add esp, …

Hi, I am new to XML. I have doubt. I am updating value of XmlAttributeCollection in XmlElement, whether my XmlElement gets updated or I need to go with some method to update my value in XmlElement. Here my code, XmlElement xntemplate = xmldoc.SelectSingleNode("//TableTemplate//ColumnStateXML//state//colref [@id='" + sPropName[1].Trim() + "']") as XmlElement; …

Hello, As I am building a pos and inventory software in vb 6.0 with Ms-Access as database, I am building the face of the software where I have one MDImain form with toolbar and menus and related some mdichild form holding different informations (I have attached the image).  …

I try to insert data from VB.NET form to SQL Database Table. When i press insert Button. It shows Successfully Added. But there is no data in database table. My code is given below. Private Sub BTNSAVE_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles BTNSAVE.Click CheckMyControls() If totflag = …

I'm trying to delete an old desktop shortcut on program startup. Only this code isn't working. ' Get rid of the updater icon on the desktop. Dim DeleteShortcut As String DeleteShortcut = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) & "\Sample Shortcut.lnk" If System.IO.File.Exists(DeleteShortcut) = True Then System.IO.File.Delete(DeleteShortcut) End If Looks pretty straight forward- but just …

HI! I want to write a constructor that will make a window (a frame). I want to be able to insert the height, width, position and window color. This is what I've written: public Window(String name, int height, int width,String c,String isActive,int PointX, int PointY){ setTitle(name); setSize(height,width); getContentPane().setBackground(Color.c); setLocation(PointX,PointY); setVisible(isActive.equals("active")); …

Hey guys! I dont know what happend to my app...It doesnt run anything but the code previously saved.For example if I write some new code to button1 it doesnt do anything.Actually I can Erase all lines of code in the whole form and it still someway does run like it …

Hey, I want to build some form application for Windows and i have tryed usind VS2010 but because IntelliSense is disabled for C++ i'm not able to work normaly as i'm fairly new to programming and i need to see the drop out menus after i use the "->" operator. …

Hi there everyone, I am a novice at java and this one has me stumped. This is the beginning of a tax calculator but I am getting irregular output from the getIncome() method. It starts fine, letting the user enter income figures, but on the third income entry or so, …

Hi How can I create a recursive method that counts how many files with a certain file extension, which is in a directory and the directory's sub directories. Exceptions that can be thrown in the search of the file tree should be handled appropriately. The user of the program should …

How List.Sort() indecates where the salaries in the list will be ordered and how to be ordered (asc or desc)? using System; using System.Collections.Generic; class Employee : IComparable<Employee> { public int Salary { get; set; } public string Name { get; set; } public int CompareTo(Employee other) { // Alphabetic …

I am a newcommer to java programming. i wrote this which compiles without error. when i put an int value like "5" it runs without any problem but when i puts a double value like "5.1" i get error. What is the problem? package javaapplication1; import java.util.Scanner; // Scanner is …

Hi I try to write this program but how I think math? A general store has the following offer. If you shop for a minimum of 200 $ will receive a 5% discount on the full amount. If you shop for at least 400 $, you get 10% off the …

I am doing a syntax highlighter (which is my first c# project) and I have some performance problems. Every time I have to color a word, I stop the repaint, color the word, enable repaint and invalidate the richtextbox. This is the richtextbox class: namespace test { class rtb:RichTextBox { …

Hi, I am coding some python to work with some wireless serial devices. I have 2 devices reading temperatures and other environmental data over an Xbee which then writes the data over serial. The data looks like this when read in Hex: *7e001090007d33a200408b2e0c2db7010016005763* The important character is the 7e at …

Suppose my long sequence looks like, 5’-AGGGTTTCCC*TGACCT*TCACTGC*AGGTCA*TGCA-3 The two italics subsequences (here within the two stars) in this long sequence are combinedly called as inverted repeat pattern. The length and the combination of the four letters such as A,T,G,C in those two subsequences will be varying. But there is a …

Hello I am looking to make an application that performs basic data analysis techniques. I want to read and write into excel files, any pointers will be much appreciated! thanks!

Hi, I am working on a java web application using Spring MVC framework. The application is running fine. I am writing some JUnit test cases for some of the pojo classes inside the webapp. I created a separate source folder 'test' which is in parallel to the src folder. I …

hi everyone. I want to delay the click event in a vsFlexgrid so that the double click event will run 1st. I used a timer for the delay in the click event and managed to get the value of the double click speed in the windows library for the timer …

Hi, i want to calculate elasped time in Mintues excluding after 6pm and the weekends. for instance i have a start time on 2013-01-11 2:37:20 PM and need to calculate the time difference with repect to current time(NOW) in minutes by satisfying above 2 conditions. i've been trying to do …

Hello everyone. I am trying to build a inventory and pos software with vb 6.0 and MS-Access as database. In one of my form I have the following code to call my inventory of a certain invoice number to print tag for my products. I am using a MSHFlexgrid with …

This is probably a rather simple problem, I haven't looked at any Java in some time and am having trouble with this. First off, here is my program: it's very simple, because I cant even get past here without getting several errors. On Line 6, it says "unreported exception FileNotFoundException; …

I was working on a project on netbeans and came across a problem with netbeans. The netbeans was showing the error repeatedly as "duplicate class". eventhough there is no duplicate class in the project. After so much frustation , i realized that this is netbeans bug. After doing some search …

'the code is working properly only problem with this code is when the first line ends in excel and data is inserted in next Row "instead of inserting another row it copies the same content which is inseted last time in form "

In the following script I can't get the variable STARTPOINT to increment by 3 each time through the loop. I con't get it because the variable NUMBEROFGROUPS is incrementing by -1 each time and both increment lines look identical to me. #!/bin/bash set -x leading_zeros() { local NUM=${1} local NUMBEROFDIGITS=${2} …

How to write C# Code to Send and receive message through HSDPA Dongle? Currently i am working on a library management project, on this project i need to send overdue details of books to the user via a sms message using HS-DPA Dongle ( HUAWEI 1750). Please someone help me …

hie people, could anyone tell me what's wrong with following code: Dim cmd As New SqlCommand("SELECT * FROM Security_Ques WHERE Username = " + txtUsername.Text + " and Ques_Index = " + cmbSecurity_Ques.SelectedIndex + " and Answer = " + txtSecurity_Answer.Text + "", con) because it is raising an exception …

Hey people, here is a question that is troubling me from quite a long time. I want to diable the (x) button on form_load event, to prevent user from directly closing the application. How may I achieve this ?

Hello everyone! I am tring to use Tkinter from terminal (I'm on a mac) and I keep raising AttributeErrors on both Python 2.7 and Python 3. For 2.7 I input: >>> from Tkinter import * >>>win = Tk() >>>f = Frame(win) >>b1 = Button(f, "One") and I raise the AttributeError: …

Hi, Does anyone give me the suggestion about "InvokeRequired"? I can't find "Controls.InvokeRequired" in vb.net2003. I want to write a simple data updating from "Mulitple Thread", but I would like to check whether "Controls" are requied "Invoke" or not. Thanks and regards

I am going to begin learning Java but I want to get a book (2-3 books... one being easy, intermediate, and advanced). I don't mind buying the books (the price doesn't matter either). What are some books that are most perfered by you guys? I currently i am learning it …

Hello. I have this code from http://zetcode.com/tutorials/javagamestutorial/sokoban/ and I want to change the image of the baggage when it's on the right place. Do you have any idea of how should I do this?

I've written a short tutorial how to get started writing sql database applications with C#. The totorial is in PDF format so that you can download it and read at your leasure. It assumes you are using MS-Windows and Visual Studio 2012. If you are using an earlier version of …

Hi! I am supposed to write a programm for making a window.First of all, I must make a window with some given default values. Below is the code that I have been given as a template public class Window { private String name; private int height; private int width; private …

I have made this RSA encryption program but it crashes when it is finished decrypting the line. What is wrong and how can I fix it? #include <iostream> #include <string> #include <cmath> using namespace std; bool IsPrime(int p); int main() { int p, q; int n, phi; int e, d; …