Software Development Forum

Hi, I have a few basic doubts in java . Statment: class MainExample1 {public static void main(String[] args) {}} class MainExample2 {public static void main(String []args) {}} class MainExample3 {public static void main(String args[]) {}} 1.What is the difference between the above three statments.? 2.Why main method should be declared …

I use windows-xp python 2.6 Could I have your help. I need to hide and then show a Tkinter root window. And also "remove" the exit, minimize and maximize options. I can't do it like this! root.hide() #do some stuff root.show() Root.hide works but root.show doesn't. No Exception thrown. :(

Hello all! i am a beginner to network programming. I am trying to make an application in vb.net 2008 where in i can open a file from the client computer, do some changes to it and save it back. Can someone please throw some light on how should i go …

/* In the following method, why the factorial goes wrong when n>12 ? */ static int factorial(int n){ int fac=1; if ((n<0) || (n>12)) return -1; for (int i=2; i<=n;i++) fac *=i; return fac; }

Hi, Can any one tell me the what is the difference between Identifier and Variable? Thank you, With Regards, Prem.

hi gd I am karthikeyan. can any one help me how retrive and delete data in vb.net. I am using access database.

I am trying to square each number in the list under [I]nums[/I]. But I don't know how to do it. I got this so far: [code] def squareEach(nums): for i in nums: y=i*i return y [/code] What is happening here is it's counting how many numbers are in the list …

Hi Guys! I have problem coding with a vertical Scroll bar. I made a label in form1 and a vertical scroll bar next the it on the right side. The vertical Scroll bar is to scroll down the label if the label is full of text. Here is my code …

Dear All, I hope you all would be fine please help me in printing i want to take print preview of window form and after taking print preview want to take print of form how can i do this please provide me example. Thanks in advance

Still learning here... this is my method to get the record count of a table ... it works, but it seems like a lot of coding for something so simple. Is there an easier way? [CODE] public int GetTableRecCount(string table) { //Set up the connection and adapters... OleDbConnection myConn = …

Hello there - I have three directories. I would like to compare directory1 with directory2, then take those changes/new files and copy them over to directory3. I was given the following code: [code] #!/bin/bash dir2="d1" dir1="d2" dir3="d3" for file in dir2/*; do file_in_dir1=dir1/$(basename ${file}) if [ ! -e ${file_in_dir1} ]; …

Hello DaniWeb, This is my first topic here at DaniWeb. I have always been a great fan of this forum mostly for C# solutions. Iam a 3rd year student IT. Now I have a problem. Iam trying to make a application that checks if IP + Port is online.( it's …

i was woundeirng if anyone could help me with drawing a simple image perferably a .gif thank you.

please help me with this problem... i dont have any idea on how to make the code... Histogram is a process of representing the frequency of data in a chart. Write a C++ program that will simulate this process. Your program should read a string (only letters are allowed) and …

Hey there, I need some help with the placement of constructors and how the second constructor would work (there's two of them). All I ask is for some explanation. These are the exact instructions: The default Constructor should build a dynamic array of size 3 for the grades. Another constructor …

Hi, my app needs to have an internet connection to run correctly, so I have been trying to implement a piece of code to check for the availability of a net connection. [CODE] private void Form1_Load(object sender, EventArgs e) { HttpWebRequest req; HttpWebResponse resp; try { req = (HttpWebRequest)WebRequest.Create("http://www.google.com"); resp …

For my intro to programming class i have to design a game where a ball is shot at an angle and hits squares that are worth points. I have two questions 1.How do you get the ball to move. I was given this code but I don't know if I …

index no.student room 41 18 M.OPERASI 41 27 M.OPERASI 41 PODIUM 41 24 PODIUM 41 25 PODIUM 41 19 B 206/207 this is a part of data in a text file that i will read and place it in array and save it in another text file.. but i got …

This code is used to reverse a number in C++ but I have a problem. When I input 1010 or -1010, the output is -101 and 101. How should I fix this?[code]/* Christopher Langford U05799189 * clang4d@gmail.com * Assignment 3 Exercise 3 * July 23, 2010 * Macbook Pro w/Mac …

hello everyone.. i have a question.. i am using datagrid and binding the columns using datatable..i have grid with columns Area, name, date, country, comments. Now i have to filter the data using two list boxes with contains area and name distinct values. if user selects one location or more …

My program won't display all the text on a webpage, it basically only reads the first line. I am using a rich textbox to display the text. [code] void readrss() { try { newstxt.Text = string.Empty; StreamReader x = new StreamReader(WebRequest.Create("http://www.xample.net/").GetResponse().GetResponseStream()); newstxt.Text += x.ReadLine(); x.Close(); newstxt.Text = newstxt.Text.Replace("<", "•"); } …

Hello, good day. :) I got a problem with "passes occurred". This is the only problem left in my program. My program is about Naive Searching and Binary Searching. There's no problem with my "Naive Searching". The problem is the "Binary Searching". [b]Naive Searching:[/b] This is the result when I …

Hi guys, I want to add syntax highlighting to my text editor, and I came up with ColorCode library at this address [URL="http://colorcode.codeplex.com"]http://colorcode.codeplex.com[/URL] but I couldn't load the parsed code into richTextBox object using rtb property. The following code returns parsed html code. [CODE]using ColorCode; string sourceCode = File.ReadAllText(@"/path/to/source/file"); string …

I have an XML file that I need to transform. For one reason for another the XML contains escaped HTML data in its fields (the users are using an app I can't edit to generate the XML). [CODE] <parent> <child>%3Cul%3E%3Cli%3EBoy+this+is+fun%21%3C%2Fli%3E%3C%2Ful%3E</child> </parent> [/CODE] I know the best solution is to recreate …

Hey...I'm working on a Gaussian elimination problem...my pivot doesn't seem to work correctly...the logic must be wrong. Also, does anyone know why "INFINITY" comes up as some of my random numbers chosen? Thanks in advance for any help! :) [code] Matrix::Matrix():N(0) { //Empty Matrix by default } Matrix::Matrix(int n) { …

I have written a program that will generate a random maze and solve it. The program uses a multidimensional array of a class that holds bool values for each wall, whether or not to show an * for the path taken, and if it is a dead end. here is …

I understand that you are allocating memory for Stack, buy do not understand after :: and I thought that you only used :: when declaring classes not in the classes. [CODE] myTop= new Stack::Node(original.top());[/CODE] I can post the function class of the entire program if need be.

I have a script where I want to use a message box for the occasional interactive question [code] # python 3.1 from tkinter import * from tkinter import ttk from tkinter import messagebox answer = messagebox.askyesno(message="Are you thinking of the " + "data " + "?" ,icon='question' ,title="My guess" [/code] …

Hello there, I am able do run rmi over lan but when I want to access my rmi server from other system which is out of my lan network it doesnt work. My ip address what I check by ipconfig/all is locally assinged ip address and my ip address check …

hello everyone ,,,,i have recently installed a java version "1.4.2" in my terminal and i made it succcessfully but my problem now is how to compile a java sourcecode using the terminal..pls help me about this anyway,I am using a ubuntu flavor of linux Your help is very much appreciated.... …

take following class and two object definitions: [CODE=c++] class Rect{ public: enum centimeter; enum meter; Rect(double len,double wid,enum centimeter){ length=(len/100); width=(wid/100); } Rect(int len,int wid,enum meter){ length=len; width=wid; } //rest of implementation private: double length;//in meters double width;//in meters }; Rect obj1(10,5,Rect::centimeter()); Rect obj2(10,5,Rect::meter());[/CODE] two previous constructors have dummy enum …

Hi, my app does not contain a web component but it does download images from the web into pictureboxes. I am trying to figure out how to code a progressbar on my app that would start when the form is loaded and increase gradually until all the pictureboxes have been …

HI why do we use get/ set to change properties? I mean instead of writing [CODE]class Point { double x, y; public Point(double x, double y) { this.x = x; this.y = y; } public double X { get { return x; } set { x = value; } } …

hi there, does anybody know how to create a user input message box in C# thanxxx

I'd like to post some code of an app I wrote to spit out large files, and sort them, and finally reassemble them. I'm new to Python, and the 'object' way in general. If you feel like it, would you please tell me how it should have been written 'properly'. …

Hi. I'm trying to make a two-dimensional array full of descriptions. As if they were map tiles for a text-based RPG. There's a point class that holds your coordinates and I use the Get_X and Get_Y functions to put into the map so it can read them. I'm just starting …

[code]class count { public static void main(String args[]) { int a=0; int i; int l=0; int b=0; int c=0; for(i=1;i<=1000;i++) c=i/10; if(i%10==0) { l=l+1; } else if(c%10==0) { l=l+1; } System.out.println("no of zeros in this string is:"+l); }}[/code] this is my code...to calculate number of zero from 1 to 1000,,,,but …

I was testing out a networking script of mine, and it worked fine locally. It is basically a replica of a very bare bones multiplayer game network, where multiple clients connect to a master server, each client can say anything that it wants, and the server redirects that message to …

I have the statement [CODE]fn = sys.argv[1] [/CODE] catching the filename at the command line when the user starts my program. The problem comes when a user uses a path with a space in it such as; 'C:\Documents and Settings\user\My Documents'. The argument parser sees ''C:\Documents' as the first paramenter, …

Hi, I have a little problem. I need to write a function that will be given a number (with unknown number of digits) and it will search the number for similar neighboring digits. I must say that I'm not allowed to use arrays (unfortunately). I thought of disassembling the number …

Hullo. I made a small webserver just to flex my winsock muscle, but it only works for small files like html files. Once I have processed the request to get the path of the file, I send the result like this: [code] ifstream fin; fin.open(URL, ios_base::binary | ios_base::in); if (!fin.good() …

[CODE]try { File realFile = new File(file); boolean rename = realFile.renameTo(new File("C:\\Dummy Files 2\\" + file)); if (rename) { System.out.println(file + " was moved succesfully"); boolean delete = realFile.delete(); if (delete) { System.out.println(realFile.getAbsolutePath() + " was deleted"); } else { System.out.println(realFile.getAbsolutePath() + " could not be deleted"); } } else …

Hi there, I have some questions regarding insert update and select queries in VS 2008. When writing select update and insert queries where should I write them. Is it in a class in visual studio or is it in the database as a stored procedure or something else. At the …

Hi Everyone, I was working with DataGridView tool in Visual Studio. I have managed to display data from my database in DataGridView. Now I have to Select some certain rows and store them in such a way, so that I can Use a loop on them and process each row …

I want to upload a text file to a access database, but the string does not work. I guess the problem is with the quote marks or something of the sort. The string is as follows: rs.Open "SELECT * FROM [" & Me.Text1.Text & "] ", objConnection, adOpenStatic, adLockOptimistic, adCmdText …

[CODE]Private Sub Command1_Click() Dim cn As ADODB.Connection Dim rs As ADODB.Recordset Set cn = New ADODB.Connection Set rs = New ADODB.Recordset On Error GoTo myerror cn.Provider = "Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\Main.mdb;Persist Security Info=true;Password=123456789" cn.CursorLocation = adUseClient cn.Open rs.Open "SELECT * FROM BA_Data", cn, adOpenKeyset, adLockOptimistic, 0 MsgBox "Total …

// find new size nNewArraySize = StrNewSizeForCharReplace(pszString, pszFindString, pszReplaceString); // nNewArry size is 1063 // alllocate memory pszTemp= (unsigned char*)malloc(nNewArraySize + 1); // add 1063 character in to pszTEmp // 1063 nLength = strlen(pszTEmp) // length is 1063 free(pszTemp); // Heap memory exception How can remove this exception

Hi team, I'm having some issues getting the results of my query to output on a data grid. I'm using an sql query to get the data from access, which is working fine, but then I want to output it onto a datagrid. My code is as follows just for …

hi everybody i dont now whats wrong whith this code below when i run it debug show an error with con.open() [CODE]Dim con As New System.Data.SqlClient.SqlConnection con.ConnectionString = "Server=iraq\\sqlexpress ; Database=stats ; Trusted_Connection=True ;" Dim com As New System.Data.SqlClient.SqlCommand com.CommandText = "insert into users values('" & TextBox1.Text & "','" & …

why doesn't this work? [CODE]int main() { fstream file; char output[100], pasword[100]; int a; const string x("Yes"); const string y("No"); string z; char b; cout << "\nEnter correct password to continue: \n" << endl; cin.getline(output, 15); if(output == "file.txt") { cout << "Change password? Type Yes or No. \n" << …