Question: I’m developing some applications with servlets. I’ve been declaring static variables to preserve state, but when two instances of the servlet run at the same time, the second instance

Question: Is it possible in Java to increase an application’s stack size? Answer: The stack size of an application can be set at run time depending on the virtual machine

Question: I want to connect to an Access DB on a server from a client using a VB app. I assume I would have to make a connection to the

Question: In my Web clipping app, I have a form like this: When I submit the form the query string looks like this: myserver.com/results.cgi?var1=xyz&var2&var3=abc The problem is if a form

Question: I have a client that used to be an Oracle programmer years ago who tells me I’m designing his SQL 7.0 database all wrong because I’m using joins in

Question: I have a bunch of words in a listbox that I want to spell check(with Microsoft Word 2000 maybe?). I would like the routine to delete any word in

Question: We have co-located a Windows NT Exchange 5.5 SP3 server with our ISP and we have about 14 Outlook clients running from our office. All of the Outlook clients

Question: How can I access an ASP page through VB? Answer: You can use the Internet Transfer control to connect to a web page and retrieve data from Visual Basic.

Question: Consider the code: template class TestClass {public: T testFunc(T*);};template TestClass::testFunc(T* p1){ return sadfs; //actually, here I could //write anything I want} The problem is that VC++6 compiler doesn’t track

Question: What does the ‘const’ in the following funciton prototype mean? class A{public: void fn (int a ) const;} Answer: The const after a member function’s parameter list indicates that

Question: How do I maintain sessions in Nokia WAP Server? Answer: Session variables are covered in the WAP Server documentation.

Question: In the WHERE condition, I have not been able to use the AND condition when the two conditions on either side of the AND command relate to data the

Question: I have accidentally deleted the ‘From’ column from my inbox. Could you instruct me how to get this column back? Answer: Right-click the header of any other column (like

Question: How do I host another domain into a single server if it has a different DNS server than mine? I have my DNS from a local ISP; the other

Question: I have a lone Macintosh user among an office of Windows users. This user has Outlook 8.2 running, with all mailboxes stored on the server. Understandably this is quite

The standard way to delete all the rows in a SQL Server table is a DELETE statement without a WHERE clause:DELETE FROM MyTable However, in most cases you can speed

The built-in ++ and?operators can appear on both sides of their operand: int n=0;++n; // prefix ++n++; // postfix ++ You probably know that a prefix operator first changes its

You can allocate a multidimensional array using new as follows: class A{public: int j;//…constructor, destructor, etc.}void func(){ int m; A (*pa)[2][2]=new A[2][2][2]; // three dimensional array m=pa[0][0][0].j; // access member

Novices, especially those who have experience with garbage-collected languages, are often confused with the concept of object deallocation and destruction in C++. They tend to explicitly invoke every object’s destructor

A definition of namespace alias can be used to redefine a previously defined namespace alias declared in that scope, as long as the new definition refers only to the same

Question: How do you integrate an ad-serving technology (such as one by Doubleclick that enables you to rotate ads on a regular Web page) onto a cell phone or PDA?

Question: Is the IIF function valid under SQL server 7.0? It’s in the SQL Books Online as valid, but none of my stored procedures accept it. Answer: The IIF function

String in Java is a constant object, which means by default it can becreated and read but not modified. Usually developers use the Stringextensively but forget the overhead it may

Many programmers believe that by storing pointers instead of objects in a container, they improve performance. However, they forget that the pointers still refer to existing objects that must be

The stack is a region of memory on which local automatic variables are created and function arguments are passed. The implementation allocates a default stack size per process. On modern

Consider the following two classes: class A{private: int n;public: int m;};class B{private: int n; int m;}; Theoretically, the memory layout of these two classes may be different because A has

To block a class from being derived any further, declare its constructor private. Next, add a public static member function Instance() that creates an instance of this class and returns