A template definition can be #included in several translation units (source files). However, each time it is #included the definition is recompiled. Using large template definitions can increase compilation time

In some rare cases, it is useful to disallow further derivation of a class. Classes that implement system API or sensitive security management are good examples for that. Declaring the

C++ defines a hierarchy of standard exceptions that are thrown at run time when abnormal conditions arise, such as when operator new fails. The standard exception classes are derived from

The preprocessor #include directive appears in two flavors: #include < vector > // angular brackets and #include “myclass.h” // quotes The two are not interchangeable. The angular-bracket version applies to

I use this routine in almost every application I develop. It’s handy whether you need a key for a collection or whether you use it in a database: Option ExplicitPrivate

This “wait” routine suspends your code and waits for the shelled process to finish. It comes in handy when you need to run another scriptatch file during your process. Use

Use this code to fill a list box with the values from a database table. The first field in the query provides the ItemData for the list: Call FillList(dbase, “select

If you write programs that access information on a network server, you never want to hard-code drive letters. Not all software vendors take advantage of the Uniform Naming Convention (UNC)

I would like to add a few things to the “Building a Better Mouse Trap” tip [VBPJ November 1996, page 56]. This approach also works for any message, including button-up

If you have an application that must run “unattended” and you want it to alert you if something goes wrong, your application can send you a message through WinPopUp. WinPopUp

Question: How can I use VB5 components from within PB6? Can VB5 deliver a DLL that we can communicate with, or are there better methods? Answer: The best method of

Question: How do I control the font size in a rich text edit? I am pulling text from a variable and applying it to a rich text edit by: rte_1.SelectTextAll()rte_1.ReplaceText

Question: I have an .exe of PB app “sales.” While I type c:sales.exe, I will also pass a parameter such as c:sales.exe auto. Now I want to access this parameter

Question: Is there a way to wrap text that is written to the TextArea? Answer: The java.awt.TextArea class does not have built-in support for wrapping text, but you can implement

Question: I am writing a presentation application and want to take a Panel and add TextFields and maybe Images to it. Is it possible to save this Panel with TextFields

Question: I want to capture an event that signals a user’s completed update to a TextField. Answer: In general, a user will finish entering text in a TextField by pressing

Question: How can I copy the selected text from a TextArea to the system clipboard or paste from the system clipboard to a TextArea? Answer: Java 1.1 introduced the java.awt.datatransfer

Question: I’m trying to make a text editor in Java, andI want the editor to be able to make words and even pieces of words italic, bold, or underlined. It

Question: I am tring to make a stand-alone application that can read HTML files and render them like a Web browser. How can I do this in pure Java? Answer:

Question: I need to take a port number as input froma user. How can I check if the port numberentered by the user is free and not beingused by any

Question: I have an initially disabled TextField on a frame.When the user clicks a specific button the TextField is enabled. How do I set the input focus to the TextField

All the classes in sun.* that accompany the Sun JDK are provided assupport classes that are used to implement specific sets of functionalityfor the core JDK classes. The classes in

The Java core API possesses a method equivalent to the C atoi() function in Java. The java.lang.Integer class contains a method called parseInt()which will convert a String into an int.

The java.util package contains a class called Random which you can useto generate random numbers. A Random object represents a repeatingpseudo-random sequence of numbers. You can either fetch the next

The java.lang.reflect package provides an Array class through whichthe values of an array can be accessed. It is usually more effectiveto cast the array after it has been obtained through

There is no limit to the number of access specifiers (private, protected, and public) a class can have. When large classes are declared, it is useful to repeat the access

If you are trying to make an alert box that displays a message when the user passes the mouse over an image, keep in mind that unlike Microsoft Internet Explorer,

C programmers are used to dealing with multidimensional arrays as chunksof contiguous memory which can be accessed through pointer arithmetic.In Java, an array is an actual object, and a multidimensional

Aside from fitting well with the Microsoft environment, creating components and component based software also works well with the management and tracking of development teams. Components naturally divide into manageable

On NT, do you ever wonder why Performance Monitor starts up blank on some computers, and others have process monitored automatically upon start up? Well, Performance Monitor first looks for