The JPasswordField included in Swing exhibits a strange behavior?it moves the caret to the right as far as the width of the character you already typed. The problem is that

You should always prefer to cache commonly used select lists in the Application object. In a typical Web application, you make a database server trip to get to the list.

Browsers Targeted: Internet Explorer 4+ You can retrieve any component of a date (either as a string, a hash-delimited date expression, or a date object) with the DatePart() function in

Question: Why do certain things like tables and frames work fine with Internet Explorer but not with Netscape? Answer: There are many differences in the way the two major browsers

Question: How can I retrieve a file’s properties? Either using an API call or a VB Control (i.e. version information)? Answer: To retrieve the file properties displayed on the property

Question: We have several applications developed in VB. What are the best alternatives for making these applications Web-enabled, and what are the advantages and problems associated with them. Answer: If

Browsers Targeted: Internet Explorer 4+ The SrcElement DOM object is generated any time that an event is called, and it contains the element that called the event in the first

If you’re looking for a “house style” of naming convention, you can adopt the one used in Standard C++. It uses all lowercase letters for identifiers, and underscores as word

Can you tell what the following declaration means? void (*p[10]) (void (*)() ); Only few programmers can tell that p is an “array of 10 pointers to a function returning

The C99 standard defines a new version of the function sprintf(), namely snprintf(), with the following prototype: int snprintf(char * restrict s, size_t n, const char * restrict format, …);

Every compiler has a tokenizer, which is a component that parses a source file into distinct tokens (keywords, operators, identifiers etc.). One of the tokenizer’s rules is called “maximal munch”,

One of the new features in the recently approved C standard C99, is the restrict pointer qualifier. This qualifier can be applied to a data pointer to indicate that, during

You can view a list of the processes currently running on your server by executing the sp_who system stored procedure. You can also view a list of active processes by

Browsers Targeted: Internet Explorer 4+ If you want to find out the number of days, weeks, months, etc. between two dates, you can take advantage of the VBScript 5.0 DateDiff()

Question: Can I pass a date with the query string? Will the slashes cause a problem in this example? testing.asp?date=03/01/00 Answer: Yes they will. You will need to “encode” the

Browsers Targeted: Internet Explorer 5 Tree structures appear quite often over the ‘Net, and they are becoming especially prominent in the face of the emergence of XML. Fortunately, tree structures

The following example program prints out both the total and free memory sizes, allocates a chunk of memory, and then prints the memory sizes again. If the initial size of

Font properties that affect the rendering of strings are represented by the FontMetrics class. You can determine the FontMetrics of the current font in a graphics context with Graphics.getFontMetrics(). If

Consider this scenario, you define a public static final variable in one java file, and access the variable in other java file. Now, if you change the value of static

Question: How can I discover the size of a remote file stored on an HTTP server? Answer: The HTTP protocol supports the transfer of extra information about thecontent referenced by

Question: How do I find the size of the heap memory that is available for Java program? Answer: The maximum size of the Java heap is fixed by the JVM

Question: I want to collect form data in a JSP page where the form issubmitted by one of many possible links (possibly passing values usingURL rewriting). In one case, I

Question: In VB, you can release the object’s memory with the following: set object = nothing How do you accomplish the same thing in Java? Answer: The analogous way of

Question: How do I do a string comparison where I want to determine if onestring is contained within another? For example: Str1 = “Degree in IT”;Str2 = “Diploma or Degree

Question: How do I pass both the option value and option label parameter through ASP? select one Answer: Create a hidden input (text) box within the form: Then, write code

Question: My Java server compiles perfectly, but when I try to run it on mymachine I get an error when it tries to open up the ServerSocket onport 2525. I

Question: On a POSIX-compliant system, is there a way to get the process ID ofthe JVM running the current code? Answer: There is no standard means of obtaining the process

Question: I have a ResultSet created using JDBC and it contains some datefields. Now I want to subtract one date from the other. Howdo I do this? Answer: Date arithmetic

Question: How can I force a reload of a JavaBean that is being used in a JSPpage? The problem is I am developing a JSP-based Web application andI need to

Question: I have two tables: Items_table: Item_id (primary key) Description (foreign key) Item_priceDescrip_table: Description (primary key) Item_type How do I enter information into the two Description columns simultaneously? Answer: An