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How to Make a Swing Component Appear and Disappear

Here’s a very short bit of code that will make a StatusBar hide or show, accordingly: public void viewStatusBar() { /* Hide or show the statusbar */ StatusBarPane().setVisible(!(StatusBarPane().isVisible()));} Just have

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Encapsulate Member Objects

Objects frequently contain member objects that need to be exposed.Often, these are not correctly encapsulated, which could lead to problems that are difficult to track down.Consider a Circus object, which

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Communicating With XML Files

Start a new VB project. Add a form (or use the default one). Then, add these four buttons on the form: create (cmdCreateFile), read (cmdRead), append (cmdAppend), and delete (cmdDelete).

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Avoid Hungarian Notation in Public Interfaces

Most coding standards recommend the use of Hungarian variable naming, which uses prefixes to indicate the variable’s type. However, these naming conventions usually should not be used in a component’s

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Getting MAPI entryID’s From Outlook Folders

This tip is useful if you do Outlook automation with user created Outlook folders. These folders cannot be accessed by the GetDefaultFolder method usually employed in automation techniques. This snippet

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HTML Doc Add-in

This handy add-in creates code headers in VB source and HTML documentation for VB projects. When you run HTML Doc the first time, it will create all these headers with

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Create Your Own VB Add-Ins

Why should you createAdd-Ins? We programmers always feel that we are short of several features whileworking with Microsoft tools, it seems that Microsoft hasn’t yet developed thetool we needed. In

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Use Refresh, not DoEvents

The DoEvent statement should be used only to give other portions of your program to be reactive to the end user’s actions. Instead, many VB developers use it to force

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Delete a folder and all its subfolders

The RmDir command can delete a directory only if it doesn’t contain files or sub-directories. If the directory you want to delete does contain other files or, worse, subdirectories it

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Swap strings the fast way

Consider the usual way of swapping two strings: Dim s1 As String, s2 As StringDim tmp As String’ initialize the strings s1 = String$(1000, “-“)s2 = String$(1500, “+”)’ do the

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Serializing and Deserializing Arrays

Suppose you want to store the movements of a chess game in a file so that when the program terminates, the users can resume it later from the same point.

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Checking the Current CLASSPATH Programmatically

Often, it is helpful to find the current classpath. This can be done from within a Java program by using the following code: System.out.println(System.getProperty( Related Posts HTML Input Placeholder AttributeLabour

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What Is a Thunk?

The term thunk dates back to the days of the antediluvian Algol programming language and has stuck since then. A thunk is an invisible and parameter-less function or procedure that

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DLLs and Dynamic Memory Allocation

Dynamic linking — either in the form of shared libraries in Unix or Windows DLLs — is not defined by standard C++. However, this is a widely used feature among

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An Alternate way to Define Constants in Java

A typical way in which constants or global variables are defined in Java is to define a class so it stores all the constant variables which are marked as Related

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Obtain Exception’s Stack Trace as String

It is sometimes necessary to get the exception’s stack trace as String (for logging, reporting, etc.). Unfortunately, the Exception class itself provides only the getMessage() method which does not include

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Variadic Macros

The concept of a variable argument list is rather common: void f(const char *format, Related Posts Set Up a Database Dialect in Spring BootHow Much Does It Cost to Build

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Provide

It is often helpful to provide a Related Posts Forrester: 100% of Large Enterprises Will Adopt HadoopAchieve Faster and More Controlled Management of MySQL Databases with Updated dbForge Studio for

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Passing a UDT(User-Defined Type) Between Forms

There is a very simple way to get around the compile error when passing UDT (user-defined type) in procedure between forms. Just declare the procedure as Friend instead of Public.Example:

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Resize the Column Headers to Fit the ListView

This function resizes the column headers to fit the ListView. It can be used in the Form_Resize event or just in Form_Load. ‘Module: Module1Option ExplicitPrivate Type RECT Left As Long

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Get Started with JBoss Application Server

he JBoss Application Server is an open-source EJB solution that deserves your attention. Why? Because not only does the JBoss server have some impressive features that Weblogic, WebSphere, and the

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Essential JavaScript: 8 Cross-Browser Solutions

here’s a core set of problems that every JavaScript developer will run across sooner or later. In my Web Developer classes, I’ve noticed that some questions arise repeatedly—they’re common problems.

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Not Much to ‘C’ in C#

# is getting a lot of attention these days?so much attention that some DevX readers have begun to remonstrate on what they consider excessive coverage, especially for a language that

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Form-Building Routines III—the Conclusion

f you’ve been following this series, the last couple of articles (see Resources) focused on writing some useful “form-building” routines in ASP pages. I’ll continue this month by developing routines