Q and A
Here Selena Sol, the author of JavaBoutique's Introduction to Java, answers users' questions raised by these articles.
Latest Q and A:
What is Deprecation?
Deprecation is a gradual retirement, the solution for methods that need to go but are still relied upon by legacy code.
Java versus...
NT vs. Unix
Selena delivers a surely-controversial comparison of the two primary development platforms.
UI Components in Java
Is Java as a good language with which to produce UI software components?
Deciding whether to use Java
Should you use Java for application development? Selena has 8 questions that will help you find the answer.
Choosing the Right Toolset for your Project
There are lots of tools to consider using for any application development project. A combination is usually best, but which combination?
Comparing Different Web Application Development Technologies
A run-down of the plusses and minuses of Java, HTML/JavaScript, ActiveX, CGI/Perl, Servlets, and ASP.
Java versus JavaScript
A lot of people still don't understand that there IS a difference.
Definitions
Defining JSP (Java Server Pages)
Explaining Sun's answer to Active Server Pages and Server-Side Includes.
Defining "interpreted bytecode"
The JVM needs to understand bytecode, you don't.
Defining "implementation-dependent"
What it means to "write once, run anywhere".
Defining "multi-threaded"
Java is built to do lots of things at the same time. Each "thing" is called a "thread".
Defining "robust"
A "robust" language is a language that is resilient to run-time errors.
Defining TCP/IP protocols
TCP/IP is a communications protocol which assures that data sent from one place on the net will be received AND understood at the other end.
Explaining Java database access and servlets
Can Java interact with Access, or Microsoft SQL server?
Applets in Web Pages
Using 'mailto' in applet parameters
How you can modify the behavior of an applet really depends on how the applet author has setup her code to accept parameters from the HTML.
Viewing the Source
How can I hide the java code from the View/source?
Placing the Applet in the HTML
Consider a very basic HTML page that displays a centered image...
How to add Java Applets to Your Web Page
Adding Java Applets to your page is actually fairly simple, but there are several steps involved and if you make a mistake at any one step because of a misunderstanding (or even a typo) the whole shebang could fail.
Programming in Java
What is the "super" class and how is it used?
The super keyword is used by an object to reference the methods and
fields of a class that it has extended.
Procedural vs Object-Oriented Programming
A run-down of the benefits of OOP over old-fashioned PP
Package javax.servlet not found in import
This error message is actually pretty complete and useful as far as error messages go. In fact, I think it gives you everything you need to know to solve your problem...if you don't let it scare you that is!
How to Get into the Web Development Business
Do something you love and involve the web in it.
A Basic Form Applet
This is in no way a well-written Java solution, but it should give you the basic idea....
Books and Compilers
Getting started.
Selena Sol contributes to the JavaBoutique's Introduction to Java. Selena curently works for Barclays Capital in London, one of the leading global investment banks in Europe and has worked as a software developer for the National Center for Human Genome research, Microline Software, Neuron Data, and Electric Eye in Singapore. Selena is perhaps best-known for creating the Public Domain Web Script Archive (Extropia) and writing several books on Web Programming (Perl, CGI, Java).
Email: selena@extropia.com
New on the Java Boutique:
New Review:
Time Management Made Easy with the Quartz Enterprise Job Scheduler
Why not just use the Java timer API? This open source scheduling
API boasts simplicity, ease-of-integration, a well-rounded feature
set, and it's free!
New Applet:
Reverse Complement
Reverse Complement is a simple applet that converts DNA or RNA
sequences into three useful formats.
Elsewhere on internet.com:
WebDeveloper Java
Lots of Java information on webdeveloper.com
WDVL Java
Thorough Java resource at the Web Developer's Virtual Library.
ScriptSearch Java
Hundreds of free Java code files to download.
jGuru: Your View of the Java Universe
Customizable portal with online training, FAQs, regular news updates, and tutorials.
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