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Prestwood IT Newsletter Jan 2014 Issue - Java Edition

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Each month on or after the 1st, and only once a month, we will send you content from up to 5 community groups. If you select this Java group, you'll receive the following content below mixed in with the other groups you elect to include.

Prestwood eMag
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  January 2014 - Java Edition Year 16 Issue 1  


Expert guidance from working professionals!
IT Water-Cooler for Power-Users topic:
Stamp Out Spam
by Vicki Nelson

How to fight back against spam and reclaim your inbox. As you may know, the volume of spam messages sent across the Internet has reached epidemic levels. Some industry experts estimate that three out of every five e-mail messages that are sent today are spam. The spam epidemic is costing companies, professionals, and individual users considerable amounts of time, money, and resources.

What is spam, and what can I do about it? Spam is generally defined as an unsolicited mailing, usually sent to many recipients. Most spam is commercial advertising, often for dubious products, get-rich-quick schemes, or quasi-legal services. Spam costs the sender very little to send. Most of the costs are paid by the recipient or the carriers rather than the sender. Some effective methods for preventing your e-mail address from being captured, sold or abused by spammers in the full version of this article. Click the title to read more.


Off Shoring topic:
Off-shoring: You CAN fight back!
by Wes Peterson

Are you fed up with calling a company and finding yourself speaking to somebody in a foreign country? 

I am, and I've just learned of an effective way to fight back, help return jobs to America, and keep them here.

The best part? We don't have to wait for government to do a thing.






 Java Group Top 
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Language Details topic (classic post):
Java Inheritance (extends ParentClass)
by Mike Prestwood

Simple syntax example of class inheritance.


OOP topic (classic post):
Implementing the Composite and Visitor Patterns in Java
by Evan Egalite

Implementing design patterns can be difficult and little sample code exists that walks you through the process. The purpose of this article is to walk through the implementation of a program that uses the Composite and Visitor design patterns. The sample project is written in the object-oriented language, Java, but it could just as easily have been written in C++.


 Monthly Java Lesson
Tool Basics Topic:
Code Snippet of the Month

Java String Concatenation

In Java, you use either the String concatenation + operator or StringBulder class methods such as append. Since Java compilers frequently create intermediate objects when the + operator is used and don't when StringBuilder.append is used, the append method is faster than the + operator.

In general, use the convenience of a + operator when speed is not an issue. For example, when concatenating a small number of items and when code isn't executed very frequently. A decent rule of thumb is to use the + operator for general purpose programming and then optimize the + operator with StringBuilder.append as needed.

Simple + operator example:

System.out.println("Hello" + " " + "Mike.");

 

Using StringBuilder example:

StringBuilder myMsg = new StringBuilder();


myMsg.append("Hello ");
myMsg.append("Mike.");
 

System.out.println(myMsg);
Standard Java Topic:
If you need support for general Java and Web development, consider Eclipse IDE for Java EE Developers.

The Eclipse IDE for Java Developers contains what you need to build Java applications. Considered by many to be the best Java development tool available, the Eclipse IDE for Java Developers provides superior Java editing with validation, incremental compilation, cross-referencing, code assist; an XML Editor; Mylyn; and much more.

Eclipse for Java Topic:
Resource Link of the Month: Eclipse And Java: Free Video Tutorials

Free video tutorials by Mark Dexter.

Standard Java Topic:
FAQ of the Month: Is JAVA installed?
Question: How do I tell if Java is installed?

Answer:

You can test whether you have Java installed at http://www.java.com/en/download/help/testvm.xml.





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