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The following is a how to on getting putty set up putty on a Win XP box to enable you use an RSA (or DSA) private/public key pair to connect to a linux server over SSH.

• Generate your keys on the linux server to which you want to connect.

• SSH to your server
• go to your home directory .ssh/
• Enter the following command to generate the key pair:

• # ssh-keygen -t rsa
• Enter a passphrase for your keys

This will → Continue reading “Setting Up SSH Keys to Connect from Windows to a Linux Server with Putty”

When you want to search for the dot (.) character in a regular expression and not use it as a metacharacter use the following syntax:

String regexPattern = “[.]”;→ Continue reading “Searcing for a dot "." character with a Java Regular Expression”

With Java 5.0 enums became much more powerful, click here for an overview.

I am working on a project that is using an enum to keep track of an attribute of one of my objects and wanted to initialize a HashMap inline in the call to the enum’s constructor. Such was my delight to find out that using a simple initializer block that it was a snap.

Here is the relevant snippet of code that illustrates the syntax:

public → Continue reading “Java In-line Initialization of a Map in the Constructor of an Enum Constant”

http://www.w3schools.com/wsdl/wsdl_intro.asp→ Continue reading “An Introduction to WSDL”

http://www.w3schools.com/SOAP/soap_intro.asp→ Continue reading “An Introductoin to SOAP”

Secure Programming for Linux and Unix HOWTO: Language-Specific Issues, 10.6. Java → Continue reading “A Few Key Guidelines for Secure Java Programming”

This is quite incredible. A purely Javascript Flash Player. Here are some examples.

I think that projects like this are simply proof that the days of Flash and it’s plugin based virtual machine in a browser are numbered. Along with jQuery and a host of other Javascript frameworks that are being built, once HTML 5 browsers are in the majority there will be many more options for multimedia content/interactivity on a page than Flash. → Continue reading “Open-Source JavaScript Flash Player (HTML5/SVG)”

While learning Java I came accross the “final” keyword and wasn’t quite sure what it meant.

Here is a good article that explains it and it’s appropriate usage. → Continue reading “A Great Article About the "final" Keyword in Java”

On the SWT FAQ there is a how-to for compiling a 64 bit version of SWT for Eclipse, however, it is currently incorrect and took a bit of research and experimentation to sort out.

Here is how to do it (I have copied the original how-to and made edits where appropriate.

In this case, I am using Eclipse 3.5.1 under Kubuntu 9.04.

In this how-to you will extract the SWT source from the CVS repository and build your own binaries.→ Continue reading “Compiling a 64 bit version of SWT for Eclipse”

Introduction to Programming Using Java, Fifth Edition Version 5.0, December 2006

David J. Eck also provides the source code to a TextIO class that he has written that provides some additional IO features.  Click here for an outline of those methods and on that page is also a link to the source. → Continue reading “An Excellent Primer on Both Programming and Java”