JavaFX: Tutorials and Demos

JavaFX is a family of products for creating Rich Internet Applications (RIAs) with immersive media and content. The JavaFX products include a runtime and tools suite that web scripters, designers and developers can use to quickly build and deliver expressive rich interactive applications for desktop, mobile, TV and other platforms. Currently JavaFX consists of JavaFX Script and JavaFX Mobile.

Swing Application Framework (JSR-296): new concepts, new features

Swing is a widget toolkit for Java. It is part of Sun Microsystems’ Java Foundation Classes (JFC) — an API for providing a graphical user interface (GUI) for Java programs.

Swing was developed to provide a more sophisticated set of GUI components than the earlier Abstract Window Toolkit. Swing provides a native look and feel that emulates the look and feel of several platforms, and also supports a pluggable look and feel that allows applications to have a look and feel unrelated to the underlying platform.

Google Web Toolkit (GWT) – Create Ajax applications in Java: Examples and Concepts

Google Web Toolkit (GWT) is an open source Java software development framework that allows web developers to create Ajax applications in Java. It is licensed under the Apache License version 2.0.

GWT emphasizes reusable, efficient solutions to recurring Ajax challenges, namely asynchronous remote procedure calls, history management, bookmarking, and cross-browser portability.

Google Web Toolkit (GWT) is an open source Java development framework that lets you escape the matrix of technologies that make writing AJAX applications so difficult and error prone. With GWT, you can develop and debug AJAX applications in the Java language using the Java development tools of your choice. When you deploy your application to production, the GWT compiler translates your Java application to browser-compliant JavaScript and HTML.

JRuby – Java and Ruby: Concepts, Methods and Examples

JRuby is a Java implementation of the Ruby interpreter, being developed by the JRuby team.

JRuby is free software released under a three-way CPL/GPL/LGPL license.

JRuby is tightly integrated with Java to allow the embedding of the interpreter into any Java application with full two-way access between the Java and the Ruby code. (Compare Jython for the Python language.)

JRuby’s lead developers are Charles Nutter , Thomas Enebo Ola Bini and Nick Sieger. In September 2006, Sun Microsystems hired Enebo and Nutter to work on JRuby full time. In June 2007, ThoughtWorks hired Ola Bini to work on Ruby and JRuby.

JSON (JavaScript Object Notation): Concepts, Methods, Examples and Security Threats

JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition – December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.

JSON is built on two structures:

• A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array.
• An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence.

These are universal data structures. Virtually all modern programming languages support them in one form or another. It makes sense that a data format that is interchangable with programming languages also be based on these structures.

Single sign-on (SSO): Concepts, Methods and Frameworks

Single sign-on (SSO) is a method of access control that enables a user to log in once and gain access to the resources of multiple software systems without being prompted to log in again. Single sign-off is the reverse process whereby a single action of signing out terminates access to multiple software systems.

As different applications and resources support different authentication mechanisms, single sign-on has to internally translate to and store different credentials compared to what is used for initial authentication.

As IT systems proliferate to support business processes, users and system administrators are faced with an increasingly complicated interface to accomplish their job functions. Users typically have to sign-on to multiple systems, necessitating an equivalent number of sign-on dialogues, each of which may involve different usernames and authentication information. System administrators are faced with managing user accounts within each of the multiple systems to be accessed in a co-ordinated manner in order to maintain the integrity of security policy enforcement.

Amazon Web Services: Overview and Example with Java and PHP

Until 1 hour ago I had same problems with Wordpress, image and other functionality didn’t work. After done all the means in my power and ability, I decided to contact wordpress. Wordpress problem derived from Amazon Web Services dependencies! What’s that?

The Amazon Web Services (AWS) are a collection of remote computing services (also called web services) offered over the Internet by Amazon.com.

Launched in July 2002, Amazon Web Services provide online services for other web sites or client-side applications. Most of these services are not exposed directly to end users, but instead offer functionality that other developers can use. In June 2007, Amazon claimed that more than 330,000 developers had signed up to use Amazon Web Services.

Groovy and Grails: Concepts, Examples and Methods

Groovy is a language that has a syntax that’s similar to, yet simpler than, Java. It’s often referred to as a scripting/agile/dynamic language, but I would prefer to stay away from these adjectives as I feel they only end up confusing things. If Java is a wise middle-aged man, Groovy is his teenage son. Groovy has many of the old man’s characteristics but is a lot wilder and a lot more fun. Both of them also work together very well.

Groovy has a lot fewer rules than Java. For example, in Java to get the standard “Hello World” output, you need to write a class, a main method with proper arguments, and more. But in Groovy, if you don’t wish to write all the boilerplate code, you can get rid of the class definition and the main method and just write the one line of code that actually prints “Hello World.”

Applets are back: new concepts, new design, new features

A Java applet is an applet delivered in the form of Java bytecode. Java applets can run in a Web browser using a Java Virtual Machine (JVM), or in Sun’s AppletViewer, a stand-alone tool for testing applets. Java applets were introduced in the first version of the Java language in 1995. Java applets are usually written in the Java programming language but they can also be written in other languages that compile to Java bytecode such as Jython.

Applets are used to provide interactive features to web applications that cannot be provided by HTML. Since Java’s bytecode is platform independent, Java applets can be executed by browsers for many platforms, including Windows, Unix, Mac OS and Linux.There are open source tools like applet2app which can be used to convert an applet to a stand alone Java application/windows executable/linux executable. This has the advantage of running a Java applet in offline mode without the need for internet browser software.

Java Annotations: Concepts, Methods and Examples

An annotation, in the Java computer programming language, is a special form of syntactic metadata that can be added to Java source code. Classes, methods, variables, parameters and packages may be annotated. Unlike Javadoc tags, Java annotations are reflective in that they are embedded in class files generated by the compiler and may be retained by the Java VM to be made retrievable at run-time.

Annotations are a metaprogramming facility introduced J2SE 5.0. They allow us to mark code with defined tags. Some developers think that the Java compiler understands the tag and work accordingly. This is not right. The tags actually have no meaning to the Java compiler or runtime itself. There are tools that can interpret these tags. For instance: IDEs, testing tools, profiling tools, and code-generation tools understands these tags.