Generics in Java 5.0

The feature of Generics in Java allows Applications to create classes and objects that can operate on any defined types. Programmers can now make use of the Generics feature for a much better code. There is no need for un-necessary casting when dealing with Objects in a Collection. This article provides a detailed overview of Generics and its usage in different context with samples. To start with, it illustrates the need for Generics and the difficulties faced by the Developers before its origin. It will explain in detail on how to write Generic Classes, Generic Methods and so on. Then the various aspects of Bound Constraints and Wild-cards will be discussed.

Generics in Java 5.0 [Discuss Here]

New Features in Java 5.0

Java 5.0 comes with a bunch of useful features. In this article, we are going to have an overview of the features like Enhanced for-loop, Variable Arguments, Static Imports and Enumerations. The sections in this article are,

New Features in Java 5.0 [Discuss Here]

AutoBoxing in Java 5.0

In the latest version of J2SE 5.0 released by Sun, Autoboxing is one of the new feature. Before J2SE 5.0, working with primitive types required the repetitive work of converting the primitive types into wrapper classes and vice - versa. Sometimes the purpose of conversion is just for some API call, after which the results have to be converted into original form which is very frustrating .Auto-boxing and Auto-Unboxing enables the primitive types to be converted into respective wrapper objects and the other way around.This article gives some insight about the importance of this new feature and how it can be used in the real-world programming.

AutoBoxing in Java 5.0 [Discuss Here]

Introduction to Java 5.0 Annotations

Annotations in Java is all about adding meta-data facility to the Java Elements. Like Classes, Interfaces or Enums, Annotations define a type in Java and they can be applied to several Java Elements. Tools which will read and interpret the Annotations will implement a lot of functionalities from the meta-information obtained. For example, they can ensure the consistency between classes, can check the validity of the paramters passed by the clients at run-time and can generate lot of base code for a project. This article provides you a complete guide detailing the various aspects of Annotations. The topics covered in this article are as follows,

Introduction to Java 5.0 Annotations [Discuss Here]

Introduction to JavaFX

The JavaFX Scripting Programming Language (JavaFX) is a new family of Sun products based on Java technology and targeted at the high impact, rich content market.

JavaFX is a highly productive scripting language that enables content developers to create rich media and content for deployment on Java environments. JavaFX is a declarative, statically typed programming language. It has first-class functions, declarative syntax, list-comprehensions, and incremental dependency-based evaluation. It can make direct calls to Java APIs that are on the platform. Since JavaFX is statically typed, it has the same code structuring, reuse, and encapsulation features such as packages, classes, inheritance, and separate compilation and deployment units, that make it possible to create and maintain very large programs using Java technology. Using the JavaFX language it is possible to create GUI using swing GUI components. This document gives a description of the JavaFX programming language.read full article

Mapping Java Objects and XML Documents using JAXB - Java 6.0

JAXB (Java API for XML Binding) technology which was included as part of JWSDP (Java Web Services Developer Pack) before, is now included with the Mustang Distribution. Simply put, it is a Mapping Technology for Java and XML Documents. Using JAXB, one can Generate XML Documents from Java Objects and also they can Construct Java Objects from one or more XML Documents. In JAXB terms, Marshalling refers to the process of converting a Java Object to a XML Document and Un-Marshalling is the reverse of Marshalling which is simply getting a Java Object from one or more XML Documents. read full article

Streaming API for XML - Java 6.0

Streaming API for XML, simply called StaX, is an API for reading and writing XML Documents. Why need another XML Parsing API when we already have SAX (Simple API for XML Parsing) and DOM (Document Object Model)? Both SAX and DOM parsers have their own advantages and disadvantages and StaX provides a solution for the disadvantages that are found in both SAX and DOM. It is not that StaX replaces SAX and DOM. read full article

Pluggable Annotation Processing API - Java 6.0

Annotations have been there in the Java World from Java 5.0. Java Annotations are a result of the JSR 175 which aimed in providing a Meta-Data Facility to the Java Programming Language. It can be greatly used by the Build-time Tools and Run-time Environments to do a bunch of useful tasks like Code Generation, Validation and other valuable stuffs. Java 6 has introduced a new JSR called JSR 269, which is the Pluggable Annotation Processing API. With this API, now it is possible for the Application Developers to write a Customized Annotation Processor which can be plugged-in to the code to operate on the set of Annotations that appear in a Source File.read full article

Ajax support in struts 2.0

Ajax or Asynchronous JavaScript and XML was introduced by Jesse James Garrett in 2005. He is called the “Father of Ajax” .Ajax is a collection of concepts and technologies that allows richer and more interactive user interaction with the web applications. The Ajax engine allows the user’s interaction with the application to happen asynchronously — independent of communication with the server. So the user is never staring at a blank browser window and an hourglass icon, waiting around for the server to do something.read full article

Introduction to Java 6.0 New Features, Part–I

This article covers the various new features of Java 6, also known as Mustang. This article assumes that readers have sufficient knowledge over the concepts and terminologies in Java 5.0. For more information on Java 5.0, readers can vist the resources available in javabeat here. Though there is no significant changes at the Language Level, though Mustang comes with a bunch of enhancements in the other areas like Core, XML and Desktop. Most of the features are applicable both to J2SE and J2EE Platforms.read full article

Hibernate Interceptors - An Introduction

This article deals with Hibernate Interceptors. Hibernate is an open-source project that provides ORM solution. Situations may demand to perform some set of pre-requisite/post-requisite operations before/after the core functional logic. In such a case, an interceptor can be used to intercept the existing business functionality to provide extensible or add-on features.read the full article>>

Integrating Struts With Spring

Struts is more established and more stable MVC2 framework at this time so if your application is based on Struts framework you may forget about thinking to move to some other framework. But at the same time you must have heard about the buzz created by Inversion of Control (IOC) design pattern. This design pattern is implemented by Spring framework. Besides there are some more amazing features of Spring like AOP. So if you like to take advantage of these features of Spring you do not have to rebuild the application, but you can integrate your existing Struts application with Spring without much hassle. More about that latter but first we would like to have a look at new features of Spring and how they work.read the full article>>

Introduction to Java Persistence API(JPA)

Java Persistence API (JPA) provides POJO (Plain Old Java Object) standard and object relational mapping (OR mapping) for data persistence among applications. Persistence, which deals with storing and retrieving of application data, can now be programmed with Java Persistence API starting from EJB 3.0 as a result of JSR 220. This API has borrowed many of the concepts and standards from leading persistence frameworks like Toplink (from Oracle) and Hibernate (from JBoss). One of the great benefits of JPA is that it is an independent API and can nicely integrate with J2EE as well as J2SE applications.More>>

What is new in Java 6.0 Collections API?

In this article Vidua Sagar will write about the new Collections APIs introduced in Java 6.0. Mustang has few interesting changes in the Collections APIs, one amoung them is the Deque. Deque is used for the Bi-Directional traversal. It has different implementations including BlockingDeque,ArrayDeque,etc. He will talk about the Deque and its various implementation, also few more changes in the Collectiona API in Java 6.0.More>>

The Java 6.0 Compiler API

One of the cool features available in Java 6.0 (Mustang) is the ‘Java Compiler API’. This API is a result of the JSR (Java Specification Request) 199 which proposes that there must be a standard way to compile java source files. The result of the JSR is the new ‘Java Compiler API’ and one can use this new feature to compile java source files from within java files. Previously developers were depending on the low-level issues like starting a process representing the javac.exe. Though this feature is not intended to every one, Editors or IDE (Integrated Development Environment) can make much use of this new feature for compiling Java source files in a better manner.More>>

EJB 3.0 Timer Services - Timer Services API

Starting from EJB 2.1, Timer Services are available for building J2EE Applications that depends on time based services. Time based services are mostly used in scheduling applications. Technically, these scheduling applications are called workflows. A workflow defines a configurable sequence of activities or tasks that will take place at a particular point of time. Before EJB 2.1, one has to manually code for building and deploying time-based workflow systems. But, with the invent of EJB 3.0, thanks to Annotations and Dependency injections, life has become still more easier for creating such applications.More>>

Sun CEO: Java open source in 30-60 days

Sun Microsystem will announce the open-sourcing of the core Java platform in 30 to 60 days, said Sun President/CEO Jonathan Schwartz at the Oracle OpenWorld conference on Wednesday morning.

Java will be offered via an open source format under an OSI-approved (Open Source Initiative) license similar to the one used for open-sourcing of the Solaris OS, he said during a keynote presentation.

Sun officials have talked about Java being offered via open source in stages later this year and into 2007.

Mustang reaches build 100

Java 6.0 the code named Mustang is releasing its 100th build for its beta version this week. List of builds and fixes history.

Java and Vista not playing well together

Among the wrinkles still to be ironed out of Microsoft's Windows Vista before the long-awaited client operating system goes gold is the tendency of Vista's shiny new "glass" UI to balk at Java-based applications.more>>