Know Java before Opting for Enterprise Java Services

Along with the conventional application, Java is nowadays also being used for creating enterprise, mobile and Cloud apps. So developers have to rely on Java Enterprise Services to deliver rich user experience. In a multi-tiered environment, the components of Java 2 Platform, Enterprise Edition (J2EE) can be installed on several client systems. However, the features of these J2EE components are completely different from standard Java program features. Further, a developer needs to use the Java Enterprise APIs to support a variety of network services and distributed computing technologies. So each developer must be familiar with the use of different Java APIs to use those as a building block to create robust enterprise applications.

Widely Used Java Enterprise APIs that Each Developer Needs to Know

Java Database Connectivity (JDBC): The Java Enterprise API is used by developers to work with relational database systems. But the API is independent of other vendor-specific APIs defined by specific database systems. Along with sending SQL query and update statement to the server, JDBC further allows the application to retrieve and iterate the results send by the server. Further, it provides Meta information related to the database and its tables. A custom driver needs to be implemented to make the application communicate with individual database server products.

Remote Method Invocation (RMI): As a programming model, RMI provides a high-level approach to distributed client-server computing. An enterprise application can use RMI to communicate with the server by invoking methods on objects that reside on the server. But the methods can be invoked by using the syntax for invoking local methods. Despite being comprehensive, the Java RMI implementation is both simple and easy-to-use. But it requires both client and server to be implemented using Java.

Common Object Request Broker Architecture (CORBA) Distributed Objects: The CORBA-based solution is used to invoke remote methods when the client and server are not implemented in Java. CORBA is also used as a standard by the packages and sub-packages of Java 2 platform in the org.omg.CORBA. The interface for CORBA objects are further described by the Interface Description Language (IDL) that is independent of both language and platform. A developer can also use Java implementations of the CORBA standard launched by Sun and other vendors.

Java Naming and Directory Interface (JNDI): The Java Enterprise API makes it easier for developer to work with networked directory and naming services. They can use the API to access name servers and directory servers, and look for data or objects base on their names or a set of specific attribute values. However, JNDI is not specific to any specific name or directory server protocol. As a generic API, JNDI can be used with a wide variety of name or directory servers.

Java Message Service (JMS): Most developers use the Java Enterprise API to work with networked messaging services. The API further allows them to write message-oriented middleware (MOM). However, message, in context of JMS, refers to a chunk of data that is transferred from one system to another. So the programmers can use messages as event notifications readable across systems. However, the JMS is a vendor-specific messaging service. So the developers have to install a JMS provider according to their message servers.

Java Transaction API (JTA): Normally, the distributed transactions make distributed enterprise systems more complex and complicated. The Java Transaction API is designed to help programmers in managing distributed transactions efficiently. As it works seamlessly with transaction services, it becomes easier for programmers to define individual Java bindings for each standard XA API for distributed transactions. Thus, the enterprise application can use the specific service to coordinate between different distributed transactions.

The individual as well as enterprise developers rely on API-based access to Enterprise Java data and services. These APIs further make it easier for the developers to build mobile and Cloud applications. So it becomes essential for programmers to understand how to manage these API processes efficiently. You can get in touch with a Java web application development companies who can help you develop web apps that are stable, scalable and secure.

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Features in Java 8 That Will Change the Way You Code

As a widely used computer programming language, Java needs no introduction. The class-based and object-oriented programming language further enables developers to run the same code on multiple platforms without recompilation. Recently, Oracle released Java 8 with a set of new features, enhancements and bug fixes to complement the most recent trends in software development. Some of these features at the JVM and programming language level will even change the way you code.

Five Java 8 Features That Will Change the Way You Code

1) Lambada Expressions

Implementation of Lambada expressions is one of the most significant features of java 8. The dominant feature will make you change your coding habits. You can use the feature to use Java like other prominent functional programming languages. Also, the features make Java usable with functional JVM-based languages like Clojure and Scala. The Lambadas have further been integrated tightly into the core language libraries related to array and collection libraries. So the coding will be incorporated into the Java code written by both in-house and third-party developers.

2) Parallel Operations

Along with Lambada expressions, Java 8 also comes with a key concept to facilitate parallel operations. Often programmers are required to use loop operations to facilitate internal iteration. But Lambada expressions make it easier for them to carry on actual iteration over a collection. They can simply invoke a Lambada function to carry out the iteration through a core library. The function will act as an extension of iterators to extract the next item from a collection. You can avail the feature to sort, filter and map the items while the processing is carried on simultaneously by the framework.

3) New Date and Time API

Java 8 also comes with a completely revamped data and time API. The API allows developers to handle date and time in a natural, easier-to-understand and more natural way. Thus, now it becomes easier for you to avoid the complex native Java library API that was using conventionally to handle date and time. The most recent of Java further implements the data and tome API from scratch to facilitate clean operation to manipulate the values in a format that is readable by both humans and machines.

4) Nashhorn JavaScript Engine

Oracle has further integrated the Nashhorn JavaScript Engine into JDK. The Java applications can access the high performance yet lightweight engine through the existing APIs. You can avail the features to eliminate the gap between Java and JavaScript. While integrating JavaScript into your backend, you are no longer required to set up a node.js. The code can be executed simply by using the JVM. Thus, you are not required to use several IPC and RPC methods to bridge the gap between Java and JavaScript.

5) Concurrent Accumulators

Many developers find it a daunting to decide the right way to update numeric counters that are accessed simultaneously by multiple threads. A developer also has option to update the numeric counter through read/write locks, synchronized blocks or AtomicInteger. Each option requires the programmers to implement the semantics 100% accurately. But Java 8 makes it easier for you to update the numeric counters without any hassle by using the new concurrent accumulator classes. The concurrent accumulators can increase or decrease the value of the numeric counter in an efficient and thread safe manner. Further, you can use the class without worrying about the accuracy of semantics.

The most anticipated version of Java also comes with several security enhancements. You can use an advanced mechanism to replace the existing hand-maintained list of caller sensitive methods. In addition to identifying the methods accurately, the mechanism further makes their callers discoverable in a reliable and efficient way. You can get in touch with a Java web services development company who can help you develop applications that are stable, scalable and secure.

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