J2EE is short for Java 2 Platform Enterprise Edition. This Java-centric environment is used to develop, build, and deploy enterprise web applications. The platform includes a set of services, protocols, and APIs used to create multi-tiered web apps. With the launch of the J2EE platform, Sun Microsystems has taken the first step in putting together an array of Java component technologies to deliver an ideal integrated solution to creating web-based applications.
J2EE is based on the Java2 Standard Edition(also known as the J2SE), implementing its essential functionality. The platform also comprises a compatibility test suite(CTS) to ensure the portability of J2EE-compliant applications across vendor implementations.
This platform-independent environment is built on a standard three-tier architecture, viz., the client tier, the middle tier, and the EIS tier. J2EE takes multiple pre-existing standards and expounds the interplay between these components in an enterprise resource planning system. The platform provides extended and standardized support for distributed transactions, resource pooling, security, and flexible deployment of applications.
The rising demand for J2EE developers
Java is one of the most commonly used programming languages, and J2EE developers are equipped with coding skills to harness this language's power. These IT professionals are full-time employees in an office environment. Their passion for technology, willingness to learn, and desire to learn new skills help them excel in their career.
The J2EE platform lends itself well to accommodating new tech needs, and Java has consistently been rated as the most commonly used language across the globe for more than a decade - every six months or so, there's a new update. It is crucial to hire the most competent J2EE developers for challenging enterprise application development projects.
Many J2EE developers are available to be employed; however, not all possess sufficient skills to fulfill a company's needs. The reason is that J2EE is a continually evolving field, and professionals should increase their competencies with related technologies. It is for this reason that J2EE online tests have become an integral part of the recruiting process.
About J2EE Online Test
Java Standard Edition (Java SE) is used to develop and deploy portable code for desktop and server environments. A good J2EE Developer should be able to write and implement reusable and testable code on the J2EE platform as well as have in-depth knowledge of concepts of Java.
The online J2EE exam helps the hiring managers and recruiters measure the test-taker's understanding of the J2EE platform. Besides, SMEs contribute significantly to creating and validating these assessments as per the industry standards. Mettl's J2EE online test evaluates a candidate's technical skills and abilities to develop web applications on the J2EE platform.
The J2EE test will help you in:
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Why should you use Mercer | Mettl's J2EE online exam?
Mettl's J2EE online test helps screen those candidates who possess the traits given below:
The J2EE online test will assess a candidate's employability skills accurately and objectively. The test will evaluate an individual's knowledge of J2EE and identify whether he/she is qualified for the job. Mettl's powerful reporting focuses on the candidate's performance and provides a broad view of strengths and weaknesses. Also, recruiters can enable essential features such as webcam proctoring and secure exam browsing to detect probable cheating incidents.
The 60-minute test aims at thoroughly evaluating the knowledge, concepts, application, and analysis skills of the target audience in Java and J2EE. The test has 26 items divided into three sections, as follows:
Key profiles the online J2EE exam is useful for:
The J2EE test aims to evaluate conceptual and programming skills in Java SE8 and JEE and identify the talented Software Developers, Software Engineers, System Programmers, IT Analysts, and Senior Programmers. Hiring managers can conduct the J2EE exam to identify and screen out unsuitable candidates very early in the hiring process.
Questions in the J2EE test span across the below topics given below:
What is the J2EE exam?
A J2EE exam evaluates a candidate's technical skills to perform web application development on the J2EE platform and ascertains candidates' job readiness.
What is the difference between Java and J2EE?
Core Java programming language is used in the general Java application development, whereas the J2EE computing platform comes with Core Java and a robust library set. Core Java is also called Java SE and includes JDK, JRE, SDK, JavaFX Runtime, and JRockit JDK. J2EE is a platform-independent environment for conceptualizing, developing, and deploying enterprise web applications.
What is Java J2EE used for?
The J2EE platform is used to develop multi-tier web applications via a series of APIs and protocols.
What are J2EE concepts?
Java Standard Edition (Java SE) is used to develop and deploy portable code for desktop and server environments. J2EE is an environment for developing and deploying enterprise applications. The J2EE platform consists of a set of services, APIs, and protocols that provide the functionality for developing multi-tiered, web-based applications.
What are the main features of J2EE?
Given below are some of the key features of J2EE:
What are the types of J2EE clients?
A wide variety of client applications can utilize J2EE services based on the scope of design within the enterprise. Listed below are various types of J2EE clients:
What is a J2EE application server?
J2EE application servers are application server products that conform with technologies and standards advocated by J2EE specifications. They provide a standardized runtime environment and development for application components.
Is J2EE still used?
Yes, it will continue to be relevant because there are plenty of developers who are using it.
What are the different types of J2EE modules?
These are four types of J2EE modules:
What are the core components of the J2EE application?
The J2EE application components are as follows:
Why is J2EE needed?
J2EE is used for developing e-commerce and enterprise web applications. J2EE provides an assortment of technologies for making distributed enterprise applications.
These technologies are service technologies, component technologies, and communication technologies.
What is J2EE architecture?
The J2EE platform is based on a multi-tiered, distributed application model - the client tier, middle tier, and enterprise data tier. The client tier serves as an interactive medium for the client, whereas the middle tier defines functioning units and comprises EJB components and web components. The enterprise data tier is utilized for storage purposes as a relational database and consists of components, containers, and services.
What is a J2EE container?
A J2EE container is a server platform configured to run J2EE applications. The J2EE container is configured with an EJB container and a web container.
What is an online J2EE mock test?
J2EE online mock tests are useful exam preparation tools for aspirants. Some great websites provide free mock tests that include a choicest handpicked selection of J2EE test questions and answers.
The online J2EE mock test can help candidates prepare for job interviews, entrance examinations, and campus interviews. Such online test series consist of a plethora of J2EE MCQ quiz that covers the J2EE platform basics.
What are the most commonly asked J2EE interview questions?
Listed below are some of the most common J2EE interview questions asked during an interview:
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