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Piyush A., J2EE Developer

Last Job: 23 Aug 2024

- 14 years of AEM experience in design, development, integration, and delivery of small to large-scale enterprise-level applications. - An experienced solution architect with a keen interest in business domains, hands-on in technology-based solutions, and a strong focus on delivering measurable value. - Industry Experience: Vast industry experience covering aviation, telecommunications, media, finance, retail, mutual funds, and services sectors. - Technical skills: Best-in-class analytical and problem-solving skills with a track record of on-time and within-budget delivery. - Soft skills: Ability to build strong personal and professional relationships using excellent interpersonal skills. - E-commerce and AEM Expertise - Certificated Adobe Experience Architect, Components Developer, ManagerAreas of expertise include:- Digital transformations including Content Management Systems (CMS) like Adobe Experience Manager (AEM/CQ5). - Application/Software development right from inception to implementation - Implementation strategies, planning, and execution - Agile methodologies such as continuous integration and continuous delivery, features/domain-driven development, extreme programming - Worked with esteemed customers like ANZ Bank, Old Mutual Group (South Africa), Ford, Farmers Insurance, Aegon Insurance, LaQuinta, Cummins, and AT&T in consulting roles - Fluent English

J2EE

J2EE

AEM (Adobe Experience Manager)

AEM (Adobe Experience Manager)

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Krutvi Shah, J2EE Developer

Last Job: 29 Jul 2024

- Java Full Stack Developer with 8+ years of experience, specializing in Java, J2EE, Spring, Hibernate, RESTful webservices, Angular, and Oracle database. - Proficient in design and implementation of complex modules, with expertise in payment processing systems, workflow customizations, and performance optimization. - Successfully owned and delivered end-to-end modules, including handoff generation, auditing, and limit cutoff modules. - Significant experience with role-based authentication, CRUD operations, and integration with 3rd party systems using OAuth2 and PGP encryption. - Skilled in front-end development with AngularJS, creating responsive designs and utilizing tools like Jenkins and SonarQube for deployment and code quality. - Holds a Bachelor's degree in Engineering, demonstrating a strong technical foundation and commitment to continuous learning.

J2EE

J2EE

Java

Java

Salesforce Lightning Framework

Salesforce Lightning Framework

AWS Security Groups

AWS Security Groups

Hibernate

Hibernate

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Rishi K., J2EE Developer

Last Job: 4 Jul 2023

- A budding IT professional who has successfully completed Masters's in Computer Application from BITS, Mesra. Possess in-depth experience of 13 years in Software Development and project execution. - Knowledge and understanding of technologies like JAVA/ J2EE, JDBC, SERVLETS, JSP, AJAX, JAVASCRIPT, STRUTS, Microservices, HIBERNATE, SPRING, SPRINGBOOT, SPRING MVC, GOLANG, RESTFUL WEBSERVICES, JMS, PCF, AWS, Jenkins. - Acquired hands-on experience of CRUD development, Bug Fixing, Analysing the Issues, talking with onsite for the development of new modules through various academic projects. - Endowed with a passion for winning as evinced through demonstrated excellence in the academic & extracurricular areas. - Abilities to handle multiple priorities, with a bias for action and a genuine interest in personal and professional development. - Team player with strong analytical and leadership skills.

J2EE

J2EE

Java

Java

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Siarhei S., J2EE Developer

Last Job: 23 Aug 2023

- 8+ years of experience with Java - Computer science education - Key areas of technical expertise: technical solution design, integration solution design, J2EE, back-end development. - Upper-intermediate English - Available ASAP

J2EE

J2EE   8 yr.

Java

Java

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Devendar D., J2EE Developer

Last Job: 29 Apr 2024

- Having total work experience of 10+ years in Java/J2EE and Adobe CQ5. - Excellent experience in JCR, CRX, and OSGI technologies. - Expert in developing custom CQ components and modifying the out-of-the-box features. - Worked across the whole SDLC including analysis, design, coding, and unit testing. - Worked in Waterfall and Agile Methodology. - Upper-Intermediate English - Available since April 25th

J2EE

J2EE

AEM (Adobe Experience Manager)

AEM (Adobe Experience Manager)

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FAQs on J2EE Development

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A J2EE Developer is a specialist in the J2EE framework/language, focusing on developing applications or systems that require expertise in this particular technology.

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Hiring through Upstaff.com gives you access to a curated pool of pre-screened J2EE Developers, ensuring you find the right talent quickly and efficiently.

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All developers undergo a strict vetting process to ensure they meet our high standards of expertise and professionalism.

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Table of Contents

TOP 14 Tech facts and history of creation and versions about J2EE Development

Facts and history
  • J2EE (Java 2 Enterprise Edition) is a platform-independent, Java-centric environment for developing enterprise-level applications. It was created by Sun Microsystems in 1999.
  • The initial version, J2EE 1.2, introduced the concept of Enterprise JavaBeans (EJB) for building scalable, distributed, and transactional components.
  • In 2002, J2EE 1.4 brought significant improvements, including support for web services, JSP (JavaServer Pages) enhancements, and the integration of J2EE Connector Architecture.
  • With the release of J2EE 5.0 in 2006, the platform underwent a major overhaul. It introduced annotations for configuration and simplified development through the introduction of EJB 3.0, which offered a more lightweight programming model.
  • J2EE 6.0, released in 2009, focused on further simplifying development with features like web fragments, which allowed modularization of web applications, and the introduction of JavaServer Faces 2.0 for building user interfaces.
  • J2EE 7.0, released in 2013, aimed to enhance productivity and enable cloud-based deployments. It introduced features like batch processing, WebSocket API, and support for HTML5.
  • In 2017, J2EE was rebranded as Jakarta EE, with the transfer of the platform to the Eclipse Foundation. Jakarta EE 8, released in 2019, marked the first release under the new name and introduced updates to various specifications.
  • Jakarta EE 9, released in 2020, focused on modernizing the platform by updating the Jakarta Servlet, Jakarta Bean Validation, and Jakarta RESTful Web Services APIs, among others.
  • J2EE has influenced the development of other enterprise frameworks like Spring Framework, which borrows concepts from J2EE but offers a more lightweight alternative.
  • Various application servers, such as Oracle WebLogic, IBM WebSphere, and Apache TomEE, have provided support for J2EE and Jakarta EE, offering robust runtime environments for deploying enterprise applications.
  • J2EE has been widely adopted in industries such as banking, telecommunications, and e-commerce, due to its scalability, security, and support for distributed computing.
  • The J2EE platform has evolved to meet changing industry needs, embracing modern technologies and frameworks while maintaining backward compatibility.
  • Java EE 8, the predecessor to Jakarta EE, introduced support for microservices architecture through the introduction of Java EE Security API and updates to the Java Message Service (JMS) and Java Persistence API (JPA).
  • J2EE and Jakarta EE have a vibrant community of developers, who actively contribute to the evolution and improvement of the platform through open-source projects and collaborations.

How and where is J2EE used?

How and where
Case NameCase Description
Enterprise Resource Planning (ERP) SystemsJ2EE development is commonly used in building ERP systems, which are used by organizations to manage various business processes such as inventory management, human resources, finance, and customer relationship management. J2EE provides a robust and scalable framework for developing ERP systems that can handle large amounts of data, complex workflows, and integrate with multiple systems.
E-commerce PlatformsJ2EE is often employed in developing e-commerce platforms, which enable businesses to sell products and services online. J2EE’s features such as session management, security, and transaction management make it well-suited for building secure and reliable e-commerce applications. These platforms can handle high volumes of traffic, support multiple payment gateways, and provide personalized shopping experiences to customers.
Customer Relationship Management (CRM) SystemsJ2EE is utilized in the development of CRM systems, which help organizations manage their interactions with customers. CRM systems built using J2EE can store and analyze customer data, track sales activities, automate marketing campaigns, and provide a unified view of customer information across different channels. The scalability and flexibility of J2EE enable CRM systems to handle large customer databases and integrate with various third-party applications.
Supply Chain Management (SCM) SystemsJ2EE development plays a crucial role in building SCM systems, which allow businesses to manage the flow of goods and services from suppliers to customers. SCM systems built using J2EE can optimize inventory levels, track shipments, manage logistics, and provide real-time visibility into the supply chain. J2EE’s distributed architecture and messaging capabilities make it suitable for handling the complexity and scalability requirements of SCM systems.
Online Banking SystemsJ2EE is widely used in developing online banking systems, which enable customers to access their bank accounts, perform transactions, and manage their finances through a web-based interface. J2EE’s security features, such as authentication and authorization, ensure the confidentiality and integrity of sensitive financial data. Online banking systems built using J2EE can handle concurrent user sessions, provide real-time balance updates, and integrate with various banking services.
Healthcare Information SystemsJ2EE development is employed in building healthcare information systems, which facilitate the management and exchange of patient data among healthcare providers. J2EE’s interoperability and integration capabilities enable healthcare information systems to securely share patient records, enable telemedicine services, automate workflows, and ensure data privacy and compliance with healthcare regulations. These systems can handle large volumes of medical data and support complex data processing and analytics.

TOP 10 J2EE Related Technologies

Related Technologies
  • Java

    Java is the foundation of J2EE software development. It is a widely-used, object-oriented programming language known for its portability and versatility. With its robust set of libraries and frameworks, Java provides developers with the tools they need to build scalable and reliable enterprise applications.

  • Spring Framework

    Spring is a popular open-source framework for J2EE development. It provides a comprehensive programming and configuration model for building Java-based enterprise applications. Spring offers features like dependency injection, aspect-oriented programming, and transaction management, making it easier for developers to create maintainable and loosely coupled applications.

  • Hibernate

    Hibernate is an object-relational mapping (ORM) tool for Java. It simplifies database interactions by mapping Java objects to database tables and handles the underlying CRUD operations. Hibernate eliminates the need for writing complex SQL queries and provides a high-level abstraction for database operations, enhancing the productivity of J2EE developers.

  • JavaServer Pages (JSP)

    JSP is a technology that allows developers to dynamically generate HTML, XML, or other types of documents in response to user requests. With JSP, developers can embed Java code within HTML pages, enabling them to create dynamic and interactive web applications. JSP is a key component in J2EE web development.

  • Java Servlets

    Servlets are Java classes that extend the capabilities of servers and respond to HTTP requests. They provide a robust and efficient way to handle web application logic. Servlets are essential in J2EE development for building scalable and high-performance web applications.

  • Enterprise JavaBeans (EJB)

    EJB is a server-side component architecture for building distributed business applications in Java. It provides a set of reusable components that encapsulate business logic and can be deployed across multiple servers. EJB simplifies the development of distributed systems and enables developers to focus on business logic rather than infrastructure.

  • Apache Struts

    Struts is a popular MVC (Model-View-Controller) framework for building web applications in Java. It provides a structured approach to development, separating the presentation layer from business logic and data access. Struts simplifies the development process and promotes code reusability and maintainability.

Soft skills of a J2EE Developer

Soft skills

Soft skills are essential for J2EE Developers as they not only need technical expertise but also need to work effectively in a team and communicate with stakeholders. Here are the soft skills required for J2EE Developers at different levels:

Junior

  • Effective Communication: Ability to clearly convey information and ideas to team members and stakeholders.
  • Teamwork: Collaboration with other developers and stakeholders to achieve project goals.
  • Problem-Solving: Analytical thinking and problem-solving skills to identify and resolve issues.
  • Time Management: Efficiently manage tasks and meet project deadlines.
  • Adaptability: Ability to learn new technologies and adapt to changing project requirements.

Middle

  • Leadership: Ability to take ownership of tasks and guide junior developers.
  • Mentoring: Provide guidance and support to junior developers to enhance their skills.
  • Conflict Resolution: Resolve conflicts within the team and foster a positive work environment.
  • Client Management: Interact with clients and understand their requirements.
  • Quality Consciousness: Ensure code quality and adherence to best practices.
  • Project Management: Ability to handle multiple tasks and prioritize effectively.
  • Continuous Learning: Stay updated with the latest J2EE trends and technologies.

Senior

  • Strategic Thinking: Understand business objectives and align technical solutions accordingly.
  • Decision Making: Make informed decisions considering project constraints and requirements.
  • Presentation Skills: Effectively present technical concepts to stakeholders.
  • Collaboration: Foster collaboration between teams and departments for successful project delivery.
  • Performance Optimization: Optimize application performance through code and architecture improvements.
  • Risk Management: Identify and mitigate project risks proactively.
  • Client Relationship Management: Build and maintain strong relationships with clients.
  • Innovation: Identify opportunities for innovation and propose new ideas.

Expert/Team Lead

  • Strategic Planning: Develop long-term technical strategies and roadmap.
  • Team Management: Lead and inspire a team of developers to achieve project objectives.
  • Stakeholder Management: Build and maintain relationships with key stakeholders.
  • Business Acumen: Understand the business domain and align technical solutions with business goals.
  • Process Improvement: Identify and implement process improvements for increased efficiency.
  • Knowledge Sharing: Share expertise and promote a culture of knowledge sharing within the team.
  • Conflict Management: Handle conflicts and disagreements within the team or with stakeholders.
  • Budgeting and Resource Allocation: Manage project budgets and allocate resources effectively.
  • Strategic Vendor Management: Collaborate with vendors to ensure successful project delivery.
  • Negotiation Skills: Negotiate contracts, agreements, and project scope with clients and vendors.
  • Industry Thought Leadership: Stay updated with industry trends and contribute to the J2EE community.

What are top J2EE instruments and tools?

Instruments and tools
  • Apache Tomcat: Apache Tomcat is an open-source web server and servlet container that has been widely used for running Java-based web applications. It was first released in 1999 and has since become one of the most popular J2EE tools. Tomcat provides a robust and scalable environment for deploying Java web applications, supporting servlets, JavaServer Pages (JSP), and other Java-based technologies.
  • Oracle WebLogic Server: Oracle WebLogic Server is a leading J2EE application server used for building and deploying enterprise-level applications. It offers a comprehensive platform for developing and deploying Java applications, providing features like high scalability, reliability, and security. WebLogic Server has been continuously evolving since its initial release in 1998 and is widely adopted by large organizations for their mission-critical applications.
  • Eclipse IDE: Eclipse IDE (Integrated Development Environment) is a popular tool used by Java developers for building J2EE applications. It offers a rich set of features, including code editing, debugging, and project management capabilities. Eclipse has a large community of developers contributing to its ecosystem, which makes it highly extensible with various plugins and extensions.
  • JBoss Application Server: JBoss Application Server, now known as WildFly, is an open-source J2EE server developed by JBoss, a division of Red Hat. It provides a lightweight and flexible runtime environment for Java applications, supporting the latest J2EE specifications. JBoss has gained popularity due to its ease of use, extensive documentation, and active community support.
  • IBM WebSphere Application Server: IBM WebSphere Application Server is a robust and scalable J2EE application server used by many large enterprises. It offers a feature-rich environment for building, deploying, and managing Java applications. WebSphere Application Server has a long history, with its first release dating back to 1998, and it continues to be a preferred choice for enterprise-level Java applications.
  • NetBeans IDE: NetBeans IDE is another popular integrated development environment for Java development, including J2EE applications. It provides a user-friendly interface and powerful tools for code editing, debugging, and profiling. NetBeans has been widely adopted by developers due to its simplicity and extensive support for Java technologies.
  • Apache Maven: Apache Maven is a build automation tool widely used in J2EE development projects. It simplifies the process of managing dependencies, compiling code, and packaging applications. Maven follows a convention-over-configuration approach and supports declarative build configurations, making it easy to maintain and share project setups.

Hard skills of a J2EE Developer

Hard skills

As a J2EE Developer, having a strong set of hard skills is crucial for success in the field. Here are the hard skills required for different levels of expertise:

Junior

  • Java Programming: Proficiency in Java programming language and its core concepts.
  • Servlets and JSP: Knowledge of Servlets and JavaServer Pages (JSP) for developing dynamic web applications.
  • HTML/CSS: Understanding of HTML and CSS for frontend development.
  • Database Management: Familiarity with SQL and database management systems like MySQL or Oracle.
  • Version Control: Experience with version control systems like Git for collaborative software development.

Middle

  • Enterprise JavaBeans (EJB): Expertise in developing and implementing EJB components for enterprise-level applications.
  • Spring Framework: Proficiency in using the Spring Framework for building robust and scalable Java applications.
  • Web Services: Knowledge of developing SOAP and RESTful web services using technologies like JAX-WS and JAX-RS.
  • ORM Frameworks: Experience with Object-Relational Mapping (ORM) frameworks like Hibernate for database integration.
  • Application Servers: Familiarity with application servers like Apache Tomcat or JBoss for deploying J2EE applications.
  • Testing Frameworks: Understanding of unit testing frameworks like JUnit for ensuring code quality.
  • Security: Knowledge of J2EE security concepts and implementation of secure coding practices.

Senior

  • Java Message Service (JMS): Proficiency in using JMS for asynchronous communication between distributed systems.
  • Performance Optimization: Ability to optimize J2EE applications for better performance and scalability.
  • Design Patterns: Deep understanding of various design patterns and their application in J2EE development.
  • Microservices Architecture: Experience with building and deploying microservices-based architectures using J2EE technologies.
  • Cloud Computing: Knowledge of deploying J2EE applications on cloud platforms like AWS or Azure.
  • Monitoring and Logging: Proficiency in using monitoring and logging tools to diagnose and troubleshoot application issues.
  • Code Review: Ability to conduct code reviews and provide constructive feedback to other developers.
  • Leadership: Strong leadership and mentoring skills to guide junior developers and lead development teams.

Expert/Team Lead

  • Containerization: Expertise in containerization technologies like Docker and Kubernetes for efficient application deployment.
  • Continuous Integration/Deployment: Proficiency in setting up CI/CD pipelines using tools like Jenkins or GitLab.
  • Performance Tuning: Ability to fine-tune application performance by analyzing bottlenecks and optimizing code and infrastructure.
  • System Architecture: Experience in designing and architecting complex, scalable, and high-performance J2EE systems.
  • Project Management: Strong project management skills to plan, execute, and deliver software projects within deadlines.
  • Code Refactoring: Ability to refactor existing codebase to improve maintainability, performance, and scalability.
  • Team Collaboration: Excellent communication and collaboration skills to work effectively with cross-functional teams.
  • Emerging Technologies: Awareness of emerging technologies and trends in the J2EE ecosystem to stay up-to-date with industry advancements.
  • Problem Solving: Strong analytical and problem-solving skills to identify and resolve complex technical issues.
  • Code Documentation: Proficiency in writing clear and concise technical documentation for code and system architecture.
  • Technical Training: Ability to conduct technical training sessions and workshops to upskill team members.

Pros & cons of J2EE

Pros & cons

6 Pros of J2EE

  • J2EE provides a robust and scalable platform for developing enterprise-level applications. It offers a wide range of libraries, APIs, and tools that simplify the development process and enable developers to build complex applications with ease.
  • J2EE has excellent support for distributed computing. It allows developers to build applications that can be deployed across multiple servers, enabling efficient load balancing and fault tolerance.
  • J2EE promotes code reusability through its component-based architecture. Developers can create reusable components such as Enterprise JavaBeans (EJBs) and JavaServer Pages (JSPs), which can be easily integrated into different applications, saving time and effort.
  • J2EE provides robust security features to protect applications from unauthorized access and ensure data integrity. It supports various authentication and authorization mechanisms, encryption algorithms, and secure communication protocols.
  • J2EE offers excellent support for transaction management. It provides built-in mechanisms for handling database transactions, ensuring data consistency and reliability in complex enterprise applications.
  • J2EE has a vibrant and active community of developers. This means there is a wealth of resources, documentation, and support available for J2EE developers, making it easier to troubleshoot issues and stay up-to-date with the latest developments in the technology.

6 Cons of J2EE

  • J2EE can be complex and has a steep learning curve for developers who are new to the platform. It requires a good understanding of various concepts and technologies, such as Servlets, JSPs, EJBs, and XML, which can be overwhelming for beginners.
  • J2EE applications tend to be resource-intensive and can require significant hardware and infrastructure investments to ensure optimal performance and scalability.
  • J2EE applications can be slower compared to other lightweight frameworks due to the overhead of the platform. This can be a disadvantage in scenarios where high performance is critical.
  • J2EE applications can be more difficult to deploy and manage compared to simpler frameworks. The complexity of the platform can make the deployment process more time-consuming and error-prone, requiring experienced administrators to handle the setup and configuration.
  • J2EE’s component-based architecture can sometimes lead to a higher development overhead. Developers need to carefully design and configure components, which can increase development time and effort compared to more straightforward frameworks.
  • J2EE can be seen as a heavyweight solution for smaller applications or projects with limited requirements. It may introduce unnecessary complexity and overhead in such scenarios, where a simpler framework could be a more suitable choice.

Cases when J2EE does not work

Does not work
  1. J2EE may not be suitable for small-scale applications: While J2EE is a robust and scalable platform, it may be overkill for smaller projects that do not require the extensive features and complexity offered by the J2EE stack. Developing a simple web application or a basic CRUD (Create, Read, Update, Delete) system can often be achieved more efficiently using lightweight frameworks like Spring Boot or Ruby on Rails.
  2. Performance limitations: J2EE’s enterprise-level capabilities come with a certain level of overhead. In scenarios where high-performance and low latency are critical, such as real-time systems or high-frequency trading applications, J2EE’s resource-heavy nature can hinder the performance. In such cases, a more lightweight and specialized framework or technology stack may be more suitable.
  3. Difficulty in learning curve and development time: J2EE is a comprehensive platform with a steep learning curve. Its vast array of specifications, APIs, and tools can be overwhelming for developers who are new to the J2EE ecosystem. Consequently, the development time required to build J2EE applications might be longer compared to using simpler frameworks or platforms.
  4. Cost considerations: J2EE application servers, such as WebSphere or WebLogic, often come with a significant price tag. Additionally, maintaining and scaling J2EE applications can require specialized skills and expensive infrastructure. For organizations with budget constraints or those looking for cost-effective solutions, J2EE might not be the most optimal choice.
  5. Incompatibility with certain technologies: J2EE’s strict adherence to standards and specifications can sometimes lead to compatibility issues with newer or non-standard technologies. For instance, integrating J2EE with NoSQL databases, such as MongoDB, might require additional effort due to the differences in data access patterns and object-relational mapping.

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