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<h2>Java EE 7 Application Developer (1Z0-900)</h2><h3>Exam Overview</h3><p>The Oracle 1Z0-900: Java EE 7 Application Developer certification exam is designed for enterprise Java developers who want to validate their expertise in developing and deploying applications using Java Enterprise Edition 7 technologies. This professional-level certification tests candidates' ability to build robust, secure, and scalable enterprise applications following Java EE 7 specifications and best practices.</p><h3>Exam Information</h3><p>This certification focuses on the core and advanced Java EE 7 technologies including Enterprise JavaBeans, JavaServer Faces, Java Persistence API, Contexts and Dependency Injection, RESTful web services, and more. The 1Z0-900 validates a developer's ability to architect and implement enterprise-scale applications using the Java EE 7 platform and its associated frameworks.</p><h3>Key Topics Covered</h3><ul><li>Java EE 7 architecture and design patterns</li><li>Web application development using Servlets and JSF</li><li>Enterprise application components with EJB</li><li>Data persistence using JPA</li><li>Dependency injection with CDI</li><li>RESTful and SOAP web services</li><li>Bean validation</li><li>Application security</li><li>Messaging with JMS</li><li>Batch processing</li><li>Concurrency utilities</li></ul><h3>Target Audience</h3><p>This exam is ideal for:</p><ul><li>Enterprise Java developers</li><li>Java application architects</li><li>Backend developers working with Java EE</li><li>Software engineers building enterprise systems</li><li>IT professionals specializing in Java technologies</li><li>Web service developers</li><li>Full-stack Java developers</li></ul><h3>Exam Format</h3><ul><li>Multiple-choice and multiple-select questions</li><li>80 questions</li><li>Time limit: 150 minutes (2.5 hours)</li><li>Passing score: 65% (65 out of 100)</li><li>Proctored examination environment</li><li>Available in multiple languages</li></ul><h3>Skills Measured</h3><h4>Java EE 7 Foundations (20%)</h4><ul><li>Understand Java EE architecture</li><li>Apply design patterns and components</li><li>Use CDI and bean validation</li><li>Implement security features</li><li>Handle exceptions in Java EE</li></ul><h4>Web Applications with Servlets and JSF (20%)</h4><ul><li>Create dynamic web pages with Servlets</li><li>Use JavaServer Faces for UI development</li><li>Manage HTTP sessions</li><li>Implement filters and listeners</li><li>Handle web application security</li></ul><h4>Enterprise JavaBeans (15%)</h4><ul><li>Develop stateless and stateful session beans</li><li>Implement message-driven beans</li><li>Apply transaction management</li><li>Use EJB Timer Service</li><li>Configure EJB security</li></ul><h4>Persistence with JPA (15%)</h4><ul><li>Map entities to database tables</li><li>Create and manage EntityManager</li><li>Develop JPQL and Criteria API queries</li><li>Implement entity relationships</li><li>Handle JPA lifecycle events</li></ul><h4>Web Services (15%)</h4><ul><li>Create RESTful web services with JAX-RS</li><li>Implement SOAP web services with JAX-WS</li><li>Process XML and JSON in web services</li><li>Handle web service security</li><li>Apply exception handling in web services</li></ul><h4>Enterprise Applications (15%)</h4><ul><li>Develop with JMS for messaging</li><li>Implement batch processing with Batch API</li><li>Use Java EE Concurrency Utilities</li><li>Create asynchronous applications</li><li>Develop WebSocket-based applications</li></ul><h3>Preparation Resources</h3><ul><li>Oracle University training courses</li><li>Official Java EE 7 documentation</li><li>Oracle Java EE certification study guides</li><li>Practice tests and exam simulations</li><li>Enterprise Java programming courses</li><li>Hands-on development projects</li><li>Community forums and study groups</li></ul>

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