Exploring the Oracle Certified Professional: Java SE 11 Developer Certification

Oracle Certified Professional: Java SE 11 Developer is a certification for developers who want to showcase their proficiency in Java programming and software development. This certification is recognized and valued by a variety of industries around the world.

To obtain this certification, candidates must pass the 1Z0-819 exam, which consists of 50 multiple choice questions and must be completed within 90 minutes. A passing score of 68% is required to become an Oracle Certified Professional: Java SE 11 Developer. The exam has been validated for the product version Java 11, which means that certified individuals have the most up-to-date knowledge and skills in Java SE 11 development.

One of the core areas covered in this exam is working with Java data types. This includes understanding primitives and wrapper classes, operators, type promotion and casting, and using String and StringBuilder classes. The exam also tests candidates' knowledge on controlling program flow, creating and using loops, if/else and switch statements.

A thorough understanding of the Java object-oriented approach is crucial for becoming an Oracle Certified Professional: Java SE 11 Developer. This includes being able to declare and instantiate Java objects, utilize fields and methods, understand variable scopes, and create subclasses and superclasses. Knowledge of polymorphism, casting and interfaces is also important, along with understanding how to create and use enumerations.

Exception handling is another essential skill for Java developers, and this certification exam tests candidates on their ability to handle exceptions using try/catch/finally clauses and try-with-resource statements, as well as creating custom exceptions.

Working with arrays and collections is also a crucial component of the exam. Candidates must demonstrate knowledge of generics, sorting collections and arrays using Comparator and Comparable interfaces, and working with List, Set, Map, and Deque collections.

Java Streams and lambda expressions are also covered in this exam, including implementing functional interfaces and using Streams to filter, transform and process data. Candidates are also tested on their understanding of the Java Platform Module System and how to deploy and execute modular applications.

Concurrency, or the ability to manage multiple tasks at once, is also an important aspect of being a skilled Java developer. The 1Z0-819 exam covers creating worker threads, utilizing locking mechanisms, and developing thread-safe code.

Other topics that are tested in the exam include the Java I/O API for reading and writing data, secure coding practices to mitigate security threats, database applications with JDBC, localization, and annotations.

Becoming an Oracle Certified Professional: Java SE 11 Developer is not only a validation of one's skills and knowledge in Java development, but it also demonstrates a commitment to continuous learning and staying up-to-date with the latest advancements in the industry. This certification can open up a variety of job opportunities for individuals and also add credibility to their resume.

In conclusion, the Oracle Certified Professional: Java SE 11 Developer certification is a valuable asset for Java developers to have. It showcases their expertise in Java programming and software development, and is recognized and respected by organizations globally. With this certification, individuals can demonstrate their proficiency in Java SE 11 and stand out in a competitive job market.