Oracle Certified Professional: Java SE 11 Developer Mastery (Expert Level)

Topics covered

• apply annotations to classes and methods
• build and declare custom annotations
• classify the information that can be retrieved using ThreadInfo
• convert unsecure socket code to secure socket code
• create and use resource bundles
• describe common threading problems, including deadlocks and livelocks
• describe JCA, including its architecture and the principles surrounding it
• describe the Engine class and list the Engine classes available in JCA
• describe the Enum classes and how they are used in JDBC
• describe the Executor interface and classes that can be used to get tunable thread pools
• describe the guidelines for data integrity, with focus on injections, inclusion, and input validation
• describe the purpose of annotations and their typical uses
• format dates, numbers, and messages in Java SE 11
• generate and verify signatures using generated keys
• list synchronization classes and memory consistency properties that can be used in concurrency
• list the essential Enums provided in the Annotation package that can help classify and specify retention policies
• prevent Denial-of-Service in Java applications
• recall the exceptions that can be thrown while working with concurrency
• recognize enhancements to the features of the javax.sql package
• recognize the commonly used annotations in the Java SE 11 Development Kit
• secure confidential information in Java applications
• secure serialization and deserialization in Java
• use PreparedStatement to perform CRUD operations
• use RowSet objects to manage data
• use the CountDownLatch and CyclicBarrier classes
• use the DatabaseMetaData and ParameterMetaData interfaces
• use the ForkJoinPool and ForkJoinTask methods to manage concurrent tasks
• use the Locale class
• use the PreparedStatement and CallableStatement APIs to perform database operations
• use the TimeUnit enum