Creating Java classes

• Encapsulation and inheritance concepts.
• Polymorphism and methods.
• Singleton classes, immutable classes.
• Nested classes, enumerated types and lambda expressions.

Collections and genericity

• Generic classes.
• The java.util.Comparator and java.lang.Comparable interfaces, filters and the Stream API.
• The forEach method of Stream.
• The Stream interface and the sequences of operations.
• Method references with the Stream API.

Predefined functional interfaces

• Predefined interfaces of the java.util.function package.
• Primitive versions of functional interfaces.
• Binary versions of functional interfaces.
• The UnaryOperator interface.

The Java Stream API

• Extracting and searching for data using Stream API methods.
• The Optional class. Treatment methods.
• Sorting a collection. Storing the results.
• flatMap() methods.

Exceptions, assertions and the Java SE 8 API: date/time

• The try-catch, throw and catch clauses.
• Auto-closeable resources.
• Custom exceptions and Auto-closeable resources.
• Invariants and events related to dates and time.
• Creating and managing date- and time-related events.

Inputs and outputs

• The data on the console. The classes of the java.io package.
• The Path interface. The Files class.
• Using the Stream API with NIO.2.

Competing accesses

• Creating threads.
• The keyword synchronized and the java.util.concurrent.atomic package.
• The java.util.concurrent collections.
• The Fork/Join framework and parallel streams.

Database access with JDBC and internationalization

• The interfaces that form the core of APIs.
• Components for the database.
• Creating queries and reading the results.
• Configuring the language with a "Locale" object.
• Creating and reading a Properties file and creating a resource bundle.