Topics

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Language Enhancements

Develop code that uses String objects in the switch statement, binary literals, and numeric literals, including underscores in literals

Develop code that uses try-with-resources statements, including using classes that implement the AutoCloseable interface

Develop code that handles multiple Exception types in a single catch block

Use static and default methods of an interface including inheritance rules for a default method

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Concurrency

Use classes from the java.util.concurrent package including CyclicBarrier and CopyOnWriteArrayList with a focus on the advantages over and differences from the traditional java.util collections

Use Lock, ReadWriteLock, and ReentrantLock classes in the java.util.concurrent.locks and java.util.concurrent.atomic packages to support lock-free thread-safe programming on single variables

Use Executor, ExecutorService, Executors, Callable, and Future to execute tasks using thread pools

Use the parallel Fork/Join Framework

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Localization

Describe the advantages of localizing an application and developing code that defines, reads, and sets the locale with a Locale object

Build a resource bundle for a locale and call a resource bundle from an application

Create and manage date- and time-based events by using LocalDate, LocalTime, LocalDateTime, Instant, Period, and Duration, including a combination of date and time in a single object

Format dates, numbers, and currency values for localization with the NumberFormat and DateFormat classes, including number and date format patterns

Work with dates and times across time zones and manage changes resulting from daylight savings

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Java File I/O (NIO.2)

Operate on file and directory paths by using the Paths class

Check, delete, copy, or move a file or directory by using the Files class

Recursively access a directory tree by using the DirectoryStream and FileVisitor interfaces

Find a file by using the PathMatcher interface, and use Java SE 8 I/O improvements, including Files.find(), Files.walk(), and lines() methods

Observe the changes in a directory by using the WatchService interface

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Lambda

Define and write functional interfaces and describe the interfaces of the java.util.function package

Describe a lambda expression; refactor the code that uses an anonymous inner class to use a lambda expression; describe type inference and target typing

Develop code that uses the built-in interfaces included in the java.util.function package, such as Function, Consumer, Supplier, UnaryOperator, Predicate, and Optional APIs, including the primitive and binary variations of the interfaces

Develop code that uses a method reference, including refactoring a lambda expression to a method reference

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Java Collections

Develop code that uses diamond with generic declarations

Develop code that iterates a collection, filters a collection, and sorts a collection by using lambda expressions

Search for data by using methods, such as findFirst(), findAny(), anyMatch(), allMatch(), and noneMatch()

Perform calculations on Java Streams by using count, max, min, average, and sum methods and save results to a collection by using the collect method and Collector class, including the averagingDouble, groupingBy, joining, partitioningBy methods

Develop code that uses Java SE 8 collection improvements, including the Collection.removeIf(), List.replaceAll(), Map.computeIfAbsent(), and Map.computeIfPresent() methods

Develop code that uses the merge(), flatMap(), and map() methods on Java Streams

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Java Streams

Describe the Stream interface and pipelines; create a stream by using the Arrays.stream() and IntStream.range() methods; identify the lambda operations that are lazy

Develop code that uses parallel streams, including decomposition operation and reduction operation in streams