Fast Track to Java 8, Republic of the Philippines

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Java 8 is the most important update to Java since its inception. The limits of the existing language have been exposed by the challenge of multi-core hardware, the industry adoption of functional principles, the continued evolution of C# and the growing adoption of alternative JVM languages like Scala and Clojure.

This new release of Java aims to address these concerns via new language features, enhancements to existing libraries and numerous low level improvements to the JVM itself. Developers can use these enhancements to write shorter, safer applications that are amenable to multi-core devices.

This course enables experienced Java developers to understand the full range of features arriving in Java 8 and to start using them immediately.

Delegates must be proficient in Java 7 with several years of experience developing in industry.

Overview of What’s New

The introduction and assimilation of lambdas into Java
Functional and parallel support within the code libraries
The new Date and Time (JSR 310) and Type Annotation (JSR 308) API’s
Many additional libraries and virtual machine enhancements

Working With Lambda Expressions

Understanding the concept and purpose of lambdas
The various syntax options when declaring lambdas
Lexical scoping and ‘effectively final’ variables
Method references as shortcuts to lambdas
Type inference of parameters in lambdas
Best practices when declaring and using lambdas
Declaring interfaces to be used with lambdas
Making use of the @FunctionalInterface annotation
How lambdas are implemented at the bytecode level
Limitations of lambdas compared to other languages

Functional Programming With Lambdas, Collections and Streams

Introducing the java.util.stream.Stream interface
Creating streams of objects from collections and via of
Using parallel and sequential to switch processing model
Performing filtering and mapping on the contents of streams
Using reduce to compute a final value from a stream
Understanding the purpose and value of flatMap
Performing bulk operations on the elements of collections
The Optional Monad and Monadic Composition

Other Language Features

Default implementations for interface methods (aka Extension Methods)
Parallel array sorting using new methods in java.util.Arrays
Enhancements to type inference (aka Generalized Target-Type inference)
Better support for globalization (Unicode 6.2 and BCP 47 language tags)
Scalable thread-safe counters in java.util.concurrent
Enhancements to reflection using the javax.lang.model types
Standardised support for Base 64 encoding and decoding
Programmatic support for working with JavaDoc
Improvements in the security libraries
Support for unsigned integer arithmetic via static methods

The Date and Time API

How JSR310 evolved from the Joda Time library
Working with instants, clocks and time zones
Performing calculations with dates and times
Using adjusters to make common changes to dates
Parsing and formatting dates and times
Combining the API with legacy code

Enhancements to Annotations

Limitations on existing support for annotations
How annotating usage enables stronger code contracts
Annotating type parameters in generic code
Annotating inheritance relationships
Annotating exception specifications
Annotating calls to new, instanceof and casts
Using annotations multiple times on the same type

JVM and JDK Improvements

Compact profiles for the JVM
How HotSpot merges with JRockit in Java8
Why the PermGem region has been removed
Retirement of some garbage collection settings
Enhancements to the invokedynamic instruction
Enhanced control of the Java compiler at runtime
The Nashorn JavaScript compiler

Upcoming Trainings

Join our public courses in our Republic of the Philippines facilities. Private class trainings will be organized at the location of your preference, according to your schedule.

Classroom / Virtual Classroom

04 September 2024