HARTMANN software group

Java 8 New Features Training in Roanoke

Enroll in or hire us to teach our Java 8 New Features class in Roanoke, Virginia by calling us @303.377.6176. Like all HSG classes, Java 8 New Features may be offered either onsite or via instructor led virtual training. Consider looking at our public training schedule to see if it is scheduled: Public Training Classes
Provided there are enough attendees, Java 8 New Features may be taught at one of our local training facilities.
We offer private customized training for groups of 3 or more attendees.
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Course Description

  
Java 8 introduces a number of revolutionary capabilities - many of them centered on lambda expressions and functional-style programming. These capabilities add powerful new programming techniques to the language, but also add complexity.
 
This concise course is focused on introducing the new capabilities and how to use them. It includes numerous code examples and programming labs that illustrate all of the new capabilities.
 
The course is hands on, and requires that students be comfortable with writing general Java code at an intermediate level, including the use of interfaces.
 
Course Objectives:
- Be familiar with the additions to Java interfaces
- Understand and use functional interfaces
- Understand lambda expressions and method references, and use them to pass behavior (methods)
- Learn about the pre-defined functional interfaces, and use them with lambda expressions
- Understand and use the Stream API
- Process collections using streams, including chaining operations and using collectors
- Understand and use parallel streams
- Understand and deal with the issues of parallel processing
- Learn and use the new Data/Time API
- Be familiar with other new capabilities
Course Length: 2 Days
Course Tuition: $690 (US)

Prerequisites
No programming experience necessary

Course Outline

  
1: What's new in Interfaces
Static Methods
Default Methods
Functional Interfaces
 
2: Introducing Lambda Expressions
Motivation for Lambdas
Lambda Expression Overview
Lambda Expressions and Functional Interfaces
Using Lambda Expressions
Working with Method References
 
3: The Stream API
Overview
Shortcomings of Collections
What are Streams?
Chaining - Intermediate and Terminal Operations
- Understanding the Stream API
Overview - java.util.stream types (Stream, Collector, ...)
Keys to Understanding the API
Important Functional Interfaces: Predicate, Comparator, Function
- Stream Processing
Using filter()
Sorting / Comparator.comparing()
Using map()
Other operations: peek(), distinct(), limit(), skip()
Result producing terminal operations - collect, min/max ...
void Terminal Operations - forEach()
Existence (e.g. anyMatch) and Finder (e.g. findAny) Operations
- Collectors
Roles and Capabilities
Collectors.toList(), Collectors.toSet()
Supplier and Collectors.toCollection()
Partitioning and Grouping Collectors
 
4: Parallel Processing and Concurrency
li>Overview
Java 8 Parallel Processing using Streams
Ground Rules / Requirements for Using Parallel Stream Processing
Multithreading / Concurrency Issues
Race Conditions, Data Synchronization, Locks
Performance Issues and Considerations
 
5: Date/Time API
Overview and Limitations of Previous API
The Date/Time API (JSR 310)
Creating and Working with LocalData/LocalTime/LocalDateTime Instances
Formatting Date/Time
Localization / Time Zones
Periods and Durations
Performing Calculations on Data/Time types
 
6: Other Capabilities
Compact Profiles
Using Optional Instead of null
Repeatable and Type Annotations
Nashorn JavaScript Engine
Minor New Features

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Java Programming Uses & Stats

Java Programming is Used For:
Android & IOS Development Software Products Video Games Desktop GUI's
Difficulty
Popularity
Year Created
1995
Pros

Most Commonly Used: 
According to Oracle, three billion devices run on Java.  And, because of its real-world applications, it consistently ranks at the top of the TIOBE Programming Community Index. 

Great Career Choice: 
Some of the fastest-growing salaries in the U.S. in 2018 are for Java developers.  (Glassdoor)  

Android Apps Development:
Developers predominatly use their Java skills in building apps for Google's Android. The Android platform is the number one mobile paltform in the world

It Can Run On Any Platform:
Java can compile on Windows and run the same compiled file on Linux, Windows and Mac.

Great Supporting IDE's:
Over the years, coding in Java has become simpler with the introduction of open source development tools, i.e. Eclipse and NetBeans that use Java capabilities for debugging.  
 
Cons

Uses a Lot of Memory:
Performance can be significantly slower with Java and more memory-consuming than natively compiled languages such as C or C++.

Difficulty in Learning: 
Learning Java can be a bit challenging if you are a beginner.  However, once you get the hang of Object Oriented Programming and a decent grasp of the syntax, you will be well on your way.

Slow Start Up Times:
There is quite a bit of one-time initialization done by JDK classes before compiling as well as loading classes and verification (making sure code doesn't do evil things, all of which takes longer that some other languages such as C. 

Verbose and Complex Code:
Long, over-complicated sentences make code less readable and scannable. Compare to let's say Python, we can see how clear Python code appears: It doesn’t require semicolons; uses “and,” “or,” and “not” as operators instead of Java’s “&&,” “||,” and “!”; and generally has fewer bells and whistles such as parentheses or curly braces.

Commercial License Cost:
Companies have to prepare for the changes that Oracle will institute in 2019 . Today, the current version of Java is free and available for redistribution for general purpose computing. However, If you are a DEVELOPER, Oracle recommends you review the roadmap information for Java SE 8 and beyond and take appropriate action depending on the type of application you develop and your distribution mode.
Java Programming Job Market
Average Salary
$102,000
Job Count
26,856
Top Job Locations

New York City 
San Jose
Washington D.C, 
Complimentary Skills to have along with Java Programming

- If you are an experienced Java developer, learning a complimentary language to Java should come much more naturally.  As an example JetBrains recently created the Kotlin programming language which is officially supported by Google for mobile development.  Kotlin compiles to Java bytecode and runs on the JVM; it's purported to address many of Java's shortcomings...

Interesting Reads Take a class with us and receive a book of your choosing for 50% off MSRP.