Intermediate and Advanced Java 8 Training Course

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Intermediate and Advanced Java 8 Training


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Java Programming Stats-Uses and Pros-Cons
Course Description
This is a fast-paced course suitable for developers with some previous experience in working with Java and Object-Oriented (OO) programming. The course can also be delivered to developers experienced in other OO languages (Python, C++, C#) but with limited Java exposure, as well as used as an advanced Java course for more experienced developers. There are numerous optional parts allowing you to tailor the coverage to your group. It includes an accelerated, yet thorough hands-on review of Java foundational concepts, with attention given to OO design and implementation principles. It then moves on to comprehensive coverage of more advanced topics in Java and OO development to provide participants with a strong grounding to use Java in a sophisticated and productive manner. This course covers far more than an introductory course, including important topics such as UML and Design Patterns, and using composition vs. inheritance, which are all key to creating well-structured OO systems. After these important areas, it moves on to advanced Java topics such as inner classes, reflection, writing generic classes, and functional programming with lambdas and streams. It teaches a number of useful techniques that enhance productivity and good system design - which may otherwise take Java developers years to absorb on their own. The course concludes with build tools and logging. Course Length: 5 Days Course Tuition: $2090 (US)

Prerequisites
Solid understanding of OO concepts in Java.

Course Outline

Session 1: Review - Basics

Java Environment

Classes and Objects

Instance Variables, Methods, Constructors, Static Members

OO Principles: Data Encapsulation, Cohesion

Object Contracts: toString(), equals() and hashCode(), Comparable and Comparator

Packages, Enums, Arrays

Exceptions

Session 2: Review (Inheritance and Interfaces)

UML Overview

Inheritance

Definition and IS-A Relationship

Method Overriding, @Override

OO Principles: Principle of Substitutability, Polymorphism and Encapsulation of Type, Coupling, Open-Closed Principle

Constructor Chaining

Interfaces

Defining and Implementing, Interface Types

Interface Inheritance

New Interface Features in Java 8

Default Methods, Static Methods

Functional Interfaces

Guidelines

Session 3: JUnit

Overview

Tests, Assertions, and Fixtures

Writing and Running Tests

Assertions

Test Fixtures, @Before and @After, @BeforeClass and @AfterClass

Testing for Exceptions

Best Practices and Test-Driven Development Overview (TDD)

Session 4: Collections and Generics

Collections Overview

Generics and Type-Safe Collections

Diamond Operator

Lists, Sets, and Maps

Interfaces and Contracts

Iteration and Autoboxing

Utility Classes - Collections and Arrays

Writing Generic Classes

Inheritance with Generic Types

Wildcard Parameter Types

Type Erasure

Session 5: Techniques of Object Creation

Design Patterns Overview

Controlling Object Creation

Limitations of new Operator, Alternative Techniques

Singleton Pattern

Simple Factory

Factory Method Pattern

Other Techniques

Named Objects, JNDI

Dependency Injection Frameworks

Session 6: Using Composition and Inheritance Effectively

Inheritance and Composition - Pros and Cons

Composition and Delegation

HAS-A, USES Relationships

Strategy Pattern

Decorator Pattern

Façade and Other Patterns

Façade, Proxy, Template Method

Session 7: Inner Classes

Overview and Motivation

Stronger Encapsulation, Rules and Caveats

Defining and Using Inner Classes

Member-Level, Method-Local, Anonymous Classes

Static Nested Classes

Nested Classes, Nested Interfaces, Nested Enums

Session 8: Annotations

Overview

Using Annotations

Target and Retention Policy

Annotation Parameters, Parameter Shortcuts

Writing Custom Annotations

Syntax, Using the Meta-Annotations

Using a Custom Annotation

Session 9: Reflection

Overview and API

The Class Called Class

Obtaining and Inspecting Class Objects

Working with Objects Reflectively

Creating Instances, Invoking Methods, Setting Field Values

Session 10: Lambda Expressions

Overview

Functional Interfaces and Lambdas

Target Context

Using Lambda Expressions

Syntax, Lambda Compatibility

Variable Capture

Type Inference

Method References

Three Types of Method References

Refactoring Lambdas into Method References

Session 11: Streams

Overview

Streams vs. Collections

Anatomy of a Stream

Understanding the Stream API

Intermediate Operations and Stream Pipeline

Java 8 Functional Interfaces: Predicate, Comparator, Function, Consumer, Supplier

Stream Processing

Filtering, Sorting, Mapping

Terminal Operations

Collectors

Partitioning and Grouping

Reducing and Summarizing

Downstream Reductions

Session 12: Date/Time API

Overview

Dates, Times, and Instants

Creating, Parsing, and Formatting

Accessing Date and Time Fields

Deriving New Values

Time Zones

Periods and Durations

Intervals of Time: Date-Based and Time-Based

Adding and Subtracting Intervals

Session 13 (optional): Overview of Build Tools

Javadoc

Generating API Documentation

Doc Comments and Doc Tags

Ant

History and Overview

Buildfiles, Targets, and Tasks

Maven

Maven Concepts: Project, POM, Artifact, Naming, Dependency, Plugin, Repository

Convention over Configuration

Lifecycles and Phases

Plugins and Goals

Session 14 (optional): Logging and Log4j

Overview

Popular Logging Frameworks

Writing Log Messages

Creating Loggers and Writing Log Messages

Log Levels

Configuration

Appenders and Layouts

Logger Configuration and Logger Hierarchy

Course Directory [training on all levels]

Technical Training Courses

Software engineer/architect, System Admin ... Welcome!

Business Training Courses

Project Managers, Business Analysts, Paralegals ... Welcome!

Upcoming Classes

Gain insight and ideas from students with different perspectives and experiences.

VMware vSphere 8.0 with ESXi and vCenter
9 December, 2024 - 13 December, 2024
Introduction to C++ for Absolute Beginners
16 December, 2024 - 17 December, 2024
Introduction to Spring 5 (2022)
16 December, 2024 - 18 December, 2024
Ruby Programming
2 December, 2024 - 4 December, 2024
Microsoft Azure AI Fundamentals (AI-900T00)
25 November, 2024 - 25 November, 2024
See our complete public course listing

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,

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...