Java Fundamentals Training Overview
This Java Application Development Fundamentals training course introduces Java programming and object-oriented (OO) development principles. Attendees learn newer Java features, including the Java 9+ module structure, common APIs like Java Collections Framework and JDBC/JPA, and the Java release cycle and Long Term Support (LTS) releases. This Java course is current to Java 11-17.
Location and Pricing
Accelebrate offers instructor-led enterprise training for groups of 3 or more online or at your site. Most Accelebrate classes can be flexibly scheduled for your group, including delivery in half-day segments across a week or set of weeks. To receive a customized proposal and price quote for private corporate training on-site or online, please contact us.
In addition, some courses are available as live, instructor-led training from one of our partners.
Objectives
- Understand Java’s importance, uses, strengths and weaknesses
- Understand the release cycle and Long Term Support (LTS) releases
- Understand Java language basics
- Write, compile, and run Java programs
- Use the Java shell (JShell - Java 9+) for interactive programming
- Understand the Object Model and Object Oriented Programming
- Understand and use classes, inheritance, polymorphism
- Create well-designed classes and use them in your Java programs
- Use composition and delegation to create objects from other objects
- Understand and use packages to organize code
- Understand and use Java 9 modules
- Understand interfaces, their importance, and their uses
- Use interfaces to implement abstraction
- Learn good Java coding style
- Create well-structured Java programs
- Compile and execute programs with the JDK development tools and with an Integrated Development Environment (IDE) of your choice
- Use the core Java libraries (java.lang, java.util)
- Understand and use exceptions for error handling
- Understand the basics of using JDBC and JPA, and use them to access databases from Java
- Use the Java Collections Framework, including the new API introduced in Java 9-11
- Use other new features, such as type inference
- Use the new features of Java 11-17, as well as important advanced features of earlier Java versions
- Understand and use basic I/O streams (Optional)
Prerequisites
All attendees must have working knowledge of a modern programming language; no Java experience is needed.
Outline
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Java Overview
- Language and Platform Features
- A Simple Java Program
- The Java Release Cycle
- Program Lifecycle
- The Java SE Development Kit (JDK)
- Hello World: A Simple Application
Class and Object Basics
- The Object Model and Object-Oriented Programming
- Classes, References, and Instantiation
- Adding Data to a Class Definition
- Adding Methods (Behavior)
- Exploring Types and Object Instances
- Introducing your IDE
- Writing and Using a Class Definition with Fields and Methods
More on Classes and Objects
- More about Methods
- Encapsulation and Access Control, public and private Access
- Constructors and Initialization
- static Members of a Class
- Accessor Methods
- Encapsulation / Access Protection
- Writing and Using Constructors
- Static Members (Optional)
Flow of Control
- Branching: if, if-else, switch
- Iteration: while, do-while, for, break, continue
- Data Validation
More about Classes and Objects
- Type-safe Enums
- Wrapper Classes
- Java 8+ Date/Time Support
- Working with References
- Formatted Output
- Using Enums
- Working with Dates and Times
- Using the Debugger
Strings, Arrays, and Dates/Times
- String, StringBuffer, StringBuilder
- Arrays, Primitive Arrays, Arrays of Reference Types
- Varargs
- Using Strings and Arrays
Packages and Modules
- Package Overview Using Packages to Organize Code
- Creating Packages, Package Statements, and Required Directory Structure
- Import Statements
- Classpath
- Java Modules Overview
- Defining Modules, Requires, and Exports
- Module Path and Classpath Differences and Coexistence
- Using Packages
- Using Java Modules
Composition and Inheritance
- Using Composition to Deal With Complexity
- Composition/HAS-A, Delegation
- Using Inheritance to share a Commonality
- IS-A, extends Inheriting Features
- Constructor Issues
- Overriding Methods, @Override, Using Polymorphism
- Abstract Classes
- Working with Composition (Optional)
- Using Inheritance
- Polymorphism
Interfaces
- Defining and Implementing Interfaces
- Using Interfaces
- Default Methods and Static Methods
- Using Interfaces to Remove Implementation Dependencies
- Using Default and Static Methods
Exceptions
- Exceptions and the Exception Hierarchy
- Throwing Exceptions and Checked Exceptions
- Try and Catch
- Handling Exceptions
- Try and catch
- Program Flow with Exceptions
- Multicatch, Finally, Try-with-resources
- Throwing Exceptions
- Checked Exceptions
Java Collections and Generics
- The Collections Framework and its API
- Collections and Java Generics
- Collection, List, Set, Map
- Autoboxing
- Collections of Object (non-generic)
- Using ArrayList, HashSet, and HashMap
- For-each Loop
- Processing Items With an Iterator
- More About Generics
- Using Collections and Generics
Database Access with JDBC and JPA
- JDBC Overview
- JDBC Defined Types
- Example of JBDC Usage
- JPA Architecture and Programming View
- Mapping Entity Classes with Annotations
- Persistence Unit, EntityManagerFactory, and EntityManager
- Working with JPA (Find by primary key and inserts)
- Mapping an Entity Class
- Using JPA
- Insert/Query Demo
I/O Streams (Optional)
- I/O Streams Overview
- Readers and Writers
- Exception Handling
- Byte Streams
- Working with Files
- NIO, Paths, Files
- Reading and Writing Files
- Using Byte Streams (Optional)
Additional Language Features (Optional)
- Functional Interfaces and Lambda Expressions
- Switch Expressions
- Other Java Features
- Working with Lambdas
Conclusion
Training Materials
All Java training students receive comprehensive courseware.
Software Requirements
- A recent version of Windows, macOS, or Linux with at least 8 GB RAM
- JDK 11 or later
- The Java tool the students are likely to use after the class (Eclipse or IntelliJ IDEA are recommended)
- Other free software - please contact us if you have purchased this class
