Basic Java Programming for Developers New to OO (C, COBOL, etc.)

1. The Java Platform

• Introduce the Java Platform
• Explore the Java Standard Edition
• Discuss the lifecycle of a Java Program
• Explain the responsibilities of the JVM
• Executing Java programs
• Garbage Collection
• Documentation and Code Reuse

2. Using the JDK

• Explain the JDK’s file structure
• Use the command line compiler to compile a Java class
• Use the command line Java interpreter to run a Java application class

3. Using the IntelliJ IDE

• Introduce the IntelliJ IDE
• The Basics of the IntelliJ interface
• IntelliJ Projects and Modules
• Creating and running Java applications
• Tutorial: Working with the IDE (This course is also offered using Eclipse – please inquire for details and options)

4. Writing a Simple Class

• Write a Java class that does not explicitly extend another class
• Define instance variables for a Java class
• Create object instances
• Primitives vs Object References
• Implement a main method to create an instance of the defined class
• Java keywords and reserved words

5. Adding Methods to the Class

• Write a class with accessor methods to read and write instance variables
• Write a constructor to initialize an instance with data
• Write a constructor that calls other constructors of the class to benefit from code reuse
• Use the this keyword to distinguish local variables from instance variables

6. Object-Oriented Programming

• Real-World Objects
• Classes and Objects
• Object Behavior
• Methods and Messages

7. Language Statements

• Arithmetic operators
• Operators to increment and decrement numbers
• Comparison operators
• Logical operators
• Return type of comparison and logical operators
• Use for loops
• Switch Expressions
• Switch Expressions and yield

8. Using Strings and Text Blocks

• Create an instance of the String class
• Test if two strings are equal
• Perform a case-insensitive equality test
• Contrast String, StringBuffer, and StringBuilder
• Compact Strings
• Text Blocks
• Unicode support

9. Fields and Variables

• Discuss Block Scoping Rules
• Distinguish between instance variables and method variables within a method
• Explain the difference between the terms field and variable
• List the default values for instance variables
• Final and Static fields and methods

10. Specializing in a Subclass

• Constructing a class that extends another class
• Implementing equals and toString
• Writing constructors that pass initialization data to parent constructor
• Using instanceof to verify type of an object reference
• Overriding subclass methods
• Pattern matching for instanceof
• Safely casting references to a more refined type

11. Using Arrays

• Declaring an array reference
• Allocating an array
• Initializing the entries in an array
• Writing methods with a variable number of arguments

12. Records

• Data objects in Java
• Introduce records as carrier of immutable data
• Defining records
• The Canonical constructor
• Compact constructors

13. Java Packages and Visibility

• Use the package keyword to define a class within a specific package
• Discuss levels of accessibility/visibility
• Using the import keyword to declare references to classes in a specific package
• Using the standard type naming conventions
• Introduce the Java Modular System
• Visibility in the Java Modular System

14. Utility Classes

• Introduce the wrapper classes
• Explain Autoboxing and Unboxing
• Converting String representations of primitive numbers into their primitive types
• Defining Enumerations
• Using static imports
• Introduce the Date/Time API
• LocalDate / LocalDateTime etc.
• Apply text formatting
• Using System.out.printf

15. Inheritance and Polymorphism

• Write a subclass with a method that overrides a method in the superclass
• Group objects by their common supertype
• Utilize polymorphism
• Cast a supertype reference to a valid subtype reference
• Use the final keyword on methods and classes to prevent overriding

16. Interfaces and Abstract Classes

• Define supertype contracts using abstract classes
• Implement concrete classes based on abstract classes
• Define supertype contracts using interfaces
• Implement concrete classes based on interfaces
• Explain advantage of interfaces over abstract classes
• Explain advantage of abstract classes over interfaces

17. Sealed Classes

• Introduce sealed classes
• The sealed and permits modifier
• Sealed interfaces
• Sealed classes and pattern matching

18. Pattern Matching

• Pattern Matching in switch statements
• Pattern Matching and sealed classes
• Record Patterns

19. Introduction to Exception Handling

• Introduce the Exception architecture
• Defining a try/catch blocks
• Checked vs Unchecked exceptions

20. Exceptions

• Defining your own application exceptions
• Automatic closure of resources
• Suppressed exceptions
• Handling multiple exceptions in one catch
• Enhanced try-with-resources
• Helpful NullPointerException(s)

21. Building Java Applications

• Explain the steps involved in building applications
• Define the build process
• Introduce build scripts
• Explain the standard folder layout
• Resolving project dependencies
• Tutorial: Importing code Using Maven

22. Introduction to Generics

• Generics and Subtyping
• Bounded Wildcards
• Generic Methods

23. Introducing Lambda Expressions and Functional Interfaces

• Understanding the concept of functional programming
• Understanding functional interfaces
• Lambda's and type inference

24. Collections

• Provide an overview of the Collection API
• Review the different collection implementations (Set, List and Queue)
• Explore how generics are used with collections
• Examine iterators for working with collections

25. Using Collections

• Collection Sorting
• Comparators
• Using the Right Collection
• Lambda expressions in Collections
• Sequenced Collections

Bonus Topics / Time Permitting

Streams

• Understanding the problem with collections in Java
• Thinking of program solutions in a declarative way
• Use the Stream API to process collections of data
• Understand the difference between intermediate and terminal stream operations
• Filtering elements from a Stream
• Finding element(s) within a Stream
• Collecting the elements from a Stream into a List

Collectors

• Using different ways to collect the items from a Stream
• Grouping elements within a stream
• Gathering statistics about numeric property of elements in a stream