Java Programming 1 / Java Developer

Java is everywhere and is as popular as ever. This hands-on course, delivered using Java 17, endeavours to provide the fundamental skills you need to become a Java Developer. We'll have you build a series of realistic apps focusing on object-oriented principles from the start.

Note that this is not a beginners course. You are expected to be familiar with programming concepts and have a little coding experience. If not you should consider our Introduction to Programming - Java course instead.

Similarly, the course is targeted to closely follow the official Oracle Java curriculum for certification.

Exercises and examples are used throughout the course to give practical hands-on experience with the techniques covered.

Course Prerequisites

• • Delegates attending this course should be able to define general programming concepts including compilation and execution, variables, arrays, sequence, selection and iteration, navigate the filesystem (on the command line ideally), edit and save text files and browse the web. This knowledge can be obtained by attendance on the pre-requisite Introduction to Programming - Java course.
    

Course Objectives

• • Construct a Java app; perform basic IO
    Declare classes; instantiate and use objects
    Differentiate between primitives and references; exploit the standard data types
    Code decisions and loops
    Group data using ArrayList and HashMap
    Make the case for and code static fields and methods
    Manage numbers and perform computations using the Math and BigDecimal classes
    Process Strings and perform pattern matching
    Manage exceptions
    Hide an object's data and its internal workings
    Build objects that are composed of others
    Build objects that inherit state/behaviour from others
    Build flexible and scalable apps by exploiting abstraction and polymorphism
    Read from and write to files and databases
    Build a standalone executable from one or more modules

Target Audience for this Course

• • The Java Programming 1 / Java Developer course is aimed at anyone with a little coding experience seeking to become a Java Developer, and existing developers seeking to migrate to Java.
    

Included with this course

• • Comprehensive course materials and exercises

Java Programming 1 / Java Developer Course Content

• DAY 1

  Session 1: PLATFORM, APP STRUCTURE, & BASIC IO
  The Java language
  The Java platform
  App structure incl. modules, packages, and classes (brief)
  The main method
  Reading from stdin and writing to stdout
  Reading from and writing to a text file
  Compilation and execution
  Session 2: CLASSES & OBJECTS
  What is an object
  What is a class
  Object-oriented apps
  Classes
  Fields
  Constructors
  Methods
  Objects
  Instantiation
  Getting and setting fields
  Calling methods
  Session 3: VARIABLES & STANDARD DATA TYPES
  Instance fields
  Default values
  Local variables incl. parameters
  Primitives
  Literals
  Default types
  Casting
  References
  Arrays (brief)
  Strings (brief)
  Primitive wrappers
  Constants
  Type inference
  Varargs
  Naming conventions

• DAY 2

  Session 4: DECISIONS & LOOPS
  Relational and conditional operators
  If statements
  Switch statements
  The ternary operator
  While loops
  For loops (both kind)
  Branching statements (break, continue, return)
  Session 5: ESSENTIAL COLLECTIONS
  What is an array
  List vs. array
  Map vs. list
  Generic classes (brief)
  Arrays
  Declaration and initialisation
  Setting and getting elements
  Sizing
  Iterating
  Multi-dimensional arrays
  Command line arguments
  The ArrayList and HashMap classes
  Imports
  Adding elements incl. autoboxing
  Membership testing
  Accessing elements
  Changing elements
  Removing elements
  Sizing
  Iterating
  Session 6: STATIC MEMBERS & ENUMS
  What does it mean to be static
  Static fields
  Static methods
  Static context
  Static imports
  Enums
  Session 7: NUMBERS & MATHS
  Strings to numbers
  Arithmetic and unary operators
  The Math class
  The BigDecimal class
  Number formatting
  

• DAY 3

  Session 8: STRINGS & REGEX
  What is a String
  Immutable objects
  The String Pool
  Strings
  Creation
  Escape characters
  Concatenation
  Format Strings
  Length
  Transformative methods
  Search methods
  Comparative methods
  Java 11 methods
  StringBuilder
  Pattern matching
  Regular expressions
  The Pattern and Matcher classes
  Session 9: EXCEPTION HANDLING
  What is an exception
  Checked vs. unchecked exceptions
  Exceptions and the call stack
  Try, catch, and finally
  Handling multiple exception types
  Try with resources
  Throwing exceptions
  Custom exceptions (brief)
  Session 10: ENCAPSULATION
  What is encapsulation
  Access modifiers
  Private fields and public methods
  Getters and setters
  Constructors (for controlling instantiation)
  The this keyword

• DAY 4

  Session 11: COMPOSITION & AGGREGATION
  What is composition
  What is aggregation
  Composite associations
  Aggregate associations
  Constructor injection (mandatory)
  Setter injection (optional)
  The problem with getter methods (refs. vs. copies)
  Session 12: INHERITANCE, ABSTRACTION, & POLYMORPHISM
  What is inheritance
  The purpose of inheritance
  Extending a superclass
  Shadowing
  Overriding
  Subclass constructors
  The super keyword
  Inheritance polymorphism
  Upcasting and downcasting
  The instanceof operator
  Final classes and methods
  The Object class incl. toString, hashCode, and equals (brief)
  What is abstraction
  The purpose of abstraction
  Abstract classes and methods
  Extending an abstract class
  Interfaces
  Implementing one or more interfaces
  Extending and implementing
  Interface polymorphism
  Interface default, static, and private methods

• DAY 5

  Session 13: MODERN FILE IO
  What is a stream
  The different types of stream
  The Path class
  Reading all bytes/lines from a file
  Writing all bytes/lines to a file
  Reading from a file using a buffered stream
  Writing to a file using a buffered stream
  Parsing a file using a Scanner
  Session 14: MODULES
  What is a module
  Module descriptor
  Module requires and exports
  Compiling a module
  Using jdeps to determine a module's dependencies
  Compiling a module that requires other modules
  Executing a module
  Using jlink to build a custom JRE
  Session 15: BASIC JDBC
  What is JDBC
  Loading the driver
  Establishing a connection
  AutoCommit
  Transaction management
  Creating a statement
  PreparedStatement
  CallableStatementt
  Batch updates
  Executing a query/update
  Processing a ResultSet
  Type
  Concurrency
  Holdability
  Closing resources