Java Programming 1 / Java Developer

Course Introduction

• Administration and Course Materials
• Course Structure and Agenda
• Delegate and Trainer Introductions

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

Session 4: DECISIONS & LOOPS

• Relational and conditional operators
• If statements
• Switch statements
• Switch expressions
• 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

Session 8: STRINGS & REGEX

• What is a String
• Immutable objects
• The String Pool
• Strings
  • Creation
  • Escape characters
  • Concatenation
  • Text blocks
  • 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
• Records

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
• Sealed classes
• 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

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