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Java Developer

About the Course

Course Duration: 5 days

Price: £1695

Private Course: Click Here

Java is everywhere and is as popular as ever. This hands-on course, delivered using Java 11, 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’re expected to be familiar with programming concepts and have a little coding experience. If not you should consider our Learn to Code with Java course instead.

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

The delegate will learn and acquire skills as follows:

  • 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

Who will the course benefit?

  • The 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.

Entry Requirements

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 course.

Pre-requisite Courses

  • Introduction to Programming

Follow-on Courses

  • Java Programming 2
  • Unit Testing using JUnit
  • Java Web Services


  • Course technical content is subject to change without notice.
  • Course content is structured as sessions, this does not strictly map to course timings. Concepts, content and practicals often span sessions.


Whilst not strictly aligned to it, this course is a good choice for anyone intending to take Oracle’s Java SE 11 Programmer I exam. All of the headline exam topics are covered though additional preparation is likely to be required.


Course Objectives

This course aims to provide the delegate with the skills needed to build object-oriented apps using Java that exploit all of the fundamental elements of the language.

Syllabus – Key points

Course Content day 1

Course Introduction

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


  • 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


  • What is an object
  • What is a class
  • Object-oriented apps
  • Classes
    • Fields
    • Constructors
    • Methods
  • Objects
    • Instantiation
    • Getting and setting fields
    • Calling methods


  • 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

Course Contents – DAY 2


  • Relational and conditional operators
  • If statements
  • Switch statements
  • The ternary operator
  • While loops
  • For loops (both kind)
  • Branching statements (break, continue, return)


  • 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


  • 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

Course Contents – 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


  • 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

Course Contents – DAY 4


  • What is composition
  • What is aggregation
  • Composite associations
  • Aggregate associations
  • Constructor injection (mandatory)
  • Setter injection (optional)
  • The problem with getter methods (refs. vs. copies)


  • 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

Course Contents – 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



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