Java Programming Level 1: Introduction for Programmers

Course Overview

1 Getting Started

• Introduction
• Writing, Compiling, and Executing Your Hello World Program
• Exercise 1: Creating Your Hello World Program in Java
• Basic Syntax and Naming Conventions
• Printing Out Different Data Types
• Variables and Variable Types
• Exercise 2: Printing Different Types of Data
• Primitive versus Reference Data Types
• Null
• Chars and Strings
• Exercise 3: Declaring Strings
• Doing Some Math
• Exercise 4: Solving a Simple Trigonometry Problem
• Comments Help You to Share Code
• CLI versus GUI
• Exercise 5: Running the Code from the CLI
• Activity 1: Obtaining the Minimum of Two Numbers
• Summary

2 Learning the Basics

• Introduction
• Controlling the Flow of Your Programs
• Exercise 1: Creating a Basic if Statement
• Comparison Operators
• Exercise 2: Using Java Comparison Operators
• Nested if Statements
• Exercise 3: Implementing a Nested if Statement
• Branching Two Ways with if and else
• Exercise 4: Using if and else Statements
• Using Complex Conditionals
• Exercise 5: Using Logical Operators to Create Complex Conditionals
• Using Arithmetic Operators in an if Condition
• The Ternary Operator
• Exercise 6: Using the Ternary Operator
• Equality Can Be Tricky
• Exercise 7: Comparing Decimal Values
• Comparing Strings
• Using switch Statements
• Exercise 8: Using switch
• Exercise 9: Allowing Cases to Fall Through
• Using Java 12 Enhanced switch Statements
• Exercise 10: Using Java 12 switch Statements
• Looping and Performing Repetitive Tasks
• Looping with the for Loop
• Exercise 11: Using a Classic for Loop
• Exercise 12: Using an Enhanced for Loop
• Jumping Out of Loops with Break and Continue
• Exercise 13: Using break and continue
• Using the while Loop
• Exercise 14: Using a while Loop
• Using the do-while Loop
• Handling Command-Line Arguments
• Exercise 15: Testing Command-Line Arguments
• Converting Command-Line Arguments
• Exercise 16: Converting String to Integers and Doubles
• Diving Deeper into Variables — Immutability
• Comparing Final and Immutable
• Using Static Values
• Using Local Variable Type Inference
• Activity 1: Taking Input and Comparing Ranges
• Summary

3 Object-Oriented Programming

• Introduction
• The Anatomy of a Class
• Working with Objects in Java
• Checking the Precedence of a Class with instanceof
• Exercise 1: Creating the WordTool Class
• Activity 1: Adding the Frequency-of-Symbol Calculation to WordToo
• Inheritance in Java
• Overriding and Hiding Methods
• Avoiding Overriding: Final Classes and Methods
• Overloading Methods and Constructors
• Recursion
• Annotations
• Interfaces
• Inner Classes
• Documenting with JavaDoc
• Activity 2: Adding Documentation to WordTool
• Summary

4 Collections, Lists and Java's Built-In APIs

• Introduction
• Arrays
• Activity 1: Searching for Multiple Occurrences in an Array
• Sets
• Lists
• Exercise 1: Creating the AnalyzeInputApplication
• Maps
• Iterating through Collections
• Exercise 2: Bringing Analytics into the AnalyzeInput Application
• Sorting Collections
• Exercise 3: Sort the Results from the AnalyzeInput Application
• Properties
• Activity 2: Iterating through Large Lists
• Summary

5 Exceptions

• Introduction
• A Simple Exception Example
• NullPointerException – Have No Fear
• Catching Exceptions
• Exercise 1: Logging Exceptions
• Throws and Throw
• Exercise 2: Breaking the Law (and Fixing It)
• The finally Block
• Activity 1: Designing an Exception Class LoggingData
• Best Practices for Handling Exceptions
• Where Do Exceptions Come from?
• Summary

6 Libraries, Packages, and Modules

• Introduction
• Organizing Code into Packages
• Importing Classes
• Exercise 1: Importing Classes
• Fully Qualified Class Names
• Importing All Classes in a Package
• Dealing with Duplicated Names
• Static Imports
• Creating a Package
• Naming Your Package
• Directories and Packages
• Exercise 2: Creating a Package for a Fitness Tracking App
• Building JAR Files
• Exercise 3: Building a JAR File
• Defining the Manifest
• Exercise 4: Building an Executable JAR File
• Build Tools
• Maven
• Exercise 5: Creating a Maven Project
• Exercise 6: Adding Java Sources to the Maven Project
• Exercise 7: Building the Maven Project
• Exercise 8: Creating an Executable JAR with Maven
• Using Gradle
• Exercise 9: Creating a Gradle Project
• Exercise 10: Building an Executable JAR with Gradle
• Using Third-Party Libraries
• Finding the Libraries
• Adding a Project Dependency
• Exercise 11: Adding a Third-Party Library Dependency
• Using the Apache Commons Lang Library
• Exercise 8: Creating an Executable JAR with Maven
• Using Gradle
• Exercise 9: Creating a Gradle Project
• Exercise 10: Building an Executable JAR with Gradle
• Using Third-Party Libraries
• Finding the Libraries
• Adding a Project Dependency
• Exercise 11: Adding a Third-Party Library Dependency
• Using the Apache Commons Lang Library Library
• Using Modules
• Creating Modules
• Exercise 13: Creating a Project for a Module
• Exercise 14: Creating a Second Module Using the First One
• Activity 1: Tracking Summer High Temperatures
• Summary

7 Sockets, Files, and Streams

• Introduction
• Listing Files and Directories
• Separating Directories from Files
• Exercise 1: Listing theContents of Subdirectories
• Creating and Writing to a File
• Activity 1: Writing the Directory Structure to a File
• Reading an Existing File
• Reading a Properties File
• Exercise 2: Creating a Properties File from the CLI
• What are Streams?
• The Different Streams of the Java Language
• What are Sockets?
• Creating a SocketServer
• Writing Data on and Reading Data from aSocket
• Activity 2: Improving the EchoServer and EchoClient Programs
• Blocking and Non-Blocking Calls
• Summary

Prerequisites

This course is specially designed for individuals with prior programming background. You should also have a working knowledge of Object Oriented Programming concepts.

If you have no prior programming experience or are not familiar with Object Oriented Programming, you should consider "Java Programming Level 1: Introduction for Non-Programmers" course instead.