Java Programming Level 1: Introduction for Programmers

1 Getting Started 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 2 Learning the Basics 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 3 Object-Oriented Programming 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 4 Collections, Lists and Java's Built-In APIs 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 5 Exceptions 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? 6 Libraries, Packages, and Modules 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 7 Sockets, Files, and Streams 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