Overview
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Learn the fundamentals of Java Standard Edition (SE) 11 and more recent releases, so you can build your first application or start exploring the language on your own.
Syllabus
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Introduction
- What kind of software can you create?
- What you need to know
- Explore the history of Java
- Principles and components of Java
- Explore basic Java syntax
- Memory management and garbage collection
- Choose a development environment
- Install the JDK on Windows
- Install the JDK on macOS
- Install and configure IntelliJ IDEA
- Test simple Java code in JShell
- Compile Java code to bytecode
- Pass arguments to a console application
- Use the Java API documentation
- Work with primitive variables
- Declare and modify primitive values
- Declare and initialize object variables
- Manage currency values with BigDecimal
- Convert values between numeric types
- Math operators and the Math class
- Manage true and false Boolean values
- Manage character values as primitives
- More about Java operators
- Declare and initialize string values
- Build a string from multiple values
- Clone the exercise files from GitHub
- Convert primitive values to strings
- Format numeric values as strings
- Interpolate strings with placeholders
- Compare string values
- Parse string values
- Get string values from user input
- Challenge: A simple calculator
- Solution: A simple calculator
- Evaluate conditions with if-else
- Evaluate conditions with switch-case
- Create looping code blocks
- Create reusable code with methods
- Create overloaded methods
- Pass arguments by reference vs. value
- Debug with IntelliJ IDEA
- Handle exceptions with try/catch
- Create multiple catch blocks
- Close objects with try-with-resources
- Challenge: A more complex calculator
- Solution: A more complex calculator
- Declare and use custom classes
- Organize code with packages
- Create instance fields and methods
- Declare multiple constructor methods
- Use static fields as constants
- Declare and use Enum types
- About inheritance
- Extend classes and override methods
- Use objects as their super types
- Store values in simple arrays
- Manage resizable arrays with Lists
- Manage key-value pairs with Maps
- Next steps
