Course
Oracle Certified Professional: Java SE 21 Developer (1Z0-830)
Chapter 01
Date, Time, Text, Numeric, and Boolean Values
Chapter 02
Controlling Program Flow
Chapter 03
Object-Oriented Concepts in Java
Chapter 04
Handling Exceptions
Chapter 05
Arrays and Collections
Chapter 06
Streams and Lambda Expressions
Chapter 07
Packaging and Deploying Java Code
Chapter 08
Managing Concurrent Code Execution
Chapter 09
Java I/O API
Chapter 10
Implementing Localization