Java SE 11 Developer (1Z0-819)
Complete preparation (18+hrs) for the oracle java 1z0-819 java 11 SE deecloper examination. From the ground up.
by Simon Roberts, January 2022
Compressed version, around 1 GB only (down from 4+gb).
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Module 1: Working with Java data types
Lesson 1: Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
Lesson 2: Handle text using String and StringBuilder classes
Lesson 3: Use local variable type inference, including as lambda parameters
Module 2: Controlling Program Flow and Exception Handling
Lesson 4: Create and use loops, if/else, and switch statements
Lesson 5: Handle exceptions using try/catch/finally clauses, try-with-resource, and multi-catch statements
Lesson 6: Create and use custom exceptions
Module 3: Java Object-Oriented Approach
Lesson 7: Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles
Lesson 8: Define and use fields and methods, including instance, static and overloaded methods
Lesson 9: Initialize objects and their members using instance and static initialiser statements and constructors
Lesson 10: Understand variable scopes, apply encapsulation and make objects immutablee
Lesson 11: Create and use subclasses and superclasses, including abstract classes
Lesson 12: Utilize polymorphism and casting to call methods, differentiate object type versus reference type
Lesson 13: Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
Lesson 14: Create and use enumerations
Module 4: Working with Arrays and Collections
Lesson 15: Use generics, including wildcards
Lesson 16: Use a Java array and List, Set, Map and Deque collections, including convenience methods
Lesson 17: Sort collections and arrays using Comparator and Comparable interfaces
Module 5: Working with Streams and Lambda Expressions
Lesson 18: Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
Lesson 19: Use Java Streams to filter, transform and process data
Lesson 20: Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
Module 6: Java Platform Module System
Lesson 21: Deploy and execute modular applications, including automatic modules
Lesson 22: Declare, use, and expose modules, including the use of services
Module 7: Concurrency
Lesson 23: Create worker threads and manage concurrency
Lesson 24: Develop thread-safe code, using different locking mechanisms and java.util.concurrent API
Module 8: Database Applications with JDBC, and Java IO
Lesson 25: Connect to and perform database SQL operations, process query results using JDBC API
Lesson 26: Read and write console and file data using I/O Streams
Lesson 27: Implement serialization and deserialization techniques on Java objects
Lesson 28: Handle file system objects using java.nio.file API
Module 9: Annotations, Localization, and Secure Coding in Java SE Application
Lesson 29: Create, Apply, and Process Annotations
Lesson 30: Implement Localization and use Java APIs for parsing and formatting
Lesson 31: Develop code that mitigates security threats, and ensure data integrity 
Lesson 32: Secure resource access, manage policies and execute privileged code
