Outline

• Background

  • What is Object Oriented Programming?

  • JVM

  • Java Version History

  • Java Memory Model

    • Stack, Heap

    • Garbage Collector

    • Reference and Value Types

    • Pass By Value

• Java Core

  • Basic Class & main method

  • Variables

    • Primitives

    • Strings, Arrays

  • Operators

  • Expressions, Statements & Blocks

  • Control Flow

    • Conditionals

      • if, if-else

      • switch

      • ternary

    • Loops

      • for

      • for-each

      • do-while

      • while

      • break, continue

  • Classes Part 1

    • Class

    • Member variables

    • Initialization blocks

    • Methods

      • Varargs

      • Overloading

    • Constructors

  • Objects

    • Creating objects

    • Using objects

  • Static

    • Static variables

    • Static methods

    • Static classes

  • Classes Part 2

    • this keyword

    • packages

    • access modifiers

    • initializing fields

  • Nested Classes

    • Inner Classes

    • Local Classes

    • Anonymous Classes

  • Lambdas

    • Expressions

    • Method References

  • Enums

  • Annotations

    • Basics

    • Declaring annotation type

    • Predefined Annotation types

    • Repeating annotations

  • Interfaces & Inheritance

    • Interfaces

      • Defining

      • Implementing

      • Using Interface as a type

      • Default methods

    • Inheritance

      • Overriding & Hiding

      • Polymorphism

      • Hiding fields

      • super keyword

      • Object as a superclass

      • Final classes & methods

      • Abstract methods & classes

  • Numbers & Strings

    • Numbers

      • Numbers Classes

      • Formatting number output

      • java.lang.Math.*

      • Casting

      • Autoboxing and Unboxing

    • Characters

    • Strings

      • Converting from numbers to Strings

      • Manipulating characters

      • Comparing Strings and Sub-strings

      • StringBuilder

  • Generics

    • Why Generics?

    • Generic Types & Raw Types

    • Generic Methods

    • Bounded Type Parameters

    • Generics, Inheritance & Subtypes

    • Type Inferences

    • Wildcards

    • Type Erasure

    • Restrictions

  • Collections

    • Collection Types

      • List

      • Queue

      • Set

      • Map

      • Arrays

    • Ordering & Sorting

    • Comparisons

    • Iterating

    • Utilities

  • Exceptions

    • Heirarchy

    • Checked & Unchecked Exceptions

    • Handling Exceptions

      • try-catch-finally

      • try-with

    • Custom Exceptions

  • Lambdas & Streams

  • IO

  • Threading

  • Reflection

  • Design Patterns

  • Data Structures & Algorithms

  • Testing

  • Build & Configuration

  • Spring