Learning Plan

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Java programming language manufacturing purpose:

• Developing applications with high fluctuating loads in nature that will be deployed later on backend servers

• Mobile applications development

• Developing windows desktop applications

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Open lessons by order, then check the added links to start on.

Check the references section to get more information about the required topics.

Happy learning 😉

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Lessons:

• Lesson 1

  • Overview

• Lesson 2

  • Data types
  • Variables

• Lesson 3

  • Operators
    • Assignment: =
    • Arithmetic: +, -, *, /, %
    • Comparison: ==, !=, >, >=, <, <=
    • Logical: &&, ||
    • Unary operators: ++, --
    • Operators precedence

• Lesson 4

  • Flow of control
    • Conditionals
      • if
      • switch
    • Loops
      • while
      • for
      • break and continue

• Lesson 5

  • Arrays
    • 1 dimensional array
      • how to declare it
      • how to initialize it
      • how to loop through it

• Lesson 6

  • Functions
    • Types: void and non-void
    • Parameters and arguments
    • What is the return keyword?

• Lesson 7

  • What is a class?
    • represents a type
    • a template for creating an object
    • class members: {fields, constructor, functions}
    • has 2 types as concrete class and abstract class
  • What is an object?
    • called an instance from a concrete class

• Lesson 8

  • Object oriented programming AKA modeling real world problems into mental models which will be translated later into Java code
    • Concepts:
      • Abstraction,
      • Inheritance,
        • Overloading and overriding functions
      • Encapsulation
        • Access modifiers: {public, private, protected}
        • Class members: fields and functions
        • Getters and setters
  • Class diagram
  • Class name (noun) vs. function name (verb)

• Lesson 9

  • Collections (Implemented data structures in Java)
    • Types to focus on:
      • List implemented as an ArrayList
      • Set implemented as a HashSet
      • Associative array implemented as a HashMap
    • How to make each element unique in a collection using its identifier (id field)?
      • Add the identifier into equals() and hashcode()

• Lesson 10

  • Exceptions handling

• Lesson 11

  • Generics

• Lesson 12

  • Packages

• Lesson 13

  • Enums

• Lesson 14

  • File handling:
    • How to create file?
    • How to delete a file?
    • How to read a file?
    • How to write to a file?

• Lesson 15

  • Comments
  • Reserved keywords

• Lesson 16

  • Memory management
    • What is the GC?
    • What is the stack?
    • What is the heap?

• Lesson 17

  • List of unicode characters
  • What is an annotation?

• Lesson 18

  • Why we need to use main method/function to run the application ?
    • Java section => Just ignore others and focus on Java one while reading but don't skip the introduction to understand more details regarding the application's entry point
    • Example in action

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