Core Java

Expand + | - Contract ---------------------------------------------------------------------------

• Java Overview
  • Java Introduction
  • Java Architecture
  • Setting up environment for java
• Syntax and Grammar of java
  • Lexical Structure in java
  • Identifier
  • Keyword or reserved word
  • Comments
  • Java Literals
  • Primary / Primitive Data Types
    • Primary Datatypes in java
      • Integers
      • Characters
      • Floats
      • Booleans
    • Limits and size of primitive datatypes
  • Variables
    • How to declare and initialize variables?
    • What are default variable values?
  • Java source file format
  • Command-Line Parameters in java
  • Arrays
    • Arrays 
    • More on arrays
    • Finding an element in Sorted Array
    • Inserting an element in sorted array
    • Extending size of array in java
    • equals method in java
    • Iterating over arrays in java
  • Two dimensional arrays
    • 2D array declaration, allocation and initialization
    • Visualizing 2D arrays
    • Iterating over 2D arrays in java
    • Types of 2D arrays
    • Length of 2D array
  • Strings
• Operators in java
  • Introduction to Operators in java
  • Covering Operators one by one
  • Operator Precedence
• OOP in java
  • Encapsulation
  • Class in java
    • Field Values or Properties
    • Methods
    • Types of methods
    • Pass by value or reference
  • Object creation and destruction
  • Access Control in java
  • Nested classes
    • Nesting of classes : Introduction
    • Types of nested classes
      • Static member classes
      • Member classes
      • Local classes
      • Anonymous classes
    • Scope and inner ness of nested classes
    • How inner classes work in java?
  • Inheritance in java
    • Inheritance : cpp vs java
    • Using super in java
    • Multilevel inheritance : Calling order of Constructors
    • Abstract classes
    • Interfaces in java
    • Multiple inheritance in java
    • Inheritance among interfaces in java
    • Multiple inheritance in java
    • Abstract classes : cpp vs java
    • Abstract classes vs Interfaces
    • Abstract-Interface or skeletal implementations
    • Various interfaces Types
      • Abstract-Interface or skeletal implementations 
      • Constant Interfaces 
      • Marker Interfaces
    • Final in java: Preventing inheritance
  • Polymorphism in java
    • Array of base class objects
    • Casting and instanceof
• Control Flow in java
  • Conditional statement in java - if else statement and ? operator 
  • Switches in java 
  • Loops in java 
  • Continue, break and return
• Generics
  • Generics in java 
  • Motivation behind Generics-Dealing with casting of objects
  • The Generics Facility  
  • Creating a Generic class
  • Writing a Generic Method
  • Naming convention in generics
  • Generics are syntactic sugar - Type Erasure with Generics
  • Advantage of Generics
  • Subtyping a generic type
  • Wildcards in Generics
  • Generics classes in java vs templates in c++
  • Restrictions on wildcards in generics
  Some mistakes to be avoided with generics:
  • Beginner's mistake of using Object as type parameter to make method generic
  • Generic methods: How generic are generic method?
  • Wildcards in Generics 
  • Bounded parametric types 
  • Covariance, contravariance, invariance
  • Upper bound boundedness in generics
  • Lower bound boundedness in generics
  • Multiple bounds in generics
  • Get and Set principle in generics
  • Restrictions on wildcards in generics
  • Expressing dependencies in type parameters : Wildcards vs type parameters
  • Class objects as type literals
  • Generic types are not covariant
  • Type erasure in generics
  • Making return type of method as generic
  • Covariant parameter types