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
    • Declaring array
    • Defining or Allocating array
    • Array Initialization
    • Anonymous Arrays in java
    • Getting the size of the array in java
    • Changing the size of the array
    • Iterating over array elements in java
    • Arrays of length 0
    • How arrays are stored in java?
    • Managing subscript in arrays in java
    • Command line parameters
    • Arrays and exceptions in java
    • Copying arrays in java
    • Sorting an array in java
    • equals() on array in java
    • Finding an element in a sorted array
    • More on arrays in java
  • Two dimensional arrays
    • 2D array declaration, allocation and initialization
    • Visualizing 2D arrays
    • Iterating over 2D arrays in java
    • Common usage of ragged arrays
    • Naming convention : Use named constants for array sizes
  •     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