Understanding Requirement: Why Java
Why Java is important to the Internet
Java On Linux
First Java Program
Java Virtual Machine Architecture
Class Loading Process by Class Loaders
Role Of Just In Time Compiler
Execution Engine
Data Types
Variables
Arrays
Operators
Arithmetic Operations
Shifting Operators
Logical Operators
Control Statements
Object Oriented Paradigms
The Three OOP principles
Looping Statements
JAVA Class Fundamentals
Command Line Arguments
Static Initialize
Creating an Object
Instance Variable Hiding
Overriding and Overloading of methods
Understanding The Access Controls
Nested And Inner Classes
Dynamic Method Dispatching
Abstract Classes
Using Final To Prevent Overriding & Inheritance
Garbage Collection
Defining a package
Understanding Classpath
Access Protection
Importing packages
Defining and Implementing An Interface
Abstract classes vs Interfaces
Generics
Annotations
Varargs
Foreach
Fundamentals Of Exception Handling
Types Of Exceptions
Learning exception handling, try-catch, multiple catch clauses
Nested Try Statements
Throw, Throws and Finally
Custom Exceptions
Java Thread Model
Creating A Thread
Context Switching
Synchronization: Methods And Statements
Inter-thread Communication
Since JDK 5, Java introduced new feature which simplifies the creation of methods that need to take a variable number of arguments. It is called varargs which is short-form for variable-length arguments. A method which takes a variable number of arguments is a varargs method.
A varargs is specified by three dots(…). See an example below:
A method together with varargs parameters can have other parameters as well, but there must exists only one varargs parameter that should be the last parameter in the method declaration.
Points to remember:
It is possible to overload varargs method but it may lead to ambiguity.
Before to JDK 5, varargs could be handled into two ways: One was using overloading, other was using array argument.
Method can have only one variable argument
Varargs must be the last argument.
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