Why local variable is preferred over global variable, Why Local variable is...

Why Local variable is preferred over Global variable ? In my point of view Global variable has a few advantage along with Local variables is preferred because of the subsequent

Taking in command line arguments, Taking in Command Line Arguments In J...

Taking in Command Line Arguments In Java, the program can be written to accept command-line-arguments. Example Code:  command-line arguments /*  This

What are different parts of autowire types, There are four different parts ...

There are four different parts by which autowiring can be done. ? byName ? constructor ? autodetect ? byType

Calculate Bill program, Notice that each row now has the type of customer a...

Notice that each row now has the type of customer and the additional data needed. calculateBill remains the same in Customer.  However, the calculateBill in Corporate will add a

Why do we need wrapper classes, Why do we need wrapper classes? It is s...

Why do we need wrapper classes? It is sometimes simpler to deal with primitives as objects. Moreover most of the collection classes keep objects and not primitive data types. A

Why hub is used in networks, Why hub is used in networks? Hub is networ...

Why hub is used in networks? Hub is networking equipment and a device that connects various computers to form a network. In a network the NIC translates the message within elec

What does the abstract keyword mean in front of a method, What does the " a...

What does the " abstract " keyword mean in front of a method and a class ?

Inheritance and interfaces to construct type hierarchies, Objectives 1. To...

Objectives 1. To help you become comfortable with using inheritance and interfaces to construct type hierarchies. 2. To familiarize you with programming from specifications. A

Example of class diagram,