Importance of Computer in Education - tccicomputercoaching.com

Importance of Computer in Education - tccicomputercoaching.com

What is Computer Education?

Computer is a machine that is used to solve a problem. Today computer is used everywhere.

Computer Education is the process of learning or teaching about the computer.

Education has benefited from the inclusion of technology and computers by making it easier for students to keep up while helping teachers by improving the way lessons can be planned and taught. Computers have revolutionized the way we live and work. There is hardly any field in which computers do not play a very significant role. Education too has grown beyond learning from textbooks. Students who use computers learn to use word processors for work, and subsequently they learn computer jargon and strengthen grammatical skills. Students can also look up lessons on websites or through email rather than lugging heavy textbooks with them every day.

Computer improves Student Performance.

Students who use computers have been shown to attend school more steadily. Computers play a vital role in the modern business world, and many of even the most basic jobs involve technology and computers. Computers make the learning process a lot more simple and efficient, giving student’s access to tools and methods of communication unavailable offline.

We can say that Computers can be very effective teacher. Having a computer as a teacher means, the student can learn at his or her own pace. The computer will never tire of teaching the subject repeatedly until the student is completely clear of all his doubts. The computer can be tailored to suit the requirements of the students.

Computer Empower the students with source of information.

The computer used to access the internet, which is arguably the most extensive library in the world. With the internet, the students’ curiosity can be kindled to explore the unknown.

Computers and the internet can help the teachers and institutions in reaching more students. Every school or college is limited to a finite number of students that can be accommodated in a classroom. However, with the use of computers, literally, the entire world is a classroom.

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What is Inner Class in Java? - tccicomputercoaching.com

What is Inner Class in Java? - tccicomputercoaching.com

Java Inner Class or nested class is a class i.e. declared inside the class or interface.

Inner class is like same as regular member of class.
 
We use inner classes to logically group classes and interfaces in one place so that it can be more readable and maintainable.
 
Additionally, it can access all the members of outer class including private data members and methods.

Why we need inner class?

There are so many advantages of inner class as follows:

Advantage of java inner classes

There are basically three advantages of inner classes in java. They are as follows:
 
1) Nested classes represent a special type of relationship that is it can access all the members (data members and methods) of outer class including private.
 
2) Nested classes are used to develop more readable and maintainable code because it logically group classes and interfaces in one place only.
 
3) Code Optimization: It requires less code to write.

4) Inner class can be private, protected and public any access moditier but outer class never private or protected.

5. Inner class can also be static, final, or abstract.

Real Example:

Car can move, start and stop, wo, we can create class car and describe behaviour in different functions like move (), start () and stop ().

These start and stop is specially related to engine so, we can use inner class engine and these related functions put together into the engine. Such a way we encapsulate behaviour of inner class. We can also describe property horse power of engine.

class car{

void move()
{
}

class Engine
{
int hp;

void start()
{
}

void stop()
{
}
}

There are 3 types:

1. Java Member inner class

A non-static class that is created inside a class but outside a method is called member inner class.

2. Method inner class

Here, inner class is defined inside the method. So, scope of class is only restricted to that method.

3. Anonymous Inner Class

An inner class declared without a class name is known as an anonymous inner class.

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Constructor in Python - tccicomputercoaching.com

Constructor in Python - tccicomputercoaching.com

A constructor is a special type of method (function) which is used to initialize the instance members of the class. Constructor can be parameterized and non-parameterized as well. Constructor definition executes when we create object of the class. Constructors also verify that there are enough resources for the object to perform any start-up task.

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What is JSF? tccicompuercoaching.com

What is JSF? tccicomputercoaching.com

Java Server Faces (JSF) is a Java-based web application framework intended to simplify development integration of web-based user interfaces.

Java Server Faces is a standardized display technology, which was formalized in a specification through the Java Community Process.

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What is Java Socket Programming? tccicomputercoaching.com

What is the Basic Networking Terminology? tccicomputercoaching.com

What is Java Socket Programming? tccicomputercoaching.com

The java.net.Socket class represents a socket, and the java.net.ServerSocket class provides a mechanism for the server program to listen for clients and establish connections with them.

Java Socket programming is used for communication between the applications running on different JRE.

Java Socket programming can be connection-oriented or connection-less.

Socket and ServerSocket classes are used for connection-oriented socket programming and DatagramSocket and DatagramPacket classes are used for connection-less socket programming.

Clientside Programming:

The client in socket programming must know two information:

1. IP Address of Server, and
2. Port number.

A socket is simply an endpoint for communications between the machines. The Socket class can be used to create a socket.

public InputStream getInputStream() , public OutputStream getOutputStream(),public synchronized void close() are important methods in clientside programming.

Serverside Programming:

public Socket accept(),2) public synchronized void close() are important methods in serverside Programming.

The ServerSocket class can be used to create a server socket. This object is used to establish communication with the clients.

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What is the Basic Networking Terminology? tccicomputercoaching.com

Computers running on the Internet communicate to each other using either the Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP).

The widely used networking terminologies are given below:

1) IP Address

IP address is a unique number assigned to a node of a network e.g. 192.168.0.1 . It is composed of octets that range from 0 to 255.
It is a logical address that can be changed.

2) Protocol

A protocol is a set of rules basically that is followed for communication. For example:

• TCP
• FTP
• Telnet
• SMTP
• POP etc.

3) Port Number

The port number is used to uniquely identify different applications . It acts as a communication endpoint between applications.

The port number is associated with the IP address for communication between two applications.
The TCP and UDP protocols use ports to map incoming data to a particular process running on a computer.

4) MAC Address

MAC (Media Access Control) Address is a unique identifier of NIC (Network Interface Controller). A network node can have multiple NIC but each with unique MAC.

5) TCP-UDP: Connection-oriented and connection-less protocol

In connection-oriented protocol, acknowledgement is sent by the receiver. So it is reliable but slow. The example of connection-oriented protocol is TCP.

But, in connection-less protocol, acknowledgement is not sent by the receiver. So it is not reliable but fast. The example of connection-less protocol is UDP.

6) Socket

A socket is an endpoint between two way communication.

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