Advanced Java Tutorial- A Complete Guide In 4 Points

Introduction to Java Tutorial

A simple meaning of advance is improvement or development or moving forward so in the same context everything that goes beyond core java is advanced java.  The major difference between core java and advanced java is core java is used for developing or creating a general-purpose application advanced java specifically deals with online application like mobile and website application.

1. Introduction to advanced java
2. What is JDBC?
3. Introductions to java servlets
4. Introduction to JSP 

1. Introduction to advanced java

It is part of the Java programing language. It mainly includes Application programming interface (API) like Servlet Programming, Web services, and persistent API and other concepts like java server pages(JSP), java database connectivity  (JDBC), remote method invocation (RMI), socket programming, etc. Advanced Java is specifically designed to develop network-centric, web-based, or enterprise applications, or we can say it is specialization in a specific domain. Client and server architecture i.e. two-tier architecture is used in developing applications using advanced java. Hence applications that run on the server can be considered advanced java applications.

2. What is JDBC?

JDBC is an acronym used for Java Database Connectivity. It is an important concept of advanced java. The application programming interface for independent database connectivity between a broad scope of databases and java programing language is called JDBC. It enables users to approach request statements in a structured query language (SQL) which is later passed to manage databases. It generally entails opening a connection, generating a SQL database, carry out  SQL queries, and then reaching the output. Users can update, delete, save and, fetch data from databases with the help of JDBC.

• JDBC Architecture

Both two-tier and three-tier  processing models for databases  are supported by JDBC API but architecture if JDBC consisted of two layers 

1. JDBC API: This allows  the application-to-JDBC Manager connection 
2. JDBC Driver API: This allows the JDBC Manager-to-Driver Connection

• Components of JDBC

1. Driver: An interface that holds communication between database servers is called a driver.
2. Connection: It is an interface that comprises techniques that needs to connect a database.
3. Driver Manager: It is used to manage a list of database drivers

• Steps to create JDBC Application 

1. Import the packages: For the database programming user has to include packages containing JDBC classes.
2.  JDBC driver register: Here to unrolled a communication channel with the database you have to initialize a driver.
3. Open a connection: To create a Connection object one can use the get connection method  which shows  a physical connection with the database 
4. Execute a query:  Requires using an object of type Statement for making and to put forward an SQL statement to the database. 
5. Extract data:  To retrieve the data from the result set. It requires using the appropriate get xxx() method 
6.  Environment cleanup: Needs explicitly closing all database methods versus relying on the java virtual machine’s (JVM) garbage collection.

3. Introductions to java servlets

Servlet is a  language class of java programming. It is helpful to expand the capacity of servers that provide applications retrieved by means of a request-response programming model. In other words, it is a server-side technology in the java platform that answers a coming request from a browser client with a response. Although it responds to some type of request, it is commonly helpful to expand the applications provided by web servers. Key features of servlets can be described as follows

• It is technology Used to create web applications.
• It is an interface that must be implemented for creating a servlet.
•  Servlet is an API that provides many classes and interfaces including documentation.
• It is also a class that extends the abilities of the servers and responds to incoming requests from a browser client. It can respond to any requests.  

4. Introduction to JSP 

Java Server Pages (JSP) is like servlet technology that is used to create a web application. JSP provides more functionality than servlet such as expression language, JST, etc, and hence it also refers to as an extension to servlets. JSP consists of two tags HTML and JSP. It is easier to maintain JSP pages as we can separate designing and development. Some additional features like expression language, custom tags are also provided by JSP. Key features of JSP are as follows 

• Fast development: We don’t need to recompile the project if JSP is modified.
• Portable: As JSP tags process and execute by server-side web container it is J2EE server independent and browser-independent.
• Easy:  It is easy to acknowledge, learn and develop. As they permit you to implant  Java code straight into your HTML pages these become more convenient to write than servlets.
• Powerful: It consists of bytecode so that all Java features are applicable in the case of JSP like robust, dynamic, secure, platform-independent. 
• Flexible: JSP’s are flexible because it allows defining custom tags so that the developer can fill conferrable to use any kind, framework based markup tags in JSP. 
• Tracking the user: Selections made by the user during user interaction with the website by maintaining the information in the session or cookies can be tracked with JSP. 

Conclusion

Here comes the end of brief information on the advanced java tutorial. I hope it helps to clear basic questions in simple languages like what is advanced java, its components, and advanced java programming.

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