What is Advance Java

 What is Advance Java?

The dictionary meaning of advance is a forward movement or a development or improvement and the meaning of improve means thing that makes something better. All in all, we have to improve our basic knowledge to master in that particular field.

Java is divided into two parts i.e. Core Java (J2SE) and Advanced Java (JEE). The core Java part covers the fundamentals (data types, functions, operators, loops, thread, exception handling, etc.) of the Java programming language. It is used to develop general purpose applications. Whereas Advanced Java covers the standard concepts such as database connectivity, networking, Servlet, web-services, etc. In this section, we will discuss what is advance Java, its benefit, uses, topics of advance Java, and the difference between core Java and advance Java.

Advance Java

It is a part of Java programming language. It is an advanced technology or advance version of Java specially designed to develop web-based, network-centric or enterprise applications. It includes the concepts like Servlet, JSP, JDBC, RMI, Socket programming, etc. It is a specialization in specific domain.

Most of the applications developed using advance Java uses tow-tier architecture i.e. Client and Server. All the applications that runs on Server can be considered as advance Java applications.

Why advance Java?

• It simplifies the complexity of a building n-tier application.
• Standardizes and API between components and application sever container.
• JEE application Server and Containers provides the framework services.

Benefits of Advance Java

The four major benefits of advance Java that are, network centric, process simplification, and futuristic imaging standard.

• JEE (advance Java) provides libraries to understand the concept of Client-Server architecture for web- based applications.
• We can also work with web and application servers such as Apache Tomcat and Glassfish Using these servers, we can understand the working of HTTP protocol. It cannot be done in core Java.
• It is also important understand the advance Java if you are dealing with trading technologies like Hadoop, cloud-native and data science.
• It provides a set of services, API and protocols, that provides the functionality which is necessary for developing multi-tiered application, web-based application.
• There is a number of advance Java frameworks like, Spring, Hibernate, Struts, that enables us to develop secure transaction-based web applications such as banking application, inventory management application.

Difference between Core Java and Advance Java

Criteria	Core Java	Advance Java
Used for	It is used to develop general purpose application.	It is used to develop web-based applications.
Purpose	It does not deal with database, socket programming, etc.	It deals with socket programming, DOM, and networking applications.
Architecture	It is a single tier architecture.	It is a mute-tier architecture.
Edition	It is a Java Standard Edition.	It is a Java Enterprise Edition.
Package	It provides java.lang.* package.	It provides java.servlet.* package.

Advance Java Topics or Syllabus

1. Basics of a Web application

• What is a web application?
• What is a web client and web server?
• How do client and server communicate?
• HTTP protocol basics
• HTML language basics
• What is a TCP/IP port, URL?
• Need for a Web Container

2. Web Container and Web Application Project Set up

• To set up Tomcat Container on a machine
• To set up a Servlets JSP project in Eclipse
• To configure dependency of Servlet JSP APIs
• Web application project structure

3. Servlets

• What are Servlets?
• What can they do? Why are they needed?
• How do Servlets look in code?
• HTTP Methods; GET, POST, PUT, DELETE, TRACE, OPTIONS
• GET/POST request; differences between the two
• Servlet Lifecycle
• Servlet Context and Servlet Config
• Forwarding and Redirection of requests

4. Session Management

• What is a session?
• Why is it required?
• How to get a session?
• Session information passing between client and server
• Session information passing mechanisms - Cookies, Rewriting
• How to destroy a session

5. JSPs

• Introduction to JSP and need for JSPs
• Basic HTML tags
• JSP Lifecycle

6. JSP Elements

• Scriptlets
• Expressions
• Declarations
• Significance of above elements and fitment into the JSP Lifecycle
• What are Directives in JSP?
• Page Directive
• Include Directives
• Taglib Directive

7. JSP Tag library

• JSP Standard Actions
• Expression Language
• JSTL basics and it's usage
• Need for Custom Tag Library
• Custom Tag Library implementation

Struts Framework (version 2.x)

1. Basics of MVC

• What is MVC?
• MVC Type1 and Type2 architecture
• Why Struts framework?
• Struts 1 overview
• Struts 1 and Struts 2 comparison

2. Struts 2 Architecture

• Architecture Diagram explanation of following components:
• Components of Model, Views and Controller in Struts Framework
• Interceptors
• Model/Action classes
• Value Stack
• OGNL
• Introduction to configurations; framework and application architecture
• Declarative and Annotations configuration approaches

3. Struts 2 set up and first Action class

• Download JAR files
• Struts 2 project build up and Configuration files
• To build Action class
• To intercept an HTTP request via Struts2 framework using Action class
• Defining data and business logic in Action class
• Preparing and Forwarding control to Views

4. Struts 2 Interceptors

• What are Interceptors
• Responsibilities of an Interceptor
• Mechanism of Interceptor calling in Struts 2
• Defining Interceptors
• Defining Interceptor stacks
• Defining Custom Interceptors

5. Struts 2 Tag Library

• Introduction to tag library of Struts 2 and it's usage

6. Struts 2 Validations

• Validations using Validateable interface
• Workflow interceptor mechanism for validations
• Validations using Validateable interface
• Validation Framework introduction and architecture
• Validating user input with above two mechanisms

7. Struts 2 Tiles Frameworks

• Introduction to Tiles in a page
• Struts2 Tiles framework introduction
• Defining tiles.xml file
• Configuring pages for tiles
• A complete Tiles example with Struts2

Hibernate Framework (version 3.x)

1. Introduction

• What is ORM principle?
• Why ORM?
• ORM implementations

2. Hibernate Architecture

• Introduction to Hibernate
• Hibernate Architecture
• What are Persistent classes?

3. Hibernate CRUD

• Setting up Hibernate project
• Configuring all JARs and XML files
• Setting up connection to DB using Hibernate
• Performing basic CRUD operations using Hibernate API
• Object Identity; Generator type classes
• Using SQL with Hibernate
• Using HQL
• Using Criteria queries

4. Mapping Collections and Associations

• To define sets, mas, lists in Hibernate
• Association Mappings:
1. One to one
2. One to many
3. Many to one
4. Many to many
• Hibernate Caching
• What is caching?
• What are the types of caching in Hibernate?
• Explanation of various caching mechanisms in Hibernate

5. Using Hibernate Annotations

• Sample example of using Hibernate Annotations

Spring Framework (version 3.x)

1. Introduction to spring

• What is Spring?
• Spring Architecture explanation and all it's components

2. Introduction to all modules of Spring

• Spring Bean Factory
• Spring Application Context
• Spring DI
• Spring Integration; Spring messaging, Spring JMS
• Spring MVC
• Spring DAO

3. Setting up spring

• Setting up of Spring framework
• Download JARs
• Configure XML files

4. Dependency Injection

• What is Dependency Injection?
• How is it implemented using Spring Framework?
• Bean Wiring mechanisms in Spring

5. Spring AOP

• What is Spring AOP?
• Implementation of Spring AOP