Learn Spring Tutorial – Javatpoint

The Spring framework consists of several modules such as IOC, AOP, DAO, Context, ORM, WEB MVC and others. We will learn these modules on the next page. Let’s first understand IOC and dependency injection.

Inversion control (IOC) and dependency injection

These are the design models that are used to eliminate dependency on program code. They make the code easier to test and maintain. Let’s understand this with the following code:

</p> <p>Class Employee {Address address; Employee () {address = new address (); }}<br />

In this case, there is a relationship between the employee and the address (close connection). In the Control Inversion scenario, we do something like this:

</p> <p>Class Employee {Address address; Employee (address address) {this.address = address; }}<br />

In this way, the IOC makes the code weakly bound. In this case, we do not need to change the code if our logic moves to a new environment.

In the Spring framework, the IOC container is responsible for injecting dependency. We provide metadata to the IOC container via an XML file or an annotation.

Advantage of injecting addiction

• makes loosely coupled code so easy to maintain
• makes the code easy to test

Advantages of the Spring Framework

There are many benefits to the Spring Framework. They are as follows:

1) Predefined templates

Spring framework provides templates for JDBC, Hibernate, JPA and more. technologies. So you don’t need to write too much code. It hides the basic steps of these technologies.

For example, with JdbcTemplate, you don’t have to write the code to handle exceptions, create a connection, create an operator, make a transaction, close a connection, and so on. You only need to write the code to complete the request. This saves a lot of JDBC code.

2) Loose connection

Spring applications are poorly connected due to injection addiction.

3) Easy to test

Addiction injection makes application testing easier. The EJB or Struts application requires a server to run the application, but the Spring framework does not require a server.

4) Medicine

The spring frame is light due to the implementation of POJO. Spring Framework does not force the programmer to inherit a class or apply any interface. That is why it is called non-invasive.

5) Rapid development

The Dependency Injection function of the Spring Framework and the support of various frames makes it easy to develop the JavaEE application.

6) Powerful abstraction

7) Declarative support

It provides declarative support for caching, validation, transactions, and formatting.

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Reference links