Why do we use @bean?

The @Bean annotation returns an object that spring registers as a bean in application context. The logic inside the method is responsible for creating the instance. When do we use @Bean annotation? When automatic configuration is not an option.

What is JavaBeans in j2ee?

The ‘beans’ of JavaBeans are classes that encapsulate one or more objects into a single standardized object (the bean). As part of the standardization, all beans must be serializable, have a zero-argument constructor, and allow access to properties using getter and setter methods.

What is Java bean class in Java?

JavaBeans are classes that encapsulate many objects into a single object (the bean). It is a java class that should follow following conventions: All properties in java bean must be private with public getters and setter methods.

What are the different features of Java Bean?

Here are a few unique characteristics that make JavaBeans different from other classes in Java:

• JavaBeans provide default constructor without any conditions or arguments.
• JavaBeans are serializable and are capable of implementing the Serializable interface.
• JavaBeans usually have several ‘getter’ and ‘setter’ methods.

What is @bean in spring boot?

Spring @Bean annotation tells that a method produces a bean to be managed by the Spring container. It is a method-level annotation. During Java configuration ( @Configuration ), the method is executed and its return value is registered as a bean within a BeanFactory .

What is JSP life cycle?

A JSP life cycle is defined as the process from its creation till the destruction. This is similar to a servlet life cycle with an additional step which is required to compile a JSP into servlet.

How do you create a Java Bean?

To create a Java bean, follow these seven steps.

1. Open your text editor and create a new file that will contain the Java bean source.
2. Save your file as Person.
3. Open your text editor to create the class that will instantiate the Java bean.
4. Save your file as CreateAJavaBean.

Why JSP is used in Java?

It is used to create dynamic web content. In this JSP tags are used to insert JAVA code into HTML pages. It is an advanced version of Servlet Technology. It is a Web based technology helps us to create dynamic and platform independent web pages.