Annotate Required Field Text For Free

Spring Annotations are a form of metadata that provides data about a program. Annotations are used to provide supplemental information about a program. It does not have a direct effect on the operation of the code they annotate. It does not change the action of the compiled program.

Examples of data annotation methods include semantic, text classification, and image and video annotation. Text classification is one of the most common data annotation techniques we encounter, such as putting tags on blog posts to group them by topic.

@SpringBootApplication This is the most common Spring Boot annotation and you will find it probably in every single Spring Boot application. Since Spring Boot allows you to execute your Web application without deploying it into any web server like Tomcat.

Basically, there are 6 types of annotation available in the whole spring framework.

Spring Boot Annotations are a form of metadata that provides data about a program that is not a part of the program itself. They do not have any direct effect on the operation of the code they annotate.

The @Required annotation applies to bean property setter methods and it indicates that the affected bean property must be populated in XML configuration file at configuration time. Otherwise, the container throws a BeanInitializationException exception. Following is an example to show the use of @Required annotation.

@SpringBootApplication: It is a combination of three annotations @EnableAutoConfiguration, @ComponentScan, and @Configuration.

When both the @Primary and @Qualifer annotations are present, then @Qualifier takes precedence. @Primary defines a default value and bean marked with this annotation will be used unless otherwise indicated. @Qualifier annotation is specific and is used when a particular bean is needed.

Data Annotations help us to define the rules to the model classes or properties for data validation and displaying suitable messages to end users.

We'll use the following Data Annotation attributes:Required Indicates that the property is a required field.DisplayName Defines the text to use on form fields and validation messages.StringLength Defines a maximum length for a string field.Range Gives a maximum and minimum value for a numeric field.More items...?Aug 27, 2020