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In case we are using @Autowired annotation on our setter method, we need not to use @Required annotation because by default @Autowired annotation has true value for its required attribute. Note: As of Spring 5.1, the @Required annotation is deprecated in favor of using constructor injection for required settings.

2 Answers. As you can see, the only way to declare your Service final is by using the constructor injection, which replaces the @Required annotation because it forces the user of your class to instantiate it with the required services. The user does not have to be Spring, it could be a simple unit test as well.

Annotations are used to provide supplemental information about a program. Annotations start with '@'. Annotations do not change the action of a compiled program. Annotations help to associate metadata (information) to the program elements i.e. instance variables, constructors, methods, classes, etc.

We can enable @Required annotation in two ways in Spring XML configuration: Either by registering RequiredAnnotationBeanPostProcessor in the bean definition. Or can be implicitly registered by including the <context:annotation-config/> tag in an XML-based Spring configuration.

Use @Field to define a structured data type's field name for an object mapped to NoSql data. Table 2-24 describes this annotation's elements. (Optional) The data type's name of the field. The @Field annotation is a generic form of the @Column annotation, which is not specific to relational databases.

We can enable @Required annotation in two ways in Spring XML configuration: Either by registering RequiredAnnotationBeanPostProcessor in the bean definition. Or can be implicitly registered by including the <context:annotation-config/> tag in an XML-based Spring configuration.

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.

The @Required annotation in spring is a method-level annotation used in the setter method of a bean property and therefore making the setter-injection compulsory.

In case we are using @Autowired annotation on our setter method, we need not to use @Required annotation because by default @Autowired annotation has true value for its required attribute. Note: As of Spring 5.1, the @Required annotation is deprecated in favor of using constructor injection for required settings.

2 Answers. As you can see, the only way to declare your Service final is by using the constructor injection, which replaces the @Required annotation because it forces the user of your class to instantiate it with the required services. The user does not have to be Spring, it could be a simple unit test as well.

Annotations are used to provide supplemental information about a program. Annotations start with '@'. Annotations do not change the action of a compiled program. Annotations help to associate metadata (information) to the program elements i.e. instance variables, constructors, methods, classes, etc.

We can enable @Required annotation in two ways in Spring XML configuration: Either by registering RequiredAnnotationBeanPostProcessor in the bean definition. Or can be implicitly registered by including the <context:annotation-config/> tag in an XML-based Spring configuration.

Use @Field to define a structured data type's field name for an object mapped to NoSql data. Table 2-24 describes this annotation's elements. (Optional) The data type's name of the field. The @Field annotation is a generic form of the @Column annotation, which is not specific to relational databases.

We can enable @Required annotation in two ways in Spring XML configuration: Either by registering RequiredAnnotationBeanPostProcessor in the bean definition. Or can be implicitly registered by including the <context:annotation-config/> tag in an XML-based Spring configuration.

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.

The @Required annotation in spring is a method-level annotation used in the setter method of a bean property and therefore making the setter-injection compulsory.