You might create an excess of one bean of a similar type and need to wire just a single one of them with the property. In such cases, you can utilize the @Qualifier annotation alongside @Autowired to evacuate the disarray by determining which correct bean will be wired. In this section, we'll look at a precedent to demonstrate the utilization of a @Qualifier annotation.

The content of the bean.xml configuration file is as follows:

<?xml version = "1.0" encoding = "UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/context
   http://www.springframework.org/schema/context/spring-context.xsd">

    <context:annotation-config/>  <!--after this tag, you have to write the beans-->

    <!-- Definition for Fighters bean without constructor-arg  -->
    <bean id="fighters" class="qualifierAnnotation.Fighters"/>

    <!--fighter 1-->
    <bean id="fighter1" class="qualifierAnnotation.UsersForQualifier">
        <property name="name" value="Naruto Uzumaki"/>
        <property name="village" value="Konohagakure"/>
    </bean>

 <!--fighter 2-->
    <bean id="fighter2" class="qualifierAnnotation.UsersForQualifier">
        <property name="name" value="Gaara"/>
        <property name="village" value="Sunagakure"/>
    </bean>
</beans>

Here's the content of AnnotationBasedQualifierApp.kt:

fun main(args: Array<String>) {
    val context = ClassPathXmlApplicationContext("qualifierAnnotation/beans_for_qualifier.xml")
    val fighters = context.getBean("fighters") as Fighters
    fighters.getName()
    fighters.getVillage()
}

Now, add another class. Here's the content for UsersForQualifier.kt:

class UsersForQualifier{
    private var village: String? = null
    private var name: String? = null

    fun setVillage(village: String?) {
        this.village = village
    }

    fun getVillage(): String? {
        return village
    }

    fun setName(name: String) {
        this.name = name
    }

    fun getName(): String? {
        return name
    }
}

Finally, add the Fighters.kt class. Here's the content of this class:

class Fighters {
    @Autowired
    @Qualifier("fighter1")
    lateinit var usersForQualifier: UsersForQualifier

    init {
        println("Fighters constructor.")
    }

    fun getName() {
        println("Name: " + usersForQualifier.getName())
    }

    fun getVillage() {
        println("Village: " + usersForQualifier.getVillage())
    }
}

If you run the output, it will be as follows: 

Fighters constructor.
Name: Naruto Uzumaki
Village: Konohagakure

Modify the qualifier value like so:

 @Qualifier("fighter2")

It will create the following output: 

Fighters constructor.
Name: Gaara
Village: Sunagakure