Computer scienceBackendSpring BootCore container

ApplicationContext

Return the bean

Report a typo

Write a program that contains this configuration class:

Java

@Configuration
public class Config {

    @Bean
    public String bean1() {
        return "String for bean1";
    }

    @Bean
    public String bean2() {
        return "String for bean2";
    }

    @Bean
    public int[] bean3() {
        return new int[]{1, 2};
    }
}

Kotlin

@Configuration
open class Config {
    @Bean
    open fun bean1(): String = "String for bean1"

    @Bean
    open fun bean2(): String = "String for bean2"

    @Bean
    open fun bean3(): IntArray {
        return intArrayOf(1, 2)
    }
}

An application context should be created based on that Config class:

Java

public class Application {
    public static void main(String[] args) {
        var context = new AnnotationConfigApplicationContext(Config.class);
    }
}

Kotlin

@SpringBootApplication
open class Application

fun main(args: Array<String>) {
    val context = AnnotationConfigApplicationContext(Config::class.java)
}

Match each getBean(...) method invocation with what it returns. You have the following options:

Java

A) context.getBean("bean1")

B) context.getBean("bean2", String.class)

C) context.getBean(String.class)

D) context.getBean(int[].class)

Kotlin

A) context.getBean("bean1")

B) context.getBean("bean2", String::class.java)

C) context.getBean(String::class.java)

D) context.getBean(IntArray::class.java)

Match the items from left and right columns

object of the String type

array of ints

throws an exception

object of the Object type

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