[Spring Boot2.4.2] XMLで文字列表示

MainController.java

package com.example.demo;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MainController {
	public static void main(String[] args) {
		
		ClassPathXmlApplicationContext context =
				new ClassPathXmlApplicationContext("applicationContext.xml");
		
		ISyain syain = context.getBean("testSyain", ISyain.class);
		
		System.out.println(syain.getHello());
		context.close();		
	}
}

applicationContext.xml

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

	<bean id="testSyain" class="com.example.demo.Syain"></bean>
</beans>

ISyain.java

package com.example.demo;

public interface ISyain {
	public String getHello();
}

Syain.java

package com.example.demo;

public class Syain implements ISyain {
	@Override
	public String getHello() {
		return "Hello World!";
	}
}

なるほどー