apply plugin:'application'
mainClassName = 'sample.Main'

run { standardInput = System.in }
sourceSets { main { java { srcDir './' } } }

repositories {
    jcenter()
}

dependencies {
    // add dependencies here like following
    // compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.9'
    implementation 'org.springframework:spring-context:5.3.17'
}          



build.gradle

package sample;

import org.springframework.stereotype.Component;

@Component
public class GreetingService {
    public String hello(String message) {
        return "Hello " + message + "!";
    }
}

GreetingService.java

package sample;

import org.springframework.stereotype.Component;

@Component
public class MyApp {
    private final GreetingService greetingService;

    public MyApp(GreetingService greetingService) {
        this.greetingService = greetingService;
    }

    public void run(String message) {
        System.out.println(this.greetingService.hello(message));
    }
}

MyApp.java

package sample;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.support.GenericApplicationContext;

@Configuration
@ComponentScan
public class Main {
    public static void main(String[] args) {
        try (GenericApplicationContext applicationContext = new AnnotationConfigApplicationContext(Main.class)) {
            MyApp app = applicationContext.getBean(MyApp.class);
            app.run("Spring");
        }
    }
}