spring

package mybean;

public class MyBean {
    private String name = "大法师";

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

package mybean;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MySpring {
    @Bean
    public MyBean make() {
        return new MyBean();
    }
}　　

 public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        MyBean myBean = (MyBean) context.getBean("make");
        System.out.println(myBean.getName());//大法师
   }

package mybean;

public class Animal {
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

 public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
       Animal animal = (Animal)context.getBean("animal");
        System.out.println(animal.getName());//小猫
   }

applicationContext.xml中配置
    

package mybean;

import org.springframework.stereotype.Component;

@Component
public class MyHome {
    public void play() {
        System.out.println("这是我家");
    }

    public void run() {
        System.out.println("这不是我家");
    }
}

public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
       MyHome myHome = (MyHome)context.getBean("myHome");
        myHome.play();//这是我家
   }