@Scopes annotation is used to indicate the scope of a bean, either singleton, prototype, request, session, or a few custom scopes.

To make the EmailService bean class a singleton, we need to annotate the class with @Scope and @Service. So, our EmailService class will look as follows: 

package com.packt.springbeanannotation;

import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;

@Service
@Scope("singleton")
public class EmailService {
  
  private String emailContent;
  private String toAddress;
  
  public EmailService() {
    System.out.print(" 
 Object of EmailService is Created !!! ");
  }
  
  public String getEmailContent() {
    return emailContent;
  }
  
  public void setEmailContent(String emailContent) {
    this.emailContent = emailContent;
  }
  
  public String getToAddress() {
    return toAddress;
  }
  
  public void setToAddress(String toAddress) {
    this.toAddress = toAddress;
  }
  
}

We will use the same SpringBeanApplication.java class to test our annotation changes, and the output will also be the same as the XML configuration example.