Book Image

Mockito for Spring

By : Sujoy Acharya
Book Image

Mockito for Spring

By: Sujoy Acharya

Overview of this book

Table of Contents (12 chapters)
Mockito for Spring
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Working with asynchronous tasks


Java 7 has a feature called Future. Futures let you retrieve the result of an asynchronous operation at a later time. The FutureTask class runs in a separate thread, which allows you to perform non-blocking asynchronous operations. Spring provides an @Async annotation to make it more easier to use. We'll explore Java's Future feature and Spring's @Async declarative approach:

  1. Create a project, TimeTravellingWithSpring, and add a package, com.packt.async.

  2. We'll exercise a bank's use case, where an automated job will run and settle loan accounts. It will also find all the defaulters who haven't paid the loan EMI for a month and then send an SMS to their number. The job takes time to process thousands of accounts, so it will be good if we can send SMSes asynchronously to minimize the burden of the job. We'll create a service class to represent the job, as shown in the following code snippet:

    @Service
    public class AccountJob {
       @Autowired
       private SMSTask smsTask...