Java 9 Concurrency Cookbook - Second Edition

How to do it...

Follow these steps to implement the example:

1. Create a class named ReportGenerator and specify that it implements the Callable interface parameterized by the String class:

        public class ReportGenerator implements Callable<String> {

2. Declare two private String attributes named sender and title. These attributes will represent the data of the report:

        private final String sender;         private final String title;

3. Implement the constructor of the class that initializes the two attributes:

        public ReportGenerator(String sender, String title){           this.sender=sender;           this.title=title;         }

4. Implement the call() method. First, put the thread to sleep for a random period of time:

        @Override  public String call() throws Exception { ...