Java 9 Concurrency Cookbook - Second Edition

How to do it...

Follow these steps to implement the example:

1. Create a class named Calculator that implements the Runnable interface:

        public class Calculator implements Runnable {

2. Implement the run() method. This method will execute the instructions of the thread we are creating, so this method will calculate the prime numbers within the first 20000 numbers:

        @Override         public void run() {           long current = 1L;           long max = 20000L;           long numPrimes = 0L;            System.out.printf("Thread '%s': START\n",                            Thread.currentThread().getName());           while (current <= max) {             if (isPrime(current)) {               numPrimes++;             }             current++;           }           System.out.printf("Thread '%s': END. Number of Primes: %d\n",                          Thread.currentThread().getName(), numPrimes);         }

3. Then, implement ...