soujava-threads-main.java

package forkjoin;

import java.math.BigInteger;
import java.util.concurrent.ForkJoinPool;


public class Main {
	
	public static void main(String[] args) {

		int n = 50, processors = Runtime.getRuntime().availableProcessors();
		System.out.println("Fibonacci num: " + n);
		System.out.println("Processors: " + processors);

		long time = System.nanoTime();
		FibonacciProblem fib = new FibonacciProblem(n);
		FibonacciTask fibTask = new FibonacciTask(fib);
		
		ForkJoinPool pool = new ForkJoinPool();
		Long result1 = pool.invoke(fibTask);

		System.out.println("Result F/J: " + result1);
		System.out.println("Time F/J: " + ((System.nanoTime() - time) / 1_000_000) + "ms");
	}
}