Profile the elapsed time of code blocks in milliseconds using ProfileTime class.

App.java

// Sample
ProfileTime.exec("myMethod", new Runnable() {
    @Override
    public void run() {
       myMethod();
    }
 });
// Output - myMethod => elapsed: 9

ProfileTime.java

import java.util.concurrent.TimeUnit;

public class ProfileTime {

    public static void exec(String name, Runnable runnable) {

        long start = System.nanoTime();

        runnable.run();

        long elapsed = System.nanoTime() - start;

        print(name, elapsed);
    }

    private static void print(String name, long elapsed) {

        System.out.println("*********************************");
        System.out.println("*                               *");
        System.out.println("   " + name + " => " + "elapsed: " + TimeUnit.MILLISECONDS.convert(elapsed, TimeUnit.NANOSECONDS));
        System.out.println("*                               *");
        System.out.println("*********************************");
    }
}