import java.time.Duration;
import java.time.Instant;
public class RunningTime {	public static void main(String[] args) {	// Create a first time stamp	Instant start = Instant.now();	// Time-consuming code	for(int idx = 1; idx <= 1000_000_000; idx++) {	System.out.println(idx);	}	// Create a second time stamp	Instant end = Instant.now();	// Measure time elapsing between 2 time stamps	System.out.println("Running time in ms: " +	Duration.between(start, end));	}
}