/home/wpollock1/public_html/AJava/TimerRes.java

// This program attempts to measure the system clock resolution.
// On my Windows 10 PC (in 5/2021), I see 200-210 updates per second.
//
// Writeen 5/2021 by Wayne Pollock, Tampa Florida USA

public class TimerRes {
    public static void main (String[] args) {
        System.out.println( "Starting 60 second measurement..." );
        long now = System.currentTimeMillis();
        long end = now + 60 * 1_000;  // One minute later
        long previous = now;
        int numOfTimeChanges = 0;
        while ( now <= end ) {
            if ( now != previous ) {
                ++numOfTimeChanges;
                previous = now;
            }
            now = System.currentTimeMillis();
        }
        System.out.printf( "Number of Times the clock updates per "
            + "second is %.2f%n", (numOfTimeChanges/60.0) );
    }
}