I see. I'm not very familiar with Java, but some of the functions here look promising:
https://www.tutorialspoint.com/javatime/javatime_clock.htm
In C++, you'd call a clock() function at the start of the function, another one at the end, and compare the difference, like a stopwatch. Or more commonly you start a clock first, then run your function 1000x, then check the difference.
package chobit;
import java.util.Calendar;
import java.util.Date;
public class TimeGate {
// a gate that only opens x minutes after it has been set
private int pause = 1;
private Date openedGate = addMinutesToJavaUtilDate(new Date(), pause);
private Date checkPoint = new Date();
public TimeGate(int minutes) {
super();
this.pause = minutes;
}
public TimeGate() {
}
public Boolean isClosed() {
return !openedGate.before(new Date());
}
public void close() {
this.openedGate = addMinutesToJavaUtilDate(new Date(), pause);
}
public void close(int minutes) {
Date now = new Date();
openedGate = addMinutesToJavaUtilDate(now, minutes);
}
private Date addMinutesToJavaUtilDate(Date date, int minutes) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.MINUTE, minutes);
return calendar.getTime();
}
public void setPause(int pause) {
if(pause <60 && pause >0) {
this.pause = pause;}
}
public void resetCheckPoint() {
this.checkPoint = new Date();
}
public int givenTwoDateTimesInJava8_whenDifferentiatingInSeconds_thenWeGetTen() {
Date now = new Date();
long diff = now.getTime() - this.checkPoint.getTime();
long diffSeconds = diff / 1000 % 60;
// long diffMinutes = diff / (60 * 1000) % 60;
// long diffHours = diff / (60 * 60 * 1000) % 24;
// long diffDays = diff / (24 * 60 * 60 * 1000);
// System.out.print(diffDays + " days, ");
// System.out.print(diffHours + " hours, ");
// System.out.print(diffMinutes + " minutes, ");
// System.out.print(diffSeconds + " seconds.");
return (int) diffSeconds;
}
}
use example:
TimeGate timeGate = new TimeGate();
timeGate.resetCheckPoint();
for (int i = 0; i < 10000000; i++) {
System.out.println("");
}
System.out.println(timeGate.givenTwoDateTimesInJava8_whenDifferentiatingInSeconds_thenWeGetTen());