import java.text.SimpleDateFormat;
import java.util.Date;
public class MyClass {
public static String getDateTimeMilliseconds() {
return new SimpleDateFormat("yyyy/MM/dd HH:mm:ss.SSS").format(new Date());
}
public static void main(String args[]) {
System.out.println(getDateTimeMilliseconds());
}
}
/*
run:
2021/03/24 10:10:50.557
*/