Nano and milliseconds
java, nanotime, time
Solution
The conversions follow the usual rules for Standard SI Units:
long nanoSeconds = ...
double microSeconds = nanoSeconds / 1e3;
double milliSeconds = microSeconds / 1e3;
double seconds = milliSeconds / 1e3;
// Shortcuts:
double milliSeconds = nanoSeconds / 1e6;
double sconds = nanoSeconds / 1e9;
For some conversions, you can also have a look at the TimeUnit class: It allows conversions between values in different time units, for example
long microSeconds = NANOSECONDS.toMicros(nanoSeconds);
However, it unfortunately does not allow time spans given in `double` precision, but only as `long` values.
An aside, also mentioned in the comments: Measuring time spans in the order of 10-15ms usually makes no sense due to the limited resolution of the internal timer.
Problem
``` long startTime = System.nanoTime(); long startTimer = System.currentTimeMillis(); M = app.decriptare_simpla(C); long endTime = System.nanoTime(); long stopTimer = System.currentTimeMillis(); //mesajul initial dupa decriptare System.out.println("M : " + M.toString()); System.out.println("Decriptarea a durat: " + (endTime - startTime)); System.out.println("Decriptarea a durat: " + (stopTimer - startTimer)); ``` This gave me: ``` Decriptarea a durat: 14811776 Decriptarea a durat: 15 ``` What I want to ask is how much of a second are those 2 numbers? I mean are they, 0.15, 0.015, 0.0015...? I'd like to print them in that manner, not as an `long` but don't know how many decimals to add. Same question for the other number.