Testing time taken by a Java Program

Question

Dear all,
Would the following code suffice in getting a good average running time of a Java program.
long start, end;
float seconds;
long counter = 0;
start = System.currentTimeMillis();//get starting time
while((System.currentTimeMillis() - start) < 100000){
//call your program
counter++;
end = System.currentTimeMillis();
seconds = (end - start)/1000;
System.out.println("seconds :- " + seconds +" counter:- " + counter );
System.out.println("Average time:- " + (seconds/counter));
Thanks in advance for any help

Answer 1

well.. what pops out immediatly is that you didnt calculate first how long the loop itself takes.
meaning.. in the time result that you get, there are also all the loop operations.
measure an empty look running the same number of times and reduce it from your result.
by the way, do you know an easy way to decide if a string can be a valid class name?