public class CompareLoops
{
public static void main(String[] args)
{
long startTime1, startTime2, endTime1, endTime2;
final int REPEAT = 100000;
startTime1 = System.currentTimeMillis();
for(int x = 0; x <= REPEAT; ++x)
for(int y = 0; y <= REPEAT; ++y);
endTime1 = System.currentTimeMillis();
System.out.println("Time for loops starting from 0: " +
(endTime1 - startTime1) + " milliseconds");
startTime2 = System.currentTimeMillis();
for(int x = REPEAT; x >= 0; ––x)
for(int y = REPEAT; y >= 0; ––y);
endTime2 = System.currentTimeMillis();
System.out.println("Time for loops ending at 0: " +
(endTime2 - startTime2) + " milliseconds");
}
}