Java tutorial
import java.util.Arrays; import java.util.Date; import java.util.Random; public class Main { public static void main(String[] args) { int[] anArray = new int[1000]; Random generator = new Random(); for (int i = 0; i < 1000; i++) { anArray[i] = (generator.nextInt(1000) + 1); } Date before = new Date(); Arrays.sort(anArray); Date after = new Date(); System.out.println("milli seconds" + (after.getTime() - before.getTime())); } }