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I've designed a class that fills an array with integers using a various number of threads, in order to see the power of multi threading. But according to my result, there is none... The idea : The idea was too fill an array of 100000000 integers with the value "1". Starting with 1 thread (one threads fills the whole array) and incrementing it until 100 threads (each thread fills a sub array of size 100000000/nbThreads) Example : With 10 threads, I create 10 threads and each is filling an array of 10000000 integers. Here is my code: public class ThreadedArrayFilling extends Thread{ private int start; private int partitionSize; public static int[] data; public static final int SIZE = 100000000; public static final int NB_THREADS_MAX = 100; public static void main(String[] args){ data = new int[SIZE]; long startTime, endTime; int partition, startIndex, j; ThreadedArrayLookup[] threads; for(int i = 1; i <= NB_THREADS_MAX; i++){ startTime = System.currentTimeMillis(); partition = SIZE / i; startIndex = 0; threads = new ThreadedArrayLookup[i]; for(j = 0; j < i; j++){ threads[j] = new ThreadedArrayLookup(startIndex, partition); startIndex += partition; } for(j = 0; j < i; j++){ try { threads[j].join(); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } endTime = System.currentTimeMillis(); System.out.println(i + " THREADS: " + (endTime - startTime) + "ms"); } } public ThreadedArrayFilling(int start, int size){ this.start = start; this.partitionSize = size; thi

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