System.out.println("");
int print=NUM / 10;
long retval=0;
long start=System.currentTimeMillis();
for(int i=0; i < NUM; i++) {
retval=counter.incrementAndGet();
if(i > 0 && i % print == 0)
System.out.println("-- count=" + retval);
}
long diff=System.currentTimeMillis() - start;
System.out.println("\n" + NUM + " incrs took " + diff + " ms; " + (NUM / (diff / 1000.0)) + " ops /sec\n");