public boolean isPremier(int n) {
boolean isPremier = true;
if (n < 0) {
isPremier = false;
} else if (n != 0 && n != 1) {
for (int i = 2; i <= n/2; i++) {
if (n != i && n % i == 0) {
isPremier = false;
break;
}
}
}
return isPremier;
}


;-)
HackTrack