System.out.println("Turns for " + numPlayers + " players:\n");

for(int i = 1; i <= numPlayers; i++) {
    turn++;
    System.out.println("Turn " + turn + " --> Player " + i);
    if(i == numPlayers) {
        i = 0;
        System.out.println("---");
    }
    if(turn==20) break;
}