// allow moving directly to next message
public Mail getNextUnreadMail() {
for (final Mail m : mailbox) {
if (m.isUnread()) {
return m;
}
}
return null;
}
public int numUnreadMessages() {
int num = 0;
for (final Mail m : mailbox) {
if (m.isUnread()) {
num++;
}
}
return num;
}