Problem outputing to RS-232

Projects Programming
2 
void setup() {
    Serial.begin(9600);
    Serial.begin(9600);
}

void loop() {
    char char_a = 'a';

    Serial.write(char_a); delay(100);
 
    Serial1.write(char_a); delay(100);
}

Generally, before you can use Serial1.write(), you need to use Serial1.begin(). On the Leonardo, you need to wait for the instance to actually start.