Text sent back from Arduino

Arduino

void setup()
{
Serial.begin(9600);
Serial.println("Hellow world");
}
void loop()
{

}

Java

class sample{
public static void main(String args[]){
  System.out.println("Hello World");
}

}

Both languages use "println" to display words. It makes easier to understand.

Also escape sequence is available such as , \n.