Coding running text via bluetooth

#include <SoftwareSerial.h>

#define rxPin 3

#define txPin 4

SoftwareSerial mySerial(rxPin, txPin); // RX, TX

char myChar ;

void setup() {

Serial.begin(9600);

Serial.println("Xiexierifky@blogspot.com");

}

void loop(){

while(mySerial.available()){

myChar = mySerial.read();

Serial.print(myChar);

}

while(Serial.available()){

myChar = Serial.read();

mySerial.print(myChar);

}

}