Barcode issues

String code = "";           //initialize the output string
boolean endbit = 0;            //a flag to mark 0D received
char temp;

void setup() {
  Serial1.begin(9600);       //initialize the Serial port
  Serial.begin(9600);       //initialize the Serial port
   Serial.println("hello");
}

void loop() {
  if (Serial1.available() > 0)     {
    temp = char( Serial1.read());    //read the input data
    Serial.println("TEMP:"+code);
    code += temp;
     if (temp == 0x0D || temp == '\r'){           // Or temp == '\r'
      Serial.println("CODE:"+code);
      code = "";
      endbit = 0;
      temp = 0;
    }
  }
}