Sending String from Processing to Arduino Not Working - c

Question

I've collected some string information in processing and I am trying to send it to Arduino. I am getting processing to send the information, however, my output in arduino is weird. I get numbers like "77789...". I am not sure What I am doing wrong. All I need to do is, basically get a string from processing and send it to arduino to display it on a LCD screen.
Any help on this would be appreciated.
Here is my processing code:
import processing.serial.*;
Serial myPort;
XML MSFTxml; // loading Query
XML MSFT; // results of the query
XML row; // first row in the query
XML symbol; // Name of the stock
String symbolTxt;
String val;
void setup() {
size(200,200);
myPort = new Serial(this,"COM3", 9600);
}
void draw() {
updateXMLCall();
delay(10000);
}
void updateXMLCall () {
MSFTxml = loadXML("https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20csv%20where%20url%3D%27http%3A%2F%2Fdownload.finance.yahoo.com%2Fd%2Fquotes.csv%3Fs%3DMSFT%26f%3Dsl1d1t1c1ohgv%26e%3D.csv%27%20and%20columns%3D%27symbol%2Cprice%2Cdate%2Ctime%2Cchange%2Ccol1%2Chigh%2Clow%2Ccol2%27&format=xml&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys");
MSFT = MSFTxml.getChild("results"); //Getting the first tag "results" in the query MSFT
row= MSFT.getChild("row"); //first child tag "row"
symbol = row.getChild("symbol"); //name of the stock
symbolTxt = symbol.getContent().toString(); //converting the name of the stock into a string
myPort.write(symbolTxt);
println(symbolTxt);
}
Here is my arduino Code:
#include <Wire.h>
#include "rgb_lcd.h"
rgb_lcd lcd;
const int colorR = 50;
const int colorG = 0;
const int colorB = 0;
void setup()
{
Serial.begin(9600);
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
lcd.setRGB(colorR, colorG, colorB);
// Print a message to the LCD.
lcd.setCursor(0, 1);
}
void loop()
{
String content = "";
if (Serial.available()) {
while (Serial.available()) {
content += Serial.read();
lcd.print(content);
Serial.print(content);
lcd.setCursor(0, 1);
}
}
delay(100);
}

Answer 1

The problem is the use of += in C += doesn't concat strings.
You need to concatenate the char get from Serial.read() like here for example:
Convert serial.read() into a useable string using Arduino?