Unpacking serial data from arduino

Processing Electronics (Arduino, etc.)
9

ok, this is cleaner and easier to understand. but I am still getting an error.

Cannot invoke size() on the array type String

void serialEvent( Serial port) {

//the '.' is our end delimiter indicating the end of a complete packet

 String val = trim(port.readStringUntil('.'));

//make sure our data isn't empty before continuing

if (val != null) {

String i, sonar_distance, ir_distance;

String[] rawData = val.split(",");

if(rawData.size()>=3){  //Expecting three values//error=Cannot invoke size() on the array type String[]

  i = rawData[0];

  sonar_distance = rawData[1];

  ir_distance = rawData[2];

}