PLEASE help with my add function

Question

I am very new to Java. Sigh, All i want to do is allow the user to input the details for the patient and then add the new patient to a priority queue.
However, i get the error message "cannot find symbol" , "variable testPq" at the following line... "testPq.add(x, x.priority, x.id);"
The relevant bit of the code is as follows, if anyone can help it would be much appreciated.......
import java.io.*;
import java.util.*;
class Clinic {
     int ctime;
     public static void main(String[] args) throws PqException {     
               int age,
                    timearv,
                    choice,
                    id,
                    tl;
               String name;
               Scanner input = new Scanner( System.in );
          Clinic c = new Clinic();
               System.out.println("Create patient's ID");
               id = input.nextInt();
               System.out.println("Add patient's age");
               age = input.nextInt();
               System.out.println("Add patient's trauma level");
               tl = input.nextInt();
               System.out.println("Time of arrival?");
               timearv = input.nextInt();
               System.out.println("Add patient's Name");
               name = input.nextLine();
               Patient x = new Patient(id, name, age, tl, timearv);
               System.out.println(x);
//THIS IS WHERE THE PROBLEM ARISES               
System.out.println("Add patient to queue?");
               choice = input.nextInt();
                    if (choice==1){
                    testPq.add(x, x.priority, x.id);
                    else {
                         System.out.println("Do nada");
     }//end of main
     Clinic(){
          //create priority queue that will hold 10 objects     
     Pq testPq  = new Pq(10);
     }//end of constructor
}//end of clinic
     class Pq {
     static private int maxQueue = 100; // max possible size of queue
  private int size,       // size as created by used
               nq,         // current number of objects in queue
              selector;   // index of selected object
  private PObject q [] = new PObject [maxQueue];
  // Constructor for the Priority queue *****************************
  public Pq(int m) {
    if (m <= maxQueue) size = m;
     else { size = maxQueue;
            System.out.println("Warning: size set to max =100\n");
    nq =0;
  } // of Pq constructor
     //add
     public void add(Object x, int priority, int id) throws PqException {
    if (!(this.isFull())) {
      PObject y = new PObject(x,priority,id);
      q[nq] = y;
       selector = nq; // default setting for the selector
       nq++;
     else throw new PqException("queue is full");
  } // of add
}//end of Pq class
class PObject{
  /* An ancilliary class used to 'wrap up ' objects in the queue and
     so enable a priority and id to be associated with each one. */
  Object obj;
  int priority;
  int id;
  // Constructor method
  PObject(Object x, int p, int s) {
    obj = x;  priority = p; id = s;
  } // of Priority Object constructor
} // of class PObject
class PqException extends Exception {
  PqException (String s) {super(s);}
} // of class PqException ************

Answer 1

2. where does that "isFull" method come from ?His class implements the IOsmosis interface.don't get me started on the whole
"I-prefix-for-interfaces-convention" thing ! Class
names should start with a "C" !i omitted this from the code previously, to save on space....
i have declared the queue in the clinic constructor because a menu driven class when run will create a new clinic, when this new clinic is created it will need to have a Pq in it....everything works fine until i add the line "testPq.add(x, x.priority, x.id);" PLEASE REMEMBER I AM VERY NEW TO ALL OF THIS.....
public boolean isEmpty ()  {return nq == 0;}
     public boolean isFull ()   {return nq == size;}
     public int length()        {return nq;}