我该如何执行60秒的住院计数

Question

如果等待60秒以上的患者类别将从“低”变为“高”并排在最新的“高”患者类别之后，谁可以帮助我实现此功能。有人可以帮我解决吗？

EmergencyRoomSimulator1.java：

package emergencyroomsimulator1;

import java.util.Random;

public class EmergencyRoomSimulator1 {

         private static final int WAIT_LIMIT = 1000; // 1000 = 1 second 

private PatientQueue pq = new PatientQueue(); 

private void t() { 
    try {  Thread.sleep(new Random().nextInt(WAIT_LIMIT));
    } catch (InterruptedException e) {
    } 
} // end t method

private void patientArrives(Patient p) { 
    pq.registerPatient(p); 
    System.out.println(" ARRIVAL: " + p.getID()); 
    System.out.println(" time arrived: " + p.getTimeArrived()); 
    System.out.println(" category: " + p.getCategory()); 
    System.out.println("------------------------------------"); 
    t(); 
} // end patientArrives method

public void doctorVisits() { 
    Patient p = pq.getNextPatient(); 
    System.out.println(" VISIT: " + p.getID()); 
    System.out.println(" time arrived: " + p.getTimeArrived()); 
    System.out.println(" category: " + p.getCategory()); 
    System.out.println("------------------------------------"); 
    t(); 
} // end doctorVisits method

private void simulate() { 
    System.out.println("------------------------------------"); 
    System.out.println("ER OPEN"); 
    System.out.println("------------------------------------"); 
    patientArrives(new Patient(100, "high")); 
    patientArrives(new Patient(101, "low")); 
    patientArrives(new Patient(102, "low")); 
    patientArrives(new Patient(103, "high")); 
    patientArrives(new Patient(104, "high")); 
    patientArrives(new Patient(105, "low")); 
    patientArrives(new Patient(106, "low")); 
    patientArrives(new Patient(107, "high")); 
    doctorVisits(); 
    doctorVisits(); 
    doctorVisits(); 
    doctorVisits(); 
    doctorVisits();
        doctorVisits(); 

    System.out.println("------------------------------------"); 
    System.out.println("ER CLOSED"); 
    System.out.println("------------------------------------"); 
}

    public static void main(String[] args) {
        // TODO code application logic here
      EmergencyRoomSimulator1 er = new EmergencyRoomSimulator1(); 
    er.simulate(); 
} // end main 

}

Patient.java：

package emergencyroomsimulator1;


import java.util.Date;



public class Patient implements Comparable<Patient> {
    protected int id;
protected String category;
protected Date timeArrived;

EmergencyRoomSimulator1 emg;
//protected Date CurrentTime;


// accessors and mutators

public int getID() {
    return id;   
}

public void setID(int idIn) {
    this.id = idIn;
}

public String getCategory() {
    return category;
}
public void setCategory(String categoryIn) {
    this.category = categoryIn;
}

public java.util.Date getTimeArrived() {
    return timeArrived;
}



public int compareTo(Patient other) {
    // This code doesn't handle nulls
    int result = getCategory().compareTo(other.getCategory());
    if (result == 0) {
        result = getTimeArrived().compareTo(other.getTimeArrived());
    }
    return result;
}

// default constructor
public Patient() {
    this.id = 0;
    this.category = "low"; // unclassified Patients go to the end of the queue
    this.timeArrived = new Date();
}

// overloaded constructor
public Patient(int idIn, String categoryIn) {
    this.id = idIn;
    this.category = categoryIn;
    this.timeArrived = new Date();
}


} 

PatientComparator.java：

package emergencyroomsimulator1;


import java.util.Comparator;


public class PatientComparator implements Comparator<Patient>{
    public int compare(Patient p1, Patient p2) {
       int result = p1.getCategory().compareTo(p2.getCategory());
    if (result == 0) {
        result = p1.getTimeArrived().compareTo(p2.getTimeArrived());
    }
    return result; 
    }
}

PatientQueue.java：

package emergencyroomsimulator1;
import java.util.Comparator;
import java.util.PriorityQueue;

public class PatientQueue {
    PriorityQueue pq;

    // default constructor
    public PatientQueue() {
        this.pq = new PriorityQueue<Patient>(1, new PatientComparator());
    }

    public void registerPatient(Patient p) {
        this.pq.add(p);
    } // end registerPatient method

    public Patient getNextPatient() {
        return (Patient) this.pq.poll();
    } // end getNextPatient method

}