沒有出現在終端窗口java中的語句

Question

這是測試者類，終端窗口只顯示從行

System.out.println ("Waiting position for patient3: " + daylog.findWaitingPosition (patient3));

我在下面的代碼中提到了（向下滾動一點以查看我的文字）。 它上面沒有顯示任何東西，有人知道為什么嗎？

import java.text.DecimalFormat;

public class DayLogTest
{
public static void main (String[] args)
{
    DayLog today = new DayLog (11,12,1992);

    doTest(today);
}

private static void doTest (DayLog daylog)
{
    Patient patient1 = new Patient(1111, "aaaa", "aaaa", 11,11,1991);
    Patient patient2 = new Patient(2222, "bbbb", "bbbb", 9,12,1992);
    Patient patient3 = new Patient(3333, "cccc", "cccc", 8,7,1941);
    Patient patient4 = new Patient(4444, "dddd", "dddd", 4,5,1851);
    Patient patient5 = new Patient(5555, "eeee", "eeee", 1,1,1231);

    System.out.println ("Test 1");
    System.out.println ("------------------------------------------------------------");
    System.out.println ("Phase 1: Adding Patients (patient1, patient2, patient3) ");
    daylog.addPatient (patient1, 12,30);
    daylog.addPatient (patient2, 12,40);
    daylog.addPatient (patient3, 8,40);
    System.out.println ("Number of Patients Arrived: " + daylog.getArrived());
    System.out.println ("Number of Patients Waiting: " + daylog.getNumberWaiting());
    System.out.println ("Waiting position for patient1: " + daylog.findWaitingPosition (patient1));
    System.out.println ("Waiting position for patient2: " + daylog.findWaitingPosition (patient2));
    System.out.println ("Waiting position for patient3: " + daylog.findWaitingPosition (patient3));
    System.out.println ("------------------------------------------------------------");
    System.out.println ("Treating patient1");
    daylog.treatPatient (patient1, 15, 30);
    System.out.println ("Number of Patients Waiting: " + daylog.getNumberWaiting());
    System.out.println ("Waiting position for patient2: " + daylog.findWaitingPosition (patient2));

DOES NOT PRINT ANYTHING ABOVE HERE IN TERMINAL WINDOW
DOES NOT PRINT ANYTHING ABOVE HERE IN TERMINAL WINDOW
DOES NOT PRINT ANYTHING ABOVE HERE IN TERMINAL WINDOW


    System.out.println ("Waiting position for patient3: " + daylog.findWaitingPosition (patient3));
    System.out.println ("------------------------------------------------------------");
    System.out.println ("Phase 2: Adding patient4 and patient 5");
    daylog.addPatient (patient4, 5,25);
    daylog.addPatient (patient5, 16,24);
    System.out.println ("Number of Patients Arrived: " + daylog.getArrived());
    System.out.println ("Number of Patients Waiting: " + daylog.getNumberWaiting());
    System.out.println ("Waiting position for patient2: " + daylog.findWaitingPosition (patient2));
    System.out.println ("Waiting position for patient3: " + daylog.findWaitingPosition (patient3));
    System.out.println ("Waiting position for patient4: " + daylog.findWaitingPosition (patient4));
    System.out.println ("Waiting position for patient5: " + daylog.findWaitingPosition (patient5));
    System.out.println ("------------------------------------------------------------");
    System.out.println ("Treating patient 3 and 5");
    daylog.treatPatient (patient3, 11,40);
    daylog.treatPatient (patient5, 19,24);
    System.out.println ("Number of Patients Arrived: " + daylog.getArrived());
    System.out.println ("Number of Patients Waiting: " + daylog.getNumberWaiting());
    System.out.println ("Waiting position for patient2: " + daylog.findWaitingPosition (patient2));
    System.out.println ("Waiting position for patient4: " + daylog.findWaitingPosition (patient4));
    System.out.println ("------------------------------------------------------------");
    System.out.println ("Phase 3: printReport method");
    daylog.printReport();
    System.out.println ("------------------------------------------------------------");
    System.out.println ("Phase 4: printWaitingList Method");
    daylog.printWaitingList();
    System.out.println ("------------------------------------------------------------");
    System.out.println ("Phase 5: getAverageWaitingTime Method");
    System.out.println ("I have designed the test to be 3 hours average so far, which is 180 minutes");
    DecimalFormat fmt = new DecimalFormat ("");
    System.out.println ("Average waiting time: " + fmt.format(daylog.getAverageWaitingTime()) + " minutes");
    System.out.println ("------------------------------------------------------------");
    System.out.println ("Phase 6: Adding patient2");
    daylog.treatPatient (patient2, 20, 40);
    System.out.println ("Number of Patients Arrived: " + daylog.getArrived());
    System.out.println ("Number of Patients Waiting: " + daylog.getNumberWaiting());
    System.out.println ("Waiting position for patient2: " + daylog.findWaitingPosition (patient1));
    System.out.println ("Waiting position for patient2: " + daylog.findWaitingPosition (patient2));
    System.out.println ("Waiting position for patient3: " + daylog.findWaitingPosition (patient3));
    System.out.println ("Waiting position for patient4: " + daylog.findWaitingPosition (patient4));
    System.out.println ("Waiting position for patient5: " + daylog.findWaitingPosition (patient5));

  }
}

如果需要，供參考，DayLog Class 和 Patient class

public class DayLog
{
private Date logDate;

private int noOfArrivals = 0;

//Number of waiting patients, different from number of arrived.
private int noOfWaiting = 0;
//Number of patients being treated
private int noOfTreated = 0;

//Sets the size of the waitinglist and treatmentlist arrays
private int waitingListCapacity = 100;
private int treatmentListCapacity = 100;

//Waitlist position for the method findWaitingPosition which is one more than the index.
private int waitlistPosition;

private Patient[] waitingList;
private Patient[] treatmentList;

public DayLog (int day, int month, int year)
{
    logDate = new Date (day, month, year);

    waitingList = new Patient[waitingListCapacity];
    treatmentList = new Patient[treatmentListCapacity];
}

public void addPatient (Patient patient, int hours, int minutes)
{
    patient.setArrivalTime (hours, minutes);

    noOfArrivals++;

    for (int i = 0; i <= waitingList.length-1; i++)
    {
        if ( waitingList[i] == null )
        {
            waitingList[i] = patient;
            noOfWaiting++;
            return;
        }
    }

}

public int getArrived ()
{
    return noOfArrivals;
}

public int getNumberWaiting ()
{
    return noOfWaiting;
}

public int findWaitingPosition (Patient patient)
{
    for ( int i=0; i <= waitingList.length-1; i++)
    {
        if ( waitingList[i] == patient )
        {
            waitlistPosition = i+1;
            return waitlistPosition;
        }
    }

    return -1;
}

public void treatPatient (Patient patient, int hours, int minutes)
{
    for (int i = 0; i <= waitingList.length-1; i++)
    {
        if (waitingList[i] == patient)
        {
            patient.setTreatmentStart (hours, minutes);
            treatmentList[noOfTreated] = patient;
            noOfTreated++;

            for (int j=i; j < noOfWaiting-1; j++ )
            {
                waitingList[j] = waitingList[j+1];
            }

            waitingList[noOfWaiting-1] = null;
            noOfWaiting--;
        }
    }

}

public void printReport ()
{
     System.out.println ("Number of patients arrived: " + noOfArrivals); 
     System.out.println ("Number of patients waiting: " + noOfWaiting ); 
     System.out.println ("Number of being treated: " + noOfTreated);


}

public void printWaitingList ()
{
    for (int i = 0; i <= waitingList.length-1; i++)
    {
        if ( waitingList[i] == null )
        {
        }
        else
        {
            waitingList[i].getAsString();
        }
    }

}

public void printTreatmentList ()
{
    for (int i = 0; i <= treatmentList.length-1; i++)
    {
        if ( treatmentList[i] == null )
        {
        }
        else
        {
            treatmentList[i].getAsString();
        }
    }
}

public double getAverageWaitingTime ()
{
    int sum = 0;
    int count = 0;
    double averageWaitingTime;
    for (int i = 0; i <= treatmentList.length-1; i++)
    {
        if ( treatmentList[i] == null )
        {
        }
        else
        {
            sum += treatmentList[i].getWaitingTime();
            count++;
        }
    }

    averageWaitingTime = (sum / count);
    return averageWaitingTime;

}
          }

病人班

public class Patient
{
private int patientRefNo;
private String patientName;
private String patientGp;

private Date patientBirthday;

private Time patientArrivalTime;
private Time patientTreatmentTime;

public Patient (int refNo, String name, String gp, int day, int month, int year)
{
    patientRefNo = refNo;
    patientName  = name;
    patientGp    = gp;

    patientBirthday = new Date(day, month, year);

    patientArrivalTime = null;
    patientTreatmentTime = null;

}

protected void setArrivalTime (int hours, int minutes)
{
    patientArrivalTime = new Time (hours, minutes);
}

protected void setTreatmentStart (int hours, int minutes)
{
    patientTreatmentTime = new Time (hours, minutes);
}

public int getPatientNo ()
{
    return patientRefNo;
}

public String getGPName ()
{
    return patientGp;
}

public Date getDOB ()
{
    return patientBirthday;
}

public int getWaitingTime ()
{
    if ( patientArrivalTime == null || patientTreatmentTime == null )
    {

        return -1;
    }
    else
    {

        return patientTreatmentTime.getElapsedTime (patientArrivalTime);
    }
}

public String getAsString ()
{

   System.out.println ("Patient Name: " + patientName);
   System.out.println ("Patient Reference Number: " + patientRefNo);
   System.out.println ("Patient Family Doctor: " + patientGp);
   System.out.println ("Patient Birthday: " + patientBirthday.getAsString());

   if ( patientArrivalTime == null )
   {
       System.out.println ("Patient Arrival Time: this patient has not arrived yet");
   }
   else 
   {
        System.out.println ("Patient Arrival Time: " + patientArrivalTime.getAsString());
   }

   if ( patientTreatmentTime == null )
   {
       System.out.println ("Patient Treatment Time: this patient has not been treated yet");
   }
   else
   {
       System.out.println ("Patient Arrival Time: " + patientTreatmentTime.getAsString());
   }


   return "";
}




}

Answer 1

很難測試所有內容（因為據我所知，您有自定義的Date和Time類未包含在此處），但是如果我冒險猜測一下，窗口是否有可能打印出所有這些語句，但是有這么多，你看不到頂部的？

如果只有部分System.out.println的工作會很奇怪； 嘗試注釋掉最后打印的一些內容，並檢查您是否可以看到"Waiting position for patient3"之前的任何輸出。