Java 如何实施培训班

我有以下两门课：

public class Station{

    private String id;
    
    private String description;
    
    private boolean isTerminus;
    
    private int numberPassengersInTransit;
    
    public Station(String id, String desc) {
        this.id = id;
        description= desc;
    }

    public String getDescription() {
        return descrizione;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public boolean isTerminus() {
        return isTerminus;
    }

    public void setTerminus(boolean isTerminus) {
        this.isTerminus = isTerminus;
    }

    public String getId() {
        return id;
    }
    
    public int getNumberPassengersInTransit() {
        return numberPassengersInTransit;
    }
    
    public void addPassenger() {
        numberPassengersInTransit++;
    }
    
    public void addGroupPassengers(int num) {
        numberPassengersInTransit += num;
    }
}

及

运行这两个类时，会出现以下错误：

在增加一名乘客和一组乘客后，在途乘客数量必须保持一致。应为：但为：

第一次增加一组乘客后，在途乘客数量必须保持一致。应为：但为：

在增加一名乘客和一组乘客后，在途乘客数量必须保持一致。应为：但为：

如何修复上述三个错误？

public void addgrouppatients（int num）{
public void addGroupPassengers(int num) {
    
    if(numberPassengersOnBoard+num<NUMBER_MAX_PASSENGERS)
        numberPassengersOnBoard++;
    else
        System.out.println("Error");
    
}

如果（numberPassengersOnBoard+numDebug您的代码！从为什么不
AddGroupPassenger（）
使用
num
参数开始？“如何修复上述三个错误？”-您是否尝试过使用IDE的调试器？是否尝试过？它们将允许您确定测试失败的原因。然后（可能）修复它们只是想一想。你可能想检查一下如何使用调试器。
import static org.junit.Assert.*;

import org.junit.Before;
import org.junit.Test;

public class StationTest {
    
    private Station sta;
    
    @Before
    public void setUp() throws Exception {
        sta = new Station("STRM0001","Giardinetti");
    }

    @Test
    public void testConstructorStation() {
        assertEquals("The station id was not initialized correctly", 
                "STRM0001", sta.getId());
        assertEquals("The description from the station was not initialized correctly", 
                "Giardinetti", sta.getDescription());
        assertEquals("At creation the number of passengers in transit is 0.", 
                0, sta.getNumberPassengersInTransit());
    }

    @Test
    public void testAddPassenger() {
        sta.addPassenger();
        assertEquals("After adding a passenger for the first time, the number of passengers in transit must be 1.", 
                1, sta.getNumberPassengersInTransit());
    }
    
    @Test
    public void testAddGroupPassengers() {
        sta.addGroupPassengers(5);
        assertEquals("After adding a group of passengers for the first time, the number of passengers in transit must be consistent.", 
                5, sta.getNumberPassengersInTransit());
    }

    @Test
    public void testAddPassengerAndThenGroupPassengers() {
        sta.addPassenger();
        sta.addGroupPassengers(3);
        assertEquals("After adding a passenger and then a group of passengers" +
        " the number of passengers in transit must be consistent.", 
                4, sta.getNumberPassengersInTransit());
    }
    
    @Test
    public void testAggiungiGruppoPasseggeriEPoiPasseggero() {
        sta.addGroupPassengers(2);
        sta.addPassenger();
        assertEquals("After adding a passenger and then a group of passengers" +
        " the number of passengers in transit must be consistent.", 
                3, sta.getNumberPassengersInTransit());
    }
}




import static org.junit.Assert.*;

import org.junit.Before;
import org.junit.Test;

public class TrenoTest {
    
    private Train trainTest;
    private Station stationTest;
    
    @Before
    public void setUp() throws Exception {
        trainTest = new Train("testRM001", "Yellow arrow", stationTest);
    }

    @Test
    public void testConstructorTrain() {
        assertEquals("L'id from the train was not initialized correctly", 
                "testRM001", trainTest.getId());
        assertEquals("The description from the train was not initialized correctly", 
                "Yellow arrow", trainTest.getDescription());
        assertEquals("The train station was not initialized correctly. ", 
                stationTest, trainTest.getParkingPlace());
    }

    @Test
    public void testRuns() {
        Station st1 = new Station("STRM0001","Giardinetti");
        trainTest.setParkingPlace(st1);
        Station st2 = new Station("STRM0002","Termini");
        assertEquals("The departure station does not coincide with the train station.", 
                st1, trainTest.getParkingPlace());
        trenoTest.effettuaCorsa(st2);
        assertEquals("The arrival station does not coincide with the train station.", 
                st2, trainTest.getParkingPlace());
        String log = "The testRM001 train travels from Giardinetti station to Termini station.";
        assertEquals("The log does not report correct information.", log, trainTest.getLog());
    }
    
    @Test
    public void testAddPassenger() {
        trainTest.addPassenger();
        assertEquals("After adding a passenger for the first time, the number of passengers in transit must be 1.", 
                1, trainTest.getNumberPassengersOnBoard());
    }
    
    @Test
    public void testAddGroupPassengers() {
        trainTest.addGroupPassengers(5);
        assertEquals("After adding a group of passengers for the first time, the number of passengers in transit must be consistent.", 
                5, trainTest.getNumberPassengersOnBoard());
    }

    @Test
    public void testAddPassengerAndThenGroupPassengers() {
        trainTest.addPassenger();
        trainTest.addGroupPassengers(3);
        assertEquals("After adding a passenger and then a group of passengers" +
        " the number of passengers in transit must be consistent.", 
                4, trainTest.getNumberPassengersOnBoard());
    }
    
    @Test
    public void testAddGroupPassengersAndThenPassenger() {
        trainTest.addGroupPassengers(2);
        trainTest.addPassenger();
        assertEquals("After adding a passenger and then a group of passengers " +
        " the number of passengers in transit must be consistent.", 
                3, trainTest.getNumberPassengersOnBoard());
    }
}

public void addGroupPassengers(int num) {
    
    if(numberPassengersOnBoard+num<NUMBER_MAX_PASSENGERS)
        numberPassengersOnBoard++;
    else
        System.out.println("Error");
    
}

public void addGroupPassengers(int num) {

    if(numberPassengersOnBoard+num<NUMBER_MAX_PASSENGERS)
        numberPassengersOnBoard+= num;
    else
        System.out.println("Error");

}