[电流输出] [1] 需要知道为什么薪水是正确的打印输出120000/12，但执行和每小时类打印完全相同的双值它从员工文本文件[staff] [2]读取。问题UML看起来像这样[问题UML] [3] 想知道我是否在Hourly和Executive课程中正确使用Super关键字 ************************************************** *********
//Driver class reads from staff.txt file
import java.io.File;
import java.util.Scanner;
public class StaffDemo{
private static int size;
private static String[][] employeeInfo;
private static StaffMember[] staffMember;
public static void main(String[] args){
createStaff();
//System.out.println(staffMember[3].getPaid());
payAll();
}
public static void createStaff(){
try{
File file = new File("staff.txt");
Scanner s = new Scanner(file);
size = Integer.parseInt(s.next());
//System.out.println(size);
employeeInfo = new String[size][5];
for(int i =0;i<size;i++){
for(int j=0;j<5;j++){
employeeInfo[i][j]=s.next();
}
}
int i=0;
staffMember = new StaffMember[size];
while(i<size){
if(employeeInfo[i][0].equals("Salaried")){
StaffMember staffSalaried = new Salaried(Integer.parseInt(employeeInfo[i][1]),employeeInfo[i][2],employeeInfo[i][3],Double.valueOf(employeeInfo[i][4]));
staffSalaried.setEmployeeType(employeeInfo[i][0]);
staffMember[i] = staffSalaried;
}else if(employeeInfo[i][0].equals("Volunteer")){
StaffMember staffVolunteer = new Volunteer(Integer.parseInt(employeeInfo[i][1]),employeeInfo[i][2],employeeInfo[i][3],Double.valueOf(employeeInfo[i][4]));
staffVolunteer.setEmployeeType(employeeInfo[i][0]);
staffMember[i] = staffVolunteer;
}else if(employeeInfo[i][0].equals("Hourly")){
StaffMember staffHourly = new Volunteer(Integer.parseInt(employeeInfo[i][1]),employeeInfo[i][2],employeeInfo[i][3],Double.valueOf(employeeInfo[i][4]));
staffHourly.setEmployeeType(employeeInfo[i][0]);
staffMember[i] = staffHourly;
}else if(employeeInfo[i][0].equals("Executive")){
StaffMember staffExecutive = new Volunteer(Integer.parseInt(employeeInfo[i][1]),employeeInfo[i][2],employeeInfo[i][3],Double.valueOf(employeeInfo[i][4]));
staffExecutive.setEmployeeType(employeeInfo[i][0]);
staffMember[i] = staffExecutive;
}
i++;
}
}
catch(Exception e){
System.out.println("no file found");
}
}
public static void payAll(){
for(int k=0;k<size;k++)
System.out.println(staffMember[k]);
}
}
*******************************************************************************
//Executive class extends Salaried, suppose to add 0.1*payRate*bonus
public class Executive extends Salaried{
private double bonus=0;
private double monthlySalary;
public Executive(int idNumber, String firstName, String lastName, double payRate){
super(idNumber,firstName,lastName, payRate);
this.setMonthlyRate();
}
public void setMonthlyRate(){
this.monthlySalary=super.payRate*0.1*bonus;
}
public double getMonthlyRate(){
return this.monthlySalary;
}
public void addBonus(double bonus){
this.bonus+=bonus;
}
public double getBonus(){
return this.bonus;
}
@Override
public double getPaid(){
return this.getMonthlyRate();
}
@Override
public String toString(){
return super.toString()+this.getPaid();
}
}
********************************************************************************
// volunteer class prints out payrate equals zero
public class Volunteer extends StaffMember{
private double payRate;
public Volunteer(int idNumber, String firstName, String lastName, double payRate){
super(idNumber,firstName,lastName);
this.setMonthlyRate(payRate);
}
public void setMonthlyRate(double payRate){
this.payRate=payRate;
}
public double getMonthlyRate(){
return this.payRate;
}
@Override
public double getPaid(){
return getMonthlyRate();
}
public String toString(){
return super.toString()+getPaid();
}
}
********************************************************************************
//Hourly class extends StaffMember, it suppose to do payRate*80.00
public class Hourly extends StaffMember{
private double payRate;
public Hourly(int idNumber, String firstName, String lastName, double payRate){
super(idNumber,firstName,lastName);
this.setMonthlyRate(payRate);
}
public void setMonthlyRate(double payRate){
this.payRate=payRate*80.00;
}
public double getMonthlyRate(){
return this.payRate;
}
@Override
public double getPaid(){
return getMonthlyRate();
}
@Override
public String toString(){
return super.toString()+getMonthlyRate();
}
}
********************************************************************************
//salaried
public class Salaried extends StaffMember{
public double payRate;
public Salaried(int idNumber, String firstName, String lastName, double payRate){
super(idNumber, firstName, lastName);
this.setMonthlyRate(payRate);
}
public double getMonthlyRate(){
return this.payRate;
}
public void setMonthlyRate(double payRate){
this.payRate=payRate/12.00;
}
@Override
public double getPaid(){
return getMonthlyRate();
}
public String toString(){
return super.toString()+getMonthlyRate();
}
}
********************************************************************************
//StaffMember is abstract class
public abstract class StaffMember{
private String firstName;
private String lastName;
private int idNumber;
private String employeeType;
public StaffMember(int idNumber, String firstName, String lastName){
this.idNumber=idNumber;
this.firstName=firstName;
this.lastName=lastName;
}
public int getIdNumber(){
return this.idNumber;
}
public void setIdNumber(int idNumber){
this.idNumber=idNumber;
}
public String getFirstName(){
return this.firstName;
}
public void setFirstName(String firstName){
this.firstName=firstName;
}
public String getLastName(){
return this.lastName;
}
public void setLastName(String lastName){
this.lastName=lastName;
}
public String getEmployeeType(){
return this.employeeType;
}
public void setEmployeeType(String employeeType){
this.employeeType=employeeType;
}
@Override
public String toString(){
return getFirstName()+" "+getLastName()+" ("+getEmployeeType()+"): $";
}
public abstract double getPaid();
public abstract double getMonthlyRate();
public abstract void setMonthlyRate(double i);
}
[1]: https://i.stack.imgur.com/rF54p.png
[2]: https://i.stack.imgur.com/ohblq.png
[3]: https://i.stack.imgur.com/UezAe.png
答案 0 :(得分：0)
你确定“每小时”和“执行”都是志愿者吗？
否则if（employeeInfo [i] [0] .equals（“Hourly”））{
StaffMember staffHourly = new 志愿者（...）
...
否则if（employeeInfo [i] [0] .equals（“Executive”））{
StaffMember staffExecutive = new 志愿者（...）