測試文件錯誤

Question

我有2個子類和一個超類。我嘗試運行測試文件但不工作。任何建議？

錯誤：https://i.imgur.com/ciG9EPF.png

第一個文件，超類（單人牀=人）

package proj; 

public class persoana { 

    private String name, address, phone, email; 

    public persoana(){ 
    } 

    public persoana(String name, String address, String phone, String email) { 
     this.name = name; 
     this.address = address; 
     this.phone = phone; 
     this.email = email; 
    } 

    public String getName(){ 
     return name; 
    } 

    public void setName(String name){ 
     this.name = name; 
    } 

    public String getAddress(){ 
     return address; 
    } 

    public void setAddress(String address){ 
     this.address = address; 
    } 

    public String getPhone(){ 
     return phone; 
    } 

    public void setPhone(String phone){ 
     this.phone = phone; 
    } 

    public String getEmail(){ 
     return phone; 
    } 

    public void setEmail(String email){ 
     this.email = email; 
    } 

} 

文件2是僱員，對於單人牀亞類：

package proj; 

public class employee extends persoana{ 

    private String office, salary; 

    public employee(){ 
    } 

    public employee(String office, String salary){ 
     this.office = office; 
     this.salary = salary; 
    } 

    public String office(){ 
     return office; 
    } 

    public void setOffice(String office){ 
     this.office = office; 
    } 

    public String getSalary(){ 
     return salary; 
    } 

    public void setSalary(String salary){ 
     this.salary = salary; 
    } 

} 

文件3，類的子類persoana：

package proj; 

public class student extends persoana{ 

    private String bac, adm; 

    public student(){ 
    } 

    public student(String bac, String adm){ 
     this.bac = bac; 
     this.adm = adm; 
    } 

    public String bac(){ 
     return bac; 
    } 

    public void setBac(String bac){ 
     this.bac = bac; 
    } 

    public String getAdm(){ 
     return adm; 
    } 

    public void setAdm(String adm){ 
     this.adm = adm; 
    } 

} 

在哪裏出現在6號線2級的錯誤和7

package proj; 

public class test { 

    public static void main(String[] args) { 
     persoana persoana= new persoana ("John", "Somewhere", "415", 
"john@somewhere.com"); 
     persoana student= new student("Jane", "School Street", "650", "mj@abc.com"); 
     persoana employee= new employee ("Tom ", "Street", "408", "asd"); 

     System.out.println(persoana.toString() + "\n"); 
     System.out.println(student.toString() + "\n"); 
     System.out.println(employee.toString() + "\n"); 
    } 

} 

Answer 1

你student類不提供構造函數（和constructor are not inherited類似方法）的測試文件。

您需要提供它。

public student(String name, String address, String phone, String email){ 
    super(name, adress, phone, email); 
} 

請注意，類shoud以大寫字母開頭。