수다닷컴

혼자 하다 1시간 정도 고민하다 답이 안 나와서질문합니다. 상속에대한 공부 부분에서 푸는건데 에러가 나서요

자세히 보실 필요없이... 아래 에러부 첨부해 놨는데 보시면 아실거 같내요..

그럼 부탁드리겠습니다.class CollegeStudent
{
String Name;
int Number;
String Department;
int Grade;
int EarnedCredits;
public CollegeStudent(String Name, int Number, String Department, int Grade, int EarnedCredits )
{
setName(Name);
setNumber(Number);
setDepartment(Department);
setGrade(Grade);
setEarnedCredits(EarnedCredits);
}
public String getName()
{
return Name;
}
public int getNumber()
{
return Number;
}
public String getDepartment()
{
return Department;
}
public int getGrade()
{
return Grade;
}
public int getEarnedCredits()
{
return EarnedCredits;
}
public void setName(String Name)
{
this.Name = Name;
}
public void setNumber(int Number)
{
this.Number = Number;
}
public void setDepartment(String Department)
{
this.Department = Department;
}
public void setGrade(int Grade)
{
this.Grade = Grade;
}
public void setEarnedCredits(int EarnedCredits)
{
this.EarnedCredits = EarnedCredits;
}
public String toString()
{
return(학생이름 : + this.Name + \n + 학번 : + this.Number + \n + this.Department + \n+ 학년 : + this.Grade + \n + 이수학점 : + this.EarnedCredits + /n);
}
}
class UnderStudent extends CollegeStudent
{
int EarnedCredits;
String ClubName;
public UnderStudent(String Name, int Number, String Department, int Grade, int EarnedCredits, String ClubName)
{
super.Name = Name;
super.Number = Number;
super.Department = Department;
super.Grade = Grade;
super.EarnedCredits = EarnedCredits;
}
public String getClubName()
{
return(ClubName);
}
public void setClubName(String ClubName)
{
this.ClubName = ClubName;
}
public String toString()
{
return(super.toString + 동아리 이름 : + this.ClubName + \n);
}
}
class GraduateStudent extends CollegeStudent
{
String AssistentType;
double PayRate;
public GraduateStudent(String Name, int Number, String Department, int Grade, int EarnedCredits, String AssistentType, double PayRate)
{
super.Name = Name;
super.Number = Number;
super.Department = Department;
super.Grade = Grade;
super.EarnedCredits = EarnedCredits;
}
public String getAssistentType()
{
return(AssistentType);
}
public double getPayRate()
{
return(PayRate);
}
public void setAssistentType(String AssistentType)
{
this.AssistentType = AssistentType;
}
public void setPayRate(double PayRate)
{
this.PayRate = PayRate;
}
public String toString()
{
return(super.toString + 조교유형 : + this.AssistentType + \n + 장학금 비율 : + this.PayRate + \n);
}
}
class Driver
{
public static void main(String[] argv)
{
CollegeStudent student1 = new CollegeStudent(세리, 9024729, 체육, 4, 135);
UnderStudent student2 = new UnderStudent(지은, 9320985, 체육, 1, 18, 골프);
GraduateStudent student3 = new GraduateStudent(경주, 8014832, 체육, 2, 24, 강의 조교, 1.0d);
System.out.println(student1.toString());
System.out.println(student2.toString());
System.out.println(student3.toString());
}
}
여기부터 에러부...
CollegeStudent.java:66: cannot find symbol
symbol : constructor CollegeStudent()
location: class CollegeStudent
{
^
CollegeStudent.java:83: cannot find symbol
symbol : variable toString
location: class CollegeStudent
return(super.toString + 동아리 이름 : + this.ClubName + \n);
&nbsbsp; ^
CollegeStudent.java:91: cannot find symbol
symbol : constructor CollegeStudent()
location: class CollegeStudent
{
^
CollegeStudent.java:116: cannot find symbol
symbol : variable toString
location: class CollegeStudent
return(super.toString + 조교유형 : + this.AssistentType + \n + 장학
금 비율 : + this.PayRate + \n);
^
4 errors에디가 에러인지 모르겠네요...

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