下面是我写的程序   看看哪里不对
public class Student {
    int studentId;
    String studentName;
    int courseNum;
    int averageScore;
    int creditHour;
    static int nextId;
    Student(String studentName){
        this.studentName=studentName;
        this.studentId=nextId;
        this.courseNum=0;
        this.averageScore=0;
        this.creditHour=0;
    }
    int getstudentId(){
        return studentId;
    }
    String getstudentName(){
        return studentName;
    }
    int getcourseNum(){
        return courseNum;
    }
    int getaverageScore(){
        return averageScore;
    }
    int getcreditHour(){
        return creditHour;
    }
    void setcourseNum(int courseNum){
        this.courseNum=courseNum;
    }
    void setaverageScore(int averageScore){
        this.averageScore=averageScore;
    }
    void setcreditHour(int creditHour){
        this.creditHour=creditHour;
    }
    void print(){
        System.out.println(studentId+" "+studentName+" "+courseNum+" "+averageScore+" "+creditHour+" "+nextId);
    }
}