Cant figure out what return type I need!

[Mitchel]

I'm kind of new to java & I'm trying to do a grade project called Grade.java Its suposed to make a grade book but I keep on geting 2 errors. Both say return type required. I put the error points in Bold, Italic & underlined

/**
 * Implementation class for the Student bean.
 *
 * <code><pre>
 * CREATE TABLE amber_many2many_map (
 *   grade_id INTEGER PRIMARY KEY auto_increment,
 *
 *   student_id INTEGER REFERENCES Student(student_id)
 *   course_id INTEGER REFERENCES Course(course_id)
 * );
 * </pre></code>
 */
@Entity
@Table(name="amber_many2many_map")
public class Grade3 {
  private long _id;
  private Student _student;
  private Course _course;
  private String _grade;
 
  public Grade()
  {
  }
 
 public Grade(Student student, Course course, String grade)
  {
    setStudent(student);
    setCourse(course);
    setGrade(grade);
  }
 
  /**
   * Gets the id.
   */
  @Id
  @Column(name="grade_id")
  @GeneratedValue
  public long getId()
  {
    return _id;
  }
 
  /**
   * Sets the id.
   */
  public void setId(long id)
  {
    _id = id;
  }
 
  /**
   * Gets the grade.
   */
  @Basic
  public String getGrade()
  {
    return _grade;
  }
 
  /**
   * Sets the grade.
   */
  public void setGrade(String grade)
  {
    _grade = grade;
  }
 
  /**
   * Returns the student.
   */
  @ManyToOne
  @JoinColumn(name="student_id", nullable=false, updatable=false)
  public Student getStudent()
  {
    return _student;
  }
 
  /**
   * Sets the student.
   */
  public void setStudent(Student student)
  {
    _student = student;
  }
 
  /**
   * Returns the course.
   */
  @ManyToOne
  @JoinColumn(name="course_id", nullable=false, updatable=false)
  public Course getCourse()
  {
    return _course;
  }
 
  /**
   * Sets the course.
   */
  public void setCourse(Course course)
  {
    _course = course;
  }
}
 

[r035198x]

I'm kind of new to java & I'm trying to do a grade project called Grade.java Its suposed to make a grade book but I keep on geting 2 errors. Both say return type required. I put the error points in Bold, Italic & underlined

/**
* Implementation class for the Student bean.
*
* <code><pre>
* CREATE TABLE amber_many2many_map (
* grade_id INTEGER PRIMARY KEY auto_increment,
*
* student_id INTEGER REFERENCES Student(student_id)
* course_id INTEGER REFERENCES Course(course_id)
* );
* </pre></code>
*/
@Entity
@Table(name="amber_many2many_map")
public class Grade3 {
private long _id;
private Student _student;
private Course _course;
private String _grade;
 
 public Grade()
{
}
 
 public Grade(Student student, Course course, String grade)
{
setStudent(student);
setCourse(course);
setGrade(grade);
}
 
/**
* Gets the id.
*/
@Id
@Column(name="grade_id")
@GeneratedValue
public long getId()
{
return _id;
}
 
/**
* Sets the id.
*/
public void setId(long id)
{
_id = id;
}
 
/**
* Gets the grade.
*/
@Basic
public String getGrade()
{
return _grade;
}
 
/**
* Sets the grade.
*/
public void setGrade(String grade)
{
_grade = grade;
}
 
/**
* Returns the student.
*/
@ManyToOne
@JoinColumn(name="student_id", nullable=false, updatable=false)
public Student getStudent()
{
return _student;
}
 
/**
* Sets the student.
*/
public void setStudent(Student student)
{
_student = student;
}
 
/**
* Returns the course.
*/
@ManyToOne
@JoinColumn(name="course_id", nullable=false, updatable=false)
public Course getCourse()
{
return _course;
}
 
/**
* Sets the course.
*/
public void setCourse(Course course)
{
_course = course;
}
}
 

Every method must have a return type unless it is a constructor. From your code your 2 methods are probably constructors. Now a constructor must have the same name as that of the class. So change the names of these 2 to public Grade3

[Mitchel]

Every method must have a return type unless it is a constructor. From your code your 2 methods are probably constructors. Now a constructor must have the same name as that of the class. So change the names of these 2 to public Grade3

I did that & now I'm geting 18 errors. I put the error points in Bold, Italic & underlined again.

/**
* Implementation class for the Student bean.
* <code><pre>
* CREATE TABLE amber_many2many_map (
* grade_id INTEGER PRIMARY KEY auto_increment,
* student_id INTEGER REFERENCES Student(student_id)
* course_id INTEGER REFERENCES Course(course_id)
* );
* </pre></code>
*/
 @Entity
//^Cannot Find Symbol
@Table(name="amber_many2many_map")
//^Cannot Find Symbol
public class Grade3 {
private long _id;
 private Student _student;
         //^Cannot Find Symbol
private Course _course;
          //^Cannot Find Symbol
private String _grade;
public Grade3()
{
}
 public Grade3(Student student, Course course, String grade)   
                    //^-------------------^Cannot Find Symbol
{
setStudent(student);
setCourse(course);
setGrade(grade);
}
/**
* Gets the id.
*/
 @Id
//^Cannot Find Symbol
@Column(name="grade_id")
//^Cannot Find Symbol
@GeneratedValue
//^Cannot Find Symbol
public long getId()
{
return _id;
}
/**
* Sets the id.
*/
public void setId(long id)
{
_id = id;
}
/**
* Gets the grade.
*/
 @Basic
//^Cannot Find Symbol
public String getGrade()
{
return _grade;
}
/**
* Sets the grade.
*/
public void setGrade(String grade)
{
_grade = grade;
}
/**
* Returns the student.
*/
 @ManyToOne
//^Cannot Find Symbol
@JoinColumn(name="student_id", nullable=false, updatable=false)
//^Cannot Find Symbol
public Student getStudent()
        //^Cannot Find Symbol
{
return _student;
} 
/**
* Sets the student.
*/
 public void setStudent(Student student)
                                //^Cannot Find Symbol
{
_student = student;
} 
/**
* Returns the course.
*/
 @ManyToOne
  //^Cannot Find Symbol
@JoinColumn(name="course_id", nullable=false, updatable=false)
 //^Cannot Find Symbol
public Course getCourse()
         //^Cannot Find Symbol
{
return _course;
}
/**
* Sets the course.
*/
 public void setCourse(Course course)
                              //^Cannot Find Symbol
{
_course = course;
}
}
 

[r035198x]

I did that & now I'm geting 18 errors. I put the error points in Bold, Italic & underlined again.

/**
* Implementation class for the Student bean.
* <code><pre>
* CREATE TABLE amber_many2many_map (
* grade_id INTEGER PRIMARY KEY auto_increment,
* student_id INTEGER REFERENCES Student(student_id)
* course_id INTEGER REFERENCES Course(course_id)
* );
* </pre></code>
*/
 @Entity
 //^Cannot Find Symbol
 @Table(name="amber_many2many_map")
 //^Cannot Find Symbol
public class Grade3 {
private long _id;
 private Student _student;
 //^Cannot Find Symbol
 private Course _course;
 //^Cannot Find Symbol
private String _grade;
public Grade3()
{
}
 public Grade3(Student student, Course course, String grade) 
 //^-------------------^Cannot Find Symbol
{
setStudent(student);
setCourse(course);
setGrade(grade);
}
/**
* Gets the id.
*/
 @Id
 //^Cannot Find Symbol
 @Column(name="grade_id")
 //^Cannot Find Symbol
 @GeneratedValue
 //^Cannot Find Symbol
public long getId()
{
return _id;
}
/**
* Sets the id.
*/
public void setId(long id)
{
_id = id;
}
/**
* Gets the grade.
*/
 @Basic
 //^Cannot Find Symbol
 public String getGrade()
{
return _grade;
}
/**
* Sets the grade.
*/
public void setGrade(String grade)
{
_grade = grade;
}
/**
* Returns the student.
*/
 @ManyToOne
 //^Cannot Find Symbol
 @JoinColumn(name="student_id", nullable=false, updatable=false)
 //^Cannot Find Symbol
 public Student getStudent()
 //^Cannot Find Symbol
{
return _student;
} 
/**
* Sets the student.
*/
 public void setStudent(Student student)
 //^Cannot Find Symbol
{
_student = student;
} 
/**
* Returns the course.
*/
 @ManyToOne
 //^Cannot Find Symbol
 @JoinColumn(name="course_id", nullable=false, updatable=false)
 //^Cannot Find Symbol
 public Course getCourse()
 //^Cannot Find Symbol
{
return _course;
}
/**
* Sets the course.
*/
 public void setCourse(Course course)
 //^Cannot Find Symbol
{
_course = course;
}
}
 

Do you have a class called Student? You are using it in the class Grade3 but the compiler does not know anything about it.
private Student _student;