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Thread: Problem with inheritance

  1. #1
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    Default Problem with inheritance

    public abstract class Member
    {
        private String membername;
        private int membermembershipYear;
        private char membergender;
        private char membertype;
        private int memberid;
     
        public Member(String name,int membershipYear, char gender, char type, int id)
        {
            membername = name;
            membermembershipYear = membershipYear;
            membergender = gender;
            membertype = type;
            memberid = id;
        }
     
        public String getname()
        {
            return membername;
        }
     
        public int getmembershipYear()
        {
            return membermembershipYear;
        }
     
        public char getgender()
        {
     
            return membergender;
        }
     
        public int getid()
        {
            return memberid;
        }
     
        public void setname(String nameIn)
        {
            membername = nameIn;
        }
     
        public void setmembershipYear(int membershipYearIn)
        {
            membermembershipYear = membershipYearIn;
        }
     
        public void setgender(char genderIn)
        {
            membergender = genderIn;
        }
     
        public void setid(int idIn)
        {
            memberid = idIn;
        }
     
        public String printDetails()
        {
           String allDetails;
           allDetails = "Name:" + membername
                         +"Membership Year:" + membermembershipYear
                         +"Gender(M or F):" + membergender
                         +"Type(A ot J):" + membertype
                         +"ID:" + memberid;
            return allDetails;
        }
    }


    public class JuvenileMember extends Member
    {
        private int parentGuardianId;
        private int yearOfBirth;
        private String medicalNotes;
     
        public JuvenileMember(String id,String Name, int membershipYear,char gender,Member parentGuardian,int yearOfBirth, String medicalNotes)
        {
            super(id, membershipYear, gender);
            parentGuardianId = MemberparentGuardian;
            yearOfBirth = yearOfBirth;
            medicalNotes = medicalNotes;
        }
    }


    --- Update ---

    my problem is with my variables id , membership and gender in the sub class

    Error comes up " cannot find symbol - constructor Member (java.lang.String,int,char)
    Gratefull for any help
    Last edited by jps; August 16th, 2013 at 03:31 PM. Reason: code tags


  2. #2
    Administrator copeg's Avatar
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    Default Re: Problem with inheritance

    For future reference please wrap your code in the code tags to preserve formatting (see Announcements - What's Wrong With My Code? )

    The error stats that the compiler cannot find that constructor. Take a close look at the Member class constructor, and how the line that throws the error is calling it: you've only got one constructor for the Member class and it accepts 5 parameters (whereas the JuvenileMember class tries to use a 3 parameter constructor)

  3. #3
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    Default Re: Problem with inheritance

    I am confused do could you explain ??does it have to be a 5 parameter constructor to work ?

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    Default Re: Problem with inheritance

    Quote Originally Posted by barry1888 View Post
    does it have to be a 5 parameter constructor to work ?
    It has to be able to find the Constructor to be able to call it. A 5 parameter constructor is not the same as a 3 parameter constructor.

    Suggested reading: Providing Constructors for Your Classes (The Java™ Tutorials > Learning the Java Language > Classes and Objects)

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