Inheritance Buku

//filename TestInheritance.java
public class TestInheritance {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Teks t1 = new Teks();
        t1.setTing(5);
        int t=t1.getTing();
        t1.setTajuk("Sejarah");
        String tajuk=t1.getTajuk();
    }
}//class main

class Buku{
    private String tajuk;
    private String ISBN;
    private double harga;
    private String pengarang;
    private String penerbit;

    public String getTajuk(){
        return pengarang;
    }
    public void setTajuk(String tajukbuku){
        tajuk=tajukbuku;
    }
}//end class Buku

class Teks extends Buku{
    private int tingkatan;
    public int getTing(){
        return tingkatan;
    }
    public void setTing(int ting){
        tingkatan=ting;
    }
}//end subclass Teks

class Cerpen extends Buku{
    private String genre;
    public String getGenre(){
        return genre;
    }
    public void setGenre(String gen){
        genre=gen;
    }
}//end subclass Cerpen