I have three class. In first class i have get and set methods, in second class i have a list of objects of first class then after main class i want to read the objects values but it will shows only the memory allocation by the object not given the class object values. my classes is like that--->

1st class:- public class preAuthor { private long id; private String name; public preAuthor(String name){ } public long getId() { return id; } public void setId(long id) { this.id = id; }
public String getName() { return name; } public void setName(String list) { this.name = list; } }

2nd class-->
import java.util.List;
public class Author{
private List<preAuthor> preAuth;
    public List<preAuthor> getAuthor() {
        return preAuth;
    }
    public void setAuthor(List<preAuthor> preAuth) {
        this.preAuth = preAuth;
    }
}

Main class:-
public class mainclass{
     public static void main(String args[]) {
     preAuthor auth=new preAuthor(null);
        auth.setName("sud");
        auth.setName("shekhar");
        ArrayList<preAuthor> lst=new ArrayList<preAuthor>();
        lst.add(auth);

        Author au=new Author();
        au.setAuthor(lst);

        Iterator<preAuthor> itr=au.getAuthor().iterator();
        while(itr.hasNext()){
            System.out.println(itr.next());
        } 
    }
}

please help me to get the values. Thanks