db4o - weird characters when retrieving objects

import java.io.File;
import com.db4o.Db4o;
import com.db4o.Db4oEmbedded;
import com.db4o.ObjectContainer;
import com.db4o.ObjectSet;
import com.db4o.query.Query;

public class Student {

private String name;

public AlumnoBDOO(String name){
    this.name = name;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public static void main(String[] args) {
    ObjectContainer bd = Db4oEmbedded.openFile("students.db4o");
    try {

        Student s1 = new Student("Carl");
        bd.store(s1)
        showStudents(bd);

       } catch (Exception e) {
           e.printStackTrace();
       } finally {
           bd.close();
       }
    }

public static void showResult(ObjectSet rs){
    System.out.println("Retrieved "+rs.size()+" objects");
    while(rs.hasNext()){
        System.out.println(rs.next());
    }
}

public static void showStudents(ObjectContainer bd){
    Query query = bd.query();
    query.constrain(Student.class);
    query.descend("name");
    ObjectSet rs = query.execute();
    showResult(rs);
}

}

I just simply want to store a Student in the db4o database but when I want to retrieve all of them it outputs like this:

Student@61070a02

I'm using Eclipse Juno and db40 v.8.0 which I already added as external jar. Why am I getting those weird characters instead of "Carl"?

That is not weired, but the default implementation of the toString() method. To get meaningfull information you should override this method in your Student class.