import java.net.MalformedURLException; 
 import java.net.URL; 
 import java.util.HashSet; 
 import java.util.Set; 
  
 public class Test1 { 
     private static final String[] URL_NAMES = { 
             "http://javapuzzlers.com", 
             "http://apache2-snort.skybar.dreamhost.com", 
             "http://www.google.com", 
             "http://javapuzzlers.com", 
             "http://findbugs.sourceforge.net", 
             "http://www.cs.umd.edu" 
         }; 
  
     public static void main(String[] args) throws MalformedURLException { 
         Set <URL> favorites = new HashSet <URL>(); 
         for (String urlName : URL_NAMES) 
             favorites.add(new URL(urlName)); 
         System.out.println(favorites.size()); 
     } 
 }

import java.util.Random;

public class Test2 {
    public static void main(String[] args) {
        Random rnd = new Random();
        boolean toBe = rnd.nextBoolean();
        Number result = (toBe || !toBe) ?
                new Integer(3) : new Float(1);
        System.out.println(result);
    }
}

public Student get(Serializable id) {
    return (Student)getHibernateTemplate().load(Student.class, id);
}
public List<Student> getAll() {
    return (List<Student>)getHibernateTemplate().loadAll(Student.class);
}
public void save(Student stu) {
    getHibernateTemplate().saveOrUpdate(stu);
}
public void remove(Student stu) {
    getHibernateTemplate().delete(stu);
}
public void update(Student stu) {
    getHibernateTemplate().update(stu);
}