class Cualquierexcepcion extends Exception{
	public Cualquierexcepcion(){}
	public Cualquierexcepcion(String mssg){
		super(mssg);
	}
}
//estas son checked exceptions?

Patter compile p = Pattern.compile("");
Matcher m = p.matcher(string);
if(!m.find()){
	throw new CreationException();
}

	//Main Class extends Comparable
 	@Override
	public boolean equals(Object o) {
		if (o instanceof Alumnos) {
    		Alumnos p = (Alumnos)o;
    		return this.name.equals(p.name);
  		} else
    		return false;
  	}

 	@Override
	public int hashCode() {
 	 return age * this.name.length();
 	}

 	@Override
	public int compareTo(Object t){
	    if(t instanceof Student){
	        Student s = (Student)t;
	        return (this.name.compareTo(s.name));
	    }
    else
        return -1;
	}

	//My car Test
	@Before
	public void setUp() throws Exception {
	}
	@Test (expected = LowFuelException.class)
	public void testStartTripFail() throws LowFuelException, CreationException {
		MyCar car6 = new MyCar("45 5 bmw");
		car6.startTrip(1000.0);
	}
	@Test
	public void testGetMileage() throws CreationException {
		MyCar car7 = new MyCar("47 10 Volvo");
		double mil = car7.getMileage();
		assertTrue(mil==0.0);
		//assertFalse(mil!=0.0);
	}

	TreeMap<Integer, String> tmap =
    new TreeMap<Integer, String>();
	tmap.put(1, "Data1");

	/* Display content using Iterator*/
      Set set = tmap.entrySet();
      Iterator iterator = set.iterator();
      while(iterator.hasNext()) {
         Map.Entry mentry = (Map.Entry)iterator.next();
         System.out.print("key is: "+ mentry.getKey() + " & Value is: ");
         System.out.println(mentry.getValue());
      }

//////////////////////////////////////////
      /* This is how to declare HashMap */
      HashMap<Integer, String> hmap = new HashMap<Integer, String>();

      /*Adding elements to HashMap*/
      hmap.put(12, "Chaitanya");

      /* Display content using Iterator*/
      Set set = hmap.entrySet();
      Iterator iterator = set.iterator();
      while(iterator.hasNext()) {
         Map.Entry mentry = (Map.Entry)iterator.next();
         System.out.print("key is: "+ mentry.getKey() + " & Value is: ");
         System.out.println(mentry.getValue());
      }

      /* Get values based on key*/
      String var= hmap.get(2);
      System.out.println("Value at index 2 is: "+var);

      /* Remove values based on key*/
      hmap.remove(3);
      System.out.println("Map key and values after removal:");
      Set set2 = hmap.entrySet();
      Iterator iterator2 = set2.iterator();
      while(iterator2.hasNext()) {
          Map.Entry mentry2 = (Map.Entry)iterator2.next();
          System.out.print("Key is: "+mentry2.getKey() + " & Value is: ");
          System.out.println(mentry2.getValue());
       }
////////////////////////////////////////////
 // HashSet declaration
      HashSet<String> hset =
               new HashSet<String>();

      // Adding elements to the HashSet
      hset.add("Apple");
      //Displaying HashSet elements
      System.out.println(hset);