title: Method to calculate the upcoming birthdays in next N days
body: <p>I need a method which takes an integer input (N) and returns the birthdays in the next N days. I am finding it very difficult to get any code running. Below is just a code of how I want it to work - it is in no means a working code. Any help is highly appreciated.</p>
  
  <pre><code>/* print out all the birthdays in the next N days */
  public void show( int N){
      Calendar cal = Calendar.getInstance();
      Date today = cal.getTime();
  
      // birthdayList is the list containing a list 
      // of birthdays Format: 12/10/1964 (MM/DD/YYYY)
  
      for(int i = 0; i&lt;birthdayList.getSize(); i++){
          if(birthdayList[i].getTime()- today.getTime()/(1000 * 60 * 60 * 24) == N)){
              System.out.println(birthdayList[i]);
          }
      }
  
  }
  </code></pre>