Sorting Objects Using Comparator

Question

Alright,
I have an ArrayList of Audio Objects:
public Audio(String title, String author, String genre, int year)
          this.title = title;
          this.author = author;
          this.genre = genre;
          this.year = year;
     }Now, according to User Input you can sort the Objects either by Title Ascending/Descending, Author Ascend/Descend etc.
Now I am at a loss to how to define the actual Comparator...
public int compare(Audio a, Audio b)
          if(a.getTitle().compareTo(b.getTitle()) < 0)
               return -1;
          if(a.getTitle().compareTo(b.getTitle()) > 0)
               return 1;
          return 0;
     }(Is that correct?)
Would I need a separate Comparator interface for each sort? Then all I need is to use the Collections.sort() method yes?
I appreciate any comments and feedback. Thank you.

Answer 1

Now I am at a loss to how to define the actual Comparator...Should work but you can simplfy the coding and just use:
return a.getTitle().compareTo(b.getTitle());
Would I need a separate Comparator interface for each sort? Yes.
Then all I need is to use the Collections.sort() method Yes
I appreciate any comments and feedbackWhat I fail to understand is why you wouldn't create a simple test class to see if you understand what you are doing. Why post a question and wait hours hoping someone answers the question? We learn by our successes and mistakes.
Generally, try something first, then if it doesn't work ask a question. That way you have the code to post so we can see what you might be doing wrong.
Here is a simple demo of what you are attempting to do:
http://forum.java.sun.com/thread.jspa?forumID=31&threadID=598401