MyTrackComparator

java.lang.Object
- MusicLandscape.util.comparators.MyTrackComparator

Direct Known Subclasses:

MyDurationComparator, MyTitleComparator
```
public abstract class MyTrackComparator
extends java.lang.Object
```
This class represents the concept of comparison of two tracks. It has a single abstract method that is to be implemented by concrete subclasses which implement concrete modes of comparison, e.g. by title, by duration or other.

Version:

234

Author:

TeM, JS

Stage:

ES04

Introduced in:

ExerciseSheet04

Programming problem category:

abstract class

- Constructor Summary
  
  Constructors
  Constructor Description
  
  MyTrackComparator()
- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  abstract int compare(Track t1, Track t2)
  Compares two tracks.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MyTrackComparator
```
public MyTrackComparator()
```
- Method Detail
  - compare
```
public abstract int compare(Track t1,
                            Track t2)
```
    Compares two tracks.
    
    The result of the comparison of two tracks is a measure of "distance" between the tow. Distance is not literal (spatial) distance but more generally the difference between the two measured in some unit.
    If the two tracks are equal in a certain sense their distance is zero, if the first argument is smaller than the second (again, in the sense of the (concrete) comparator) their distance is negative, positive otherwise. Example: compare two tracks by duration Track 1 (t1): duration 1200 Track 2 (t2): duration 1300
    Calling compare of a by-duration-comparator: compare(t1,t2) would return a negative number (since t1 is shorter than t2)
    Comparators may choose to handle comparison of null tracks but are not forced to.
    
    Parameters:
    
    t1 - the one track to compare
    
    t2 - the other track to which t1 is to be compared
    
    Returns:
    
    a measure of the distance between t1 and t2 in the sense of the comparator