In the K&B example of Arrays.sort(ArrayTosort,Comparator) [Page 577 of SCJP 1.6 book, Chapter no. 7 same as in SCJP 1.5 book]
what value does ReSortComaprator classes object rs take when its declared by
rs = new ReSortComparator().
Its used with Arrays.sort( ), what role does the comparator play here??
Joined: Feb 23, 2009
The comparator executes the sort logic that you define.
As the sort method goes through your Array, it compares two objects using your Comparator instance. Depending on the result, the objects are shifted or not. This generates the sorted Array.
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Joined: Oct 13, 2005
You have to implement the compare method in the Comparator interfaceOr something similar.
You can usually get away without overriding the equals() method.