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Really Confused about using the Comparator Interface in Collections

 
Greenhorn
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The result given in the LearnKey exam is Good Please help explaining this?
 
Java Cowboy
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In lines 5 to 8, there is an anonymous inner class that implements Comparator<String>.

Line 6 is the start of the compare method of the Comparator.

In line 7, the two strings are compared by looking at the first character of each string and subtracting the two char values. This gives a value, which is returned as an int (positive, zero or negative), which determines the sort order. Lookup the API documentation of String.charAt(...).

In line 9, the comparator 'best' is used to sort the string array 'words'.
 
Greenhorn
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public int compare(Object o1,
Object o2)Compares its two arguments for order. Returns a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.
The line "return s2.charAt(1) - s1.charAt(1); " is comparing the two string by subtracting the Integer values of the second character of your string.
 
Dhruv Arya
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Got it thanks guys maybe going too much into it got me confused thanks for the help
 
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