CODEWITHSUNDEEP
javasorting
cdanzmann
cdanzmann

Reputation: 362

Influence the order of digits and characters in compare method

I have a Wicket web application, that sorts table rows in the following order:

Ascending:

Now i'm writing a webunit test to test the sorting mechanism, but it seems to switch the order of characters and numbers like:

Ascending:

So this code will fail, when sorting ascending and it encounters the two entries:

My simplified sorting code:

protected int compare(String val1, String val2) {
        return val1.compareTo(val2);
}

What's the "java way" of telling my test code to test the order like my web application produces it? May be something like Collator? I would prefer a JRE solution over a selfwritten Comparator over a 3rd party library.

Upvotes: 0

Views: 42

Answers (1)

user5010130
user5010130

Reputation: 96

You could try using a RuleBasedCollator like this:

String rule = "<a,A<b,B<c,C<[...]<'1'<'2'<'3'<'4'[...]";
RuleBasedCollator collator = new RuleBasedCollator(rule);
return collator.compare(val1,val2);

Upvotes: 2

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