The primary key of the sort is the number of literal characters in the full URI matching pattern.
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The secondary key of the sort is the number of template expressions embedded within the pattern—that is, {id} or {id : .+}. This sort is in descending order.
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The tertiary key of the sort is the number of nondefault template expressions. A default template expression is one that does not define a regular expression—that is, {id}.
assigning the values of instance variable initializers to the corresponding instance variables, in the left-to-right order in which they appear textually in the source code
The order the container uses in building the chain of filters to be applied for a particular request URI is as follows:
First, the <url-pattern> matching filter mappings in the same order that these elements appear in the deployment descriptor.
Next, the <servlet-name> matching filter mappings in the same order that these elements appear in the deployment descriptor.