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This class contains various methods for manipulating arrays (such as sorting and
searching). This cl
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Collection is the root of the collection hierarchy. It defines operations on
data collections and t
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Note: Do not use this class since it is obsolete. Please use the Map interface
for new implementatio
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A map that has its keys ordered. The sorting is according to either the natural
ordering of its keys
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Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
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