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Represents a command that can be executed. Often used to run code in a different
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A Set is a data structure which does not allow duplicate elements.
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A map that has its keys ordered. The sorting is according to either the natural
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Provides an abstract class to be subclassed to create an HTTP servlet suitable
for a Web site. A sub
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The org.slf4j.Logger interface is the main user entry point of SLF4J API. It is
expected that loggin
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