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A ConnectException is thrown if a connection cannot be established to a remote
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This class represents a server-side socket that waits for incoming client
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Thrown when a hostname can not be resolved.
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An ExecutorService that executes each submitted task using one of possibly
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Patterns are compiled regular expressions. In many cases, convenience methods
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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