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ObjectMapper provides functionality for reading and writing JSON, either to and
from basic POJOs (Pl
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A ConnectException is thrown if a connection cannot be established to a remote
host on a specific po
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An Internet Protocol (IP) address. This can be either an IPv4 address or an IPv6
address, and in pra
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A task that returns a result and may throw an exception. Implementors define a
single method with no
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Defines methods that all servlets must implement. A servlet is a small Java
program that runs within
- Filter (javax.servlet)
A filter is an object that performs filtering tasks on either the request to a
resource (a servlet o
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