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- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- InputStream (java.io)
A readable source of bytes.Most clients will use input streams that read data
from the file system (
- HttpURLConnection (java.net)
An URLConnection for HTTP (RFC 2616 [http://tools.ietf.org/html/rfc2616]) used
to send and receive d
- ServerSocket (java.net)
This class represents a server-side socket that waits for incoming client
connections. A ServerSocke
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A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
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Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
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