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- IOException (java.io)
Signals a general, I/O-related error. Error details may be specified when
calling the constructor, a
- HttpURLConnection (java.net)
An URLConnection for HTTP (RFC 2616 [http://tools.ietf.org/html/rfc2616]) used
to send and receive d
- Dictionary (java.util)
Note: Do not use this class since it is obsolete. Please use the Map interface
for new implementatio
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- GridBagLayout (java.awt)
The GridBagLayout class is a flexible layout manager that aligns components
vertically and horizonta
- JButton (javax.swing)
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