- Creating JSON documents from java classes using gson
- setRequestProperty (URLConnection)
- getSystemService (Context)
- startActivity (Activity)
- FileInputStream (java.io)
An input stream that reads bytes from a file.
File file = ...finally
if (in != null)
in.clos
- BigDecimal (java.math)
An immutable arbitrary-precision signed decimal.A value is represented by an
arbitrary-precision "un
- InetAddress (java.net)
An Internet Protocol (IP) address. This can be either an IPv4 address or an IPv6
address, and in pra
- List (java.util)
An ordered collection (also known as a sequence). The user of this interface has
precise control ove
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- JOptionPane (javax.swing)
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