- Running tasks concurrently on multiple threads
- findViewById (Activity)
- scheduleAtFixedRate (Timer)
- requestLocationUpdates (LocationManager)
- BigDecimal (java.math)
An immutable arbitrary-precision signed decimal.A value is represented by an
arbitrary-precision "un
- URLConnection (java.net)
A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
- Charset (java.nio.charset)
A charset is a named mapping between Unicode characters and byte sequences.
Every Charset can decode
- List (java.util)
An ordered collection (also known as a sequence). The user of this interface has
precise control ove
- JarFile (java.util.jar)
JarFile is used to read jar entries and their associated data from jar files.
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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