- Running tasks concurrently on multiple threads
- setRequestProperty (URLConnection)
- findViewById (Activity)
- runOnUiThread (Activity)
- ConnectException (java.net)
A ConnectException is thrown if a connection cannot be established to a remote
host on a specific po
- MessageDigest (java.security)
Uses a one-way hash function to turn an arbitrary number of bytes into a
fixed-length byte sequence.
- Permission (java.security)
Legacy security code; do not use.
- Connection (java.sql)
A connection represents a link from a Java application to a database. All SQL
statements and results
- LinkedHashMap (java.util)
LinkedHashMap is an implementation of Map that guarantees iteration order. All
optional operations a
- Set (java.util)
A Set is a data structure which does not allow duplicate elements.
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