- Running tasks concurrently on multiple threads
- getSupportFragmentManager (FragmentActivity)
- addToBackStack (FragmentTransaction)
- scheduleAtFixedRate (Timer)
- Semaphore (java.util.concurrent)
A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- Cipher (javax.crypto)
This class provides access to implementations of cryptographic ciphers for
encryption and decryption
- Font (java.awt)
The Font class represents fonts, which are used to render text in a visible way.
A font provides the
- Kernel (java.awt.image)
- Loader (org.hibernate.loader)
Abstract superclass of object loading (and querying) strategies. This class
implements useful common
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