- Running tasks concurrently on multiple threads
- getSystemService (Context)
- scheduleAtFixedRate (Timer)
- putExtra (Intent)
- OutputStream (java.io)
A writable sink for bytes.Most clients will use output streams that write data
to the file system (
- Random (java.util)
This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the
- Set (java.util)
A Set is a data structure which does not allow duplicate elements.
- TimerTask (java.util)
The TimerTask class represents a task to run at a specified time. The task may
be run once or repeat
- 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
- CodeWhisperer alternatives