- Running tasks concurrently on multiple threads
- scheduleAtFixedRate (Timer)
- getSupportFragmentManager (FragmentActivity)
- getExternalFilesDir (Context)
- OutputStream (java.io)
A writable sink for bytes.Most clients will use output streams that write data
to the file system (
- RandomAccessFile (java.io)
Allows reading from and writing to a file in a random-access manner. This is
different from the uni-
- KeyStore (java.security)
KeyStore is responsible for maintaining cryptographic keys and their owners.
The type of the syste
- MessageDigest (java.security)
Uses a one-way hash function to turn an arbitrary number of bytes into a
fixed-length byte sequence.
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- Callable (java.util.concurrent)
A task that returns a result and may throw an exception. Implementors define a
single method with no
- Top 12 Jupyter Notebook extensions