- Parsing JSON documents to java classes using gson
- getExternalFilesDir (Context)
- startActivity (Activity)
- onCreateOptionsMenu (Activity)
- InputStream (java.io)
A readable source of bytes.Most clients will use input streams that read data
from the file system (
- MessageDigest (java.security)
Uses a one-way hash function to turn an arbitrary number of bytes into a
fixed-length byte sequence.
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- TreeSet (java.util)
TreeSet is an implementation of SortedSet. All optional operations (adding and
removing) are support
- Vector (java.util)
Vector is an implementation of List, backed by an array and synchronized. All
optional operations in
- ExecutorService (java.util.concurrent)
An Executor that provides methods to manage termination and methods that can
produce a Future for tr
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