- Making http requests using okhttp
- startActivity (Activity)
- findViewById (Activity)
- scheduleAtFixedRate (Timer)
Schedules the specified task for repeated fixed-rate execution, beginning after
the specified delay.
- System (java.lang)
Provides access to system-related information and resources including standard
input and output. Ena
- MessageDigest (java.security)
Uses a one-way hash function to turn an arbitrary number of bytes into a
fixed-length byte sequence.
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- Set (java.util)
A Set is a data structure which does not allow duplicate elements.
- Stream (java.util.stream)
A sequence of elements supporting sequential and parallel aggregate operations.
The following exampl
- IsNull (org.hamcrest.core)
Is the value null?