- Running tasks concurrently on multiple threads
- scheduleAtFixedRate (Timer)
- findViewById (Activity)
- getSupportFragmentManager (FragmentActivity)
- 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.
- DecimalFormat (java.text)
A concrete subclass of NumberFormat that formats decimal numbers. It has a
variety of features desig
- Locale (java.util)
Locale represents a language/country/variant combination. Locales are used to
alter the presentatio
- IsNull (org.hamcrest.core)
Is the value null?
- Component (java.awt)
A component is an object having a graphical representation that can be displayed
on the screen and t
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