- Creating JSON documents from java classes using gson
- onCreateOptionsMenu (Activity)
- getSystemService (Context)
- getSupportFragmentManager (FragmentActivity)
- BigDecimal (java.math)
An immutable arbitrary-precision signed decimal.A value is represented by an
arbitrary-precision "un
- SimpleDateFormat (java.text)
Formats and parses dates in a locale-sensitive manner. Formatting turns a Date
into a String, and pa
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- GregorianCalendar (java.util)
GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
- Collectors (java.util.stream)
- Cipher (javax.crypto)
This class provides access to implementations of cryptographic ciphers for
encryption and decryption
- Github Copilot alternatives