- Making http requests using okhttp
- getSharedPreferences (Context)
- getApplicationContext (Context)
- setContentView (Activity)
- DecimalFormat (java.text)
A concrete subclass of NumberFormat that formats decimal numbers. It has a
variety of features desig
- Calendar (java.util)
Calendar is an abstract base class for converting between a Date object and a
set of integer fields
- Collection (java.util)
Collection is the root of the collection hierarchy. It defines operations on
data collections and t
- TreeSet (java.util)
TreeSet is an implementation of SortedSet. All optional operations (adding and
removing) are support
- Cipher (javax.crypto)
This class provides access to implementations of cryptographic ciphers for
encryption and decryption
- StringUtils (org.apache.commons.lang)
Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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