- Making http post requests using okhttp
- putExtra (Intent)
- getResourceAsStream (ClassLoader)
- notifyDataSetChanged (ArrayAdapter)
- System (java.lang)
Provides access to system-related information and resources including standard
input and output. Ena
- URLConnection (java.net)
A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
- MessageDigest (java.security)
Uses a one-way hash function to turn an arbitrary number of bytes into a
fixed-length byte sequence.
- Connection (java.sql)
A connection represents a link from a Java application to a database. All SQL
statements and results
- Collection (java.util)
Collection is the root of the collection hierarchy. It defines operations on
data collections and t
- StringUtils (org.apache.commons.lang)
Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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