- Updating database using SQL prepared statement
- findViewById (Activity)
- onRequestPermissionsResult (Fragment)
- getSystemService (Context)
- BigDecimal (java.math)
An immutable arbitrary-precision signed decimal.A value is represented by an
arbitrary-precision "un
- MessageDigest (java.security)
Uses a one-way hash function to turn an arbitrary number of bytes into a
fixed-length byte sequence.
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- Format (java.text)
The base class for all formats. This is an abstract base class which specifies
the protocol for clas
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- StringUtils (org.apache.commons.lang)
Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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