- Creating JSON documents from java classes using gson
- scheduleAtFixedRate (Timer)
- findViewById (Activity)
- putExtra (Intent)
- 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.
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- Timer (java.util)
Timers schedule one-shot or recurring TimerTask for execution. Prefer
java.util.concurrent.Scheduled
- Cipher (javax.crypto)
This class provides access to implementations of cryptographic ciphers for
encryption and decryption
- Modifier (javassist)
The Modifier class provides static methods and constants to decode class and
member access modifiers
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