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- onCreateOptionsMenu (Activity)
- getSystemService (Context)
- getSharedPreferences (Context)
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A Uniform Resource Identifier that identifies an abstract or physical resource,
as specified by RFC
- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- UUID (java.util)
UUID is an immutable representation of a 128-bit universally unique identifier
(UUID). There are mul
- AtomicInteger (java.util.concurrent.atomic)
An int value that may be updated atomically. See the java.util.concurrent.atomic
package specificati
- Component (java.awt)
A component is an object having a graphical representation that can be displayed
on the screen and t
- JPanel (javax.swing)
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