- Running tasks concurrently on multiple threads
- getSystemService (Context)
- startActivity (Activity)
- putExtra (Intent)
- FileWriter (java.io)
A specialized Writer that writes to a file in the file system. All write
requests made by calling me
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- Executor (java.util.concurrent)
An object that executes submitted Runnable tasks. This interface provides a way
of decoupling task s
- Cipher (javax.crypto)
This class provides access to implementations of cryptographic ciphers for
encryption and decryption
- DataSource (javax.sql)
An interface for the creation of Connection objects which represent a connection
to a database. This
- Runner (org.openjdk.jmh.runner)
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