- Running tasks concurrently on multiple threads
- getSharedPreferences (Context)
- setRequestProperty (URLConnection)
- setContentView (Activity)
- BufferedInputStream (java.io)
A BufferedInputStream adds functionality to another input stream-namely, the
ability to buffer the i
- FileOutputStream (java.io)
An output stream that writes bytes to a file. If the output file exists, it can
be replaced or appen
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- HashSet (java.util)
HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
- Collectors (java.util.stream)
- JFileChooser (javax.swing)
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