- Making http requests using okhttp
- onRequestPermissionsResult (Fragment)
- runOnUiThread (Activity)
- scheduleAtFixedRate (Timer)
- Path (java.nio.file)
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- Callable (java.util.concurrent)
A task that returns a result and may throw an exception. Implementors define a
single method with no
- CountDownLatch (java.util.concurrent)
A synchronization aid that allows one or more threads to wait until a set of
operations being perfor
- Window (java.awt)
A Window object is a top-level window with no borders and no menubar. The
default layout for a windo
- ImageIO (javax.imageio)
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