- Creating JSON documents from java classes using gson
- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- getSharedPreferences (Context)
- onRequestPermissionsResult (Fragment)
- FileInputStream (java.io)
An input stream that reads bytes from a file.
File file = ...finally
if (in != null)
in.clos
- FileReader (java.io)
A specialized Reader that reads from a file in the file system. All read
requests made by calling me
- DateFormat (java.text)
Formats or parses dates and times.This class provides factories for obtaining
instances configured f
- Callable (java.util.concurrent)
A task that returns a result and may throw an exception. Implementors define a
single method with no
- Executors (java.util.concurrent)
Factory and utility methods for Executor, ExecutorService,
ScheduledExecutorService, ThreadFactory,
- Servlet (javax.servlet)
Defines methods that all servlets must implement. A servlet is a small Java
program that runs within
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