- Running tasks concurrently on multiple threads
- scheduleAtFixedRate (Timer)
- getExternalFilesDir (Context)
- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
- DecimalFormat (java.text)
A concrete subclass of NumberFormat that formats decimal numbers. It has a
variety of features desig
- SimpleDateFormat (java.text)
Formats and parses dates in a locale-sensitive manner. Formatting turns a Date
into a String, and pa
- Deque (java.util)
A linear collection that supports element insertion and removal at both ends.
The name deque is shor
- HashSet (java.util)
HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
- Reference (javax.naming)
- JTextField (javax.swing)
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