- Creating JSON documents from java classes using gson
- getSystemService (Context)
- scheduleAtFixedRate (Timer)
- getOriginalFilename (MultipartFile)
Return the original filename in the client's filesystem.This may contain path
information depending
- FileWriter (java.io)
A specialized Writer that writes to a file in the file system. All write
requests made by calling me
- Collection (java.util)
Collection is the root of the collection hierarchy. It defines operations on
data collections and t
- Set (java.util)
A Set is a data structure which does not allow duplicate elements.
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- Collectors (java.util.stream)
- HttpServletRequest (javax.servlet.http)
Extends the javax.servlet.ServletRequest interface to provide request
information for HTTP servlets.
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