- Creating JSON documents from java classes using gson
- setContentView (Activity)
- addToBackStack (FragmentTransaction)
- scheduleAtFixedRate (Timer)
- System (java.lang)
Provides access to system-related information and resources including standard
input and output. Ena
- SimpleDateFormat (java.text)
Formats and parses dates in a locale-sensitive manner. Formatting turns a Date
into a String, and pa
- Set (java.util)
A Set is a data structure which does not allow duplicate elements.
- SortedMap (java.util)
A map that has its keys ordered. The sorting is according to either the natural
ordering of its keys
- Pattern (java.util.regex)
Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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