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ObjectMapper provides functionality for reading and writing JSON, either to and
from basic POJOs (Pl
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An input stream that reads bytes from a file.
File file = ...finally
if (in != null)
in.clos
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A linear collection that supports element insertion and removal at both ends.
The name deque is shor
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HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
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Stack is a Last-In/First-Out(LIFO) data structure which represents a stack of
objects. It enables u
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