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ObjectMapper provides functionality for reading and writing JSON, either to and
from basic POJOs (Pl
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A Comparator is used to compare two objects to determine their ordering with
respect to each other.
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HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- HashSet (java.util)
HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
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UUID is an immutable representation of a 128-bit universally unique identifier
(UUID). There are mul
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The GridLayout class is a layout manager that lays out a container's components
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