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ObjectMapper provides functionality for reading and writing JSON, either to and
from basic POJOs (Pl
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Allows reading from and writing to a file in a random-access manner. This is
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Calendar is an abstract base class for converting between a Date object and a
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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Factory that creates instances of DateTimeFormatter from patterns and styles.
Datetime formatting i
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