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Return the contained value, if present, otherwise throw an exception to be
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Provides a client-side TCP socket.
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KeyStore is responsible for maintaining cryptographic keys and their owners.
The type of the syste
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A concrete subclass of NumberFormat that formats decimal numbers. It has a
variety of features desig
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ArrayList is an implementation of List, backed by an array. All optional
operations including adding
- Date (java.util)
A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
- Stack (java.util)
Stack is a Last-In/First-Out(LIFO) data structure which represents a stack of
objects. It enables u
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