OpenJDK 8
OpenJDK 8
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UUID

Class UUID

All Implemented Interfaces:
Serializable, Comparable<UUID>
public final class UUID
extends Object
implements Serializable, Comparable<UUID>

A class that represents an immutable universally unique identifier (UUID). A UUID represents a 128-bit value.

There exist different variants of these global identifiers. The methods of this class are for manipulating the Leach-Salz variant, although the constructors allow the creation of any variant of UUID (described below).

The layout of a variant 2 (Leach-Salz) UUID i