public final class UuidUtil extends Object
UUID
.
Creates UUID
of different quality of randomness,
which are based on cryptographically weak Random
and strong SecureRandom
pseudo random number generators.
Modifier and Type | Field and Description |
---|---|
static UUID |
NIL_UUID
The nil UUID is special form of UUID that is specified to have all
128 bits set to zero as described in the RFC 4122.
|
Modifier and Type | Method and Description |
---|---|
static UUID |
newSecureUUID()
Static factory to retrieve a type 4 (pseudo randomly generated) UUID.
|
static String |
newSecureUuidString()
Static factory to retrieve a type 4 (pseudo randomly generated) UUID based string.
|
static UUID |
newUnsecureUUID()
Static factory to retrieve a type 4 (pseudo randomly generated) UUID.
|
static String |
newUnsecureUuidString()
Static factory to retrieve a type 4 (pseudo randomly generated) UUID based string.
|
public static final UUID NIL_UUID
public static String newUnsecureUuidString()
UUID
string is generated using a cryptographically weak pseudo random number generator.UUID
base stringpublic static String newSecureUuidString()
UUID
string is generated using a cryptographically strong pseudo random number generator.UUID
base stringpublic static UUID newUnsecureUUID()
UUID
is generated using a cryptographically weak pseudo random number generator.UUID
public static UUID newSecureUUID()
UUID
is generated using a cryptographically strong pseudo random number generator.UUID
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