java.lang.Object
- com.github.f4b6a3.uuid.UuidCreator

```
public final class UuidCreator
extends Object
```
Facade for everything.
All UUID types can be generated from this entry point.

Field Summary

Fields
Modifier and Type	Field	Description
`static UuidLocalDomain`	`LOCAL_DOMAIN_GROUP`
`static UuidLocalDomain`	`LOCAL_DOMAIN_ORG`
`static UuidLocalDomain`	`LOCAL_DOMAIN_PERSON`
`static UuidNamespace`	`NAMESPACE_DNS`
`static UuidNamespace`	`NAMESPACE_OID`
`static UuidNamespace`	`NAMESPACE_URL`
`static UuidNamespace`	`NAMESPACE_X500`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static UUID`	`fromBytes(byte[] uuid)`	Returns a UUID from a byte array.
`static UUID`	`fromString(String uuid)`	Returns a UUID from a string.
`static UUID`	`getDceSecurity(byte localDomain, int localIdentifier)`	Returns a DCE Security unique identifier (UUIDv2).
`static UUID`	`getDceSecurity(UuidLocalDomain localDomain, int localIdentifier)`	Returns a DCE Security unique identifier (UUIDv2).
`static UUID`	`getDceSecurityWithHash(byte localDomain, int localIdentifier)`	Returns a DCE Security unique identifier (UUIDv2).
`static UUID`	`getDceSecurityWithHash(UuidLocalDomain localDomain, int localIdentifier)`	Returns a DCE Security unique identifier (UUIDv2).
`static UUID`	`getDceSecurityWithMac(byte localDomain, int localIdentifier)`	Returns a DCE Security unique identifier (UUIDv2).
`static UUID`	`getDceSecurityWithMac(UuidLocalDomain localDomain, int localIdentifier)`	Returns a DCE Security unique identifier (UUIDv2).
`static UUID`	`getDceSecurityWithRandom(byte localDomain, int localIdentifier)`	Returns a DCE Security unique identifier (UUIDv2).
`static UUID`	`getDceSecurityWithRandom(UuidLocalDomain localDomain, int localIdentifier)`	Returns a DCE Security unique identifier (UUIDv2).
`static UUID`	`getMax()`	Returns a Max UUID.
`static UUID`	`getNameBasedMd5(byte[] name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(UuidNamespace namespace, byte[] name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(UuidNamespace namespace, String name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(UuidNamespace namespace, UUID name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(String name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(String namespace, byte[] name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(String namespace, String name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(String namespace, UUID name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(UUID name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(UUID namespace, byte[] name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(UUID namespace, String name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedMd5(UUID namespace, UUID name)`	Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
`static UUID`	`getNameBasedSha1(byte[] name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(UuidNamespace namespace, byte[] name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(UuidNamespace namespace, String name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(UuidNamespace namespace, UUID name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(String name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(String namespace, byte[] name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(String namespace, String name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(String namespace, UUID name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(UUID name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(UUID namespace, byte[] name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(UUID namespace, String name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNameBasedSha1(UUID namespace, UUID name)`	Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
`static UUID`	`getNil()`	Returns a Nil UUID.
`static UUID`	`getPrefixComb()`	Returns a Prefix COMB GUID.
`static UUID`	`getPrefixCombMax(Instant instant)`	Returns the maximum Prefix COMB GUID for a given instant.
`static UUID`	`getPrefixCombMin(Instant instant)`	Returns the minimum Prefix COMB GUID for a given instant.
`static UUID`	`getRandomBased()`	Returns a random-based unique identifier (UUIDv4).
`static UUID`	`getRandomBasedFast()`	Returns a fast random-based unique identifier (UUIDv4).
`static UUID`	`getShortPrefixComb()`	Returns n Short Prefix COMB GUID.
`static UUID`	`getShortSuffixComb()`	Returns a Short Suffix COMB GUID.
`static UUID`	`getSuffixComb()`	Returns a Suffix COMB GUID.
`static UUID`	`getSuffixCombMax(Instant instant)`	Returns the maximum Suffix COMB GUID for a given instant.
`static UUID`	`getSuffixCombMin(Instant instant)`	Returns the minimum Suffix COMB GUID for a given instant.
`static UUID`	`getTimeBased()`	Returns a time-based unique identifier (UUIDv1).
`static UUID`	`getTimeBased(Instant instant, Integer clockseq, Long nodeid)`	Returns a time-based unique identifier (UUIDv1).
`static UUID`	`getTimeBasedMax(Instant instant)`	Returns the maximum UUIDv1 for a given instant.
`static UUID`	`getTimeBasedMin(Instant instant)`	Returns the minimum UUIDv1 for a given instant.
`static UUID`	`getTimeBasedWithHash()`	Returns a time-based unique identifier (UUIDv1).
`static UUID`	`getTimeBasedWithMac()`	Returns a time-based unique identifier (UUIDv1).
`static UUID`	`getTimeBasedWithRandom()`	Returns a time-based unique identifier (UUIDv1).
`static UUID`	`getTimeOrdered()`	Returns a time-ordered unique identifier (UUIDv6).
`static UUID`	`getTimeOrdered(Instant instant, Integer clockseq, Long nodeid)`	Returns a time-ordered unique identifier (UUIDv6).
`static UUID`	`getTimeOrderedEpoch()`	Returns a time-ordered unique identifier that uses Unix Epoch (UUIDv7).
`static UUID`	`getTimeOrderedEpoch(Instant instant)`	Returns a time-ordered unique identifier that uses Unix Epoch (UUIDv7) for a given instant.
`static UUID`	`getTimeOrderedEpochMax(Instant instant)`	Returns the maximum UUIDv7 for a given instant.
`static UUID`	`getTimeOrderedEpochMin(Instant instant)`	Returns the minimum UUIDv7 for a given instant.
`static UUID`	`getTimeOrderedEpochPlus1()`	Returns a time-ordered unique identifier that uses Unix Epoch (UUIDv7).
`static UUID`	`getTimeOrderedEpochPlusN()`	Returns a time-ordered unique identifier that uses Unix Epoch (UUIDv7).
`static UUID`	`getTimeOrderedMax(Instant instant)`	Returns the maximum UUIDv6 for a given instant.
`static UUID`	`getTimeOrderedMin(Instant instant)`	Returns the minimum UUIDv6 for a given instant.
`static UUID`	`getTimeOrderedWithHash()`	Returns a time-ordered unique identifier (UUIDv6).
`static UUID`	`getTimeOrderedWithMac()`	Returns a time-ordered unique identifier (UUIDv6).
`static UUID`	`getTimeOrderedWithRandom()`	Returns a time-ordered unique identifier (UUIDv6).
`static byte[]`	`toBytes(UUID uuid)`	Returns an array of bytes from a UUID.
`static String`	`toString(UUID uuid)`	Returns a string from a UUID.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - NAMESPACE_DNS
```
public static final UuidNamespace NAMESPACE_DNS
```
  - NAMESPACE_URL
```
public static final UuidNamespace NAMESPACE_URL
```
  - NAMESPACE_OID
```
public static final UuidNamespace NAMESPACE_OID
```
  - NAMESPACE_X500
```
public static final UuidNamespace NAMESPACE_X500
```
  - LOCAL_DOMAIN_PERSON
```
public static final UuidLocalDomain LOCAL_DOMAIN_PERSON
```
  - LOCAL_DOMAIN_GROUP
```
public static final UuidLocalDomain LOCAL_DOMAIN_GROUP
```
  - LOCAL_DOMAIN_ORG
```
public static final UuidLocalDomain LOCAL_DOMAIN_ORG
```
- Method Detail
  - toBytes
```
public static byte[] toBytes(UUID uuid)
```
    Returns an array of bytes from a UUID.
    
    Parameters:
    
    uuid - a UUID
    
    Returns:
    
    an array of bytes
    
    Throws:
    
    InvalidUuidException - if the argument is invalid
  - fromBytes
```
public static UUID fromBytes(byte[] uuid)
```
    Returns a UUID from a byte array.
    It also checks if the input byte array is valid.
    
    Parameters:
    
    uuid - a byte array
    
    Returns:
    
    a UUID
    
    Throws:
    
    InvalidUuidException - if the argument is invalid
  - toString
```
public static String toString(UUID uuid)
```
    Returns a string from a UUID.
    It can be much faster than UUID.toString() in JDK 8.
    
    Parameters:
    
    uuid - a UUID
    
    Returns:
    
    a UUID string
    
    Throws:
    
    InvalidUuidException - if the argument is invalid
  - fromString
```
public static UUID fromString(String uuid)
```
    Returns a UUID from a string.
    It accepts strings:
    
    With URN prefix: "urn:uuid:";
    With curly braces: '{' and '}';
    With upper or lower case;
    With or without hyphens.
    
    It can be much faster than UUID.fromString(String) in JDK 8.
    It also can be twice as fast as UUID.fromString(String) in JDK 11.
    Parameters:
    
    uuid - a UUID string
    
    Returns:
    
    a UUID
    
    Throws:
    
    InvalidUuidException - if the argument is invalid
  - getNil
```
public static UUID getNil()
```
    Returns a Nil UUID.
    Nil UUID is a special UUID that has all 128 bits set to ZERO.
    The canonical string of Nil UUID is 00000000-0000-0000-0000-000000000000.
    
    Returns:
    
    a Nil UUID
  - getMax
```
public static UUID getMax()
```
    Returns a Max UUID.
    Max UUID is a special UUID that has all 128 bits set to ONE.
    The canonical string of Max UUID is FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF.
    
    Returns:
    
    a Max UUID
    
    Since:
    
    5.0.0
    
    See Also:
    
    New UUID Formats
  - getRandomBased
```
public static UUID getRandomBased()
```
    Returns a random-based unique identifier (UUIDv4).
    
    Returns:
    
    a UUIDv4
    
    See Also:
    
    RandomBasedFactory
  - getRandomBasedFast
```
public static UUID getRandomBasedFast()
```
    Returns a fast random-based unique identifier (UUIDv4).
    It employs ThreadLocalRandom which works very well, although not cryptographically strong. It can be useful, for example, for logging.
    Security-sensitive applications that require a cryptographically secure pseudo-random generator should use getRandomBased().
    
    Returns:
    
    a UUIDv4
    
    Since:
    
    5.2.0
    
    See Also:
    
    RandomBasedFactory, ThreadLocalRandom
  - getTimeBased
```
public static UUID getTimeBased()
```
    Returns a time-based unique identifier (UUIDv1).
    The default node identifier is a random number that is generated once at initialization.
    A custom node identifier can be provided by the system property 'uuidcreator.node' or the environment variable 'UUIDCREATOR_NODE'.
    
    Returns:
    
    a UUIDv1
    
    See Also:
    
    TimeBasedFactory
  - getTimeBasedWithMac
```
public static UUID getTimeBasedWithMac()
```
    Returns a time-based unique identifier (UUIDv1).
    The node identifier is a MAC address that is obtained once at initialization.
    
    Returns:
    
    a UUIDv1
    
    See Also:
    
    TimeBasedFactory
  - getTimeBasedWithHash
```
public static UUID getTimeBasedWithHash()
```
    Returns a time-based unique identifier (UUIDv1).
    The node identifier is a hash that is calculated once at initialization.
    The hash input is a string containing host name, MAC and IP.
    
    Returns:
    
    a UUIDv1
    
    See Also:
    
    TimeBasedFactory, MachineId
  - getTimeBasedWithRandom
```
public static UUID getTimeBasedWithRandom()
```
    Returns a time-based unique identifier (UUIDv1).
    The node identifier is a random number that is generated with each method invocation.
    
    Returns:
    
    a UUIDv1
    
    See Also:
    
    TimeBasedFactory
  - getTimeBased
```
public static UUID getTimeBased(Instant instant,
                                Integer clockseq,
                                Long nodeid)
```
    Returns a time-based unique identifier (UUIDv1).
    Instant accuracy is be limited to 1 millisecond on Linux with JDK 8. On Windows, its accuracy may be limited to 15.625ms (64hz).
    The clock sequence is a number between 0 and 16383 (2^14 - 1). If the value passed as an argument is out of range, the result of MOD 2^14 will be used.
    The node identifier is a number between 0 and 281474976710655 (2^48 - 1). If the value passed as an argument is out of range, the result of MOD 2^48 will be used.
    Null arguments are ignored. If all arguments are null, this method works just like method getTimeBased().
    
    Parameters:
    
    instant - an alternate instant
    
    clockseq - an alternate clock sequence between 0 and 2^14-1
    
    nodeid - an alternate node identifier between 0 and 2^48-1
    
    Returns:
    
    a UUIDv1
    
    See Also:
    
    TimeBasedFactory
  - getTimeBasedMin
```
public static UUID getTimeBasedMin(Instant instant)
```
    Returns the minimum UUIDv1 for a given instant.
    The 60 bits of the timestamp are filled with the bits of the given instant and the other 62 bits are all set to ZERO.
    For example, the minimum UUIDv1 for 2022-02-22 22:22:22.222 is `e7a1c2e0-942d-11ec-8000-000000000000`, where `e7a1c2e0-942d-_1ec` is the timestamp in hexadecimal.
    It can be useful to find all records before or after a specific timestamp in a table without a `created_at` field.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a UUIDv1
  - getTimeBasedMax
```
public static UUID getTimeBasedMax(Instant instant)
```
    Returns the maximum UUIDv1 for a given instant.
    The 60 bits of the timestamp are filled with the bits of the given instant and the other 62 bits are all set to ONE.
    For example, the maximum UUIDv1 for 2022-02-22 22:22:22.222 is `e7a1c2e0-942d-11ec-bfff-ffffffffffff`, where `e7a1c2e0-942d-_1ec` is the timestamp in hexadecimal.
    It can be useful to find all records before or after a specific timestamp in a table without a `created_at` field.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a UUIDv1
  - getTimeOrdered
```
public static UUID getTimeOrdered()
```
    Returns a time-ordered unique identifier (UUIDv6).
    The default node identifier is a random number that is generated once at initialization.
    A custom node identifier can be provided by the system property 'uuidcreator.node' or the environment variable 'UUIDCREATOR_NODE'.
    
    Returns:
    
    a UUIDv6
    
    See Also:
    
    TimeOrderedFactory, New UUID Formats
  - getTimeOrderedWithMac
```
public static UUID getTimeOrderedWithMac()
```
    Returns a time-ordered unique identifier (UUIDv6).
    The node identifier is a MAC address that is obtained once at initialization.
    
    Returns:
    
    a UUIDv6
    
    See Also:
    
    TimeOrderedFactory, New UUID Formats
  - getTimeOrderedWithHash
```
public static UUID getTimeOrderedWithHash()
```
    Returns a time-ordered unique identifier (UUIDv6).
    The node identifier is a hash that is calculated once at initialization.
    The hash input is a string containing host name, MAC and IP.
    
    Returns:
    
    a UUIDv6
    
    See Also:
    
    TimeOrderedFactory, MachineId, New UUID Formats
  - getTimeOrderedWithRandom
```
public static UUID getTimeOrderedWithRandom()
```
    Returns a time-ordered unique identifier (UUIDv6).
    The node identifier is a random number that is generated with each method invocation.
    
    Returns:
    
    a UUIDv6
    
    See Also:
    
    TimeOrderedFactory, New UUID Formats
  - getTimeOrdered
```
public static UUID getTimeOrdered(Instant instant,
                                  Integer clockseq,
                                  Long nodeid)
```
    Returns a time-ordered unique identifier (UUIDv6).
    Instant accuracy is be limited to 1 millisecond on Linux with JDK 8. On Windows, its accuracy may be limited to 15.625ms (64hz).
    The clock sequence is a number between 0 and 16383 (2^14 - 1). If the value passed as an argument is out of range, the result of MOD 2^14 will be used.
    The node identifier is a number between 0 and 281474976710655 (2^48 - 1). If the value passed as an argument is out of range, the result of MOD 2^48 will be used.
    Null arguments are ignored. If all arguments are null, this method works just like method getTimeOrdered().
    
    Parameters:
    
    instant - an alternate instant
    
    clockseq - an alternate clock sequence between 0 and 2^14-1
    
    nodeid - an alternate node identifier between 0 and 2^48-1
    
    Returns:
    
    a UUIDv6
    
    See Also:
    
    TimeOrderedFactory, New UUID Formats
  - getTimeOrderedMin
```
public static UUID getTimeOrderedMin(Instant instant)
```
    Returns the minimum UUIDv6 for a given instant.
    The 60 bits of the timestamp are filled with the bits of the given instant and the other 62 bits are all set to ZERO.
    For example, the minimum UUIDv6 for 2022-02-22 22:22:22.222 is `1ec942de-7a1c-62e0-8000-000000000000`, where `1ec942de-7a1c-_2e0` is the timestamp in hexadecimal.
    It can be useful to find all records before or after a specific timestamp in a table without a `created_at` field.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a UUIDv6
  - getTimeOrderedMax
```
public static UUID getTimeOrderedMax(Instant instant)
```
    Returns the maximum UUIDv6 for a given instant.
    The 60 bits of the timestamp are filled with the bits of the given instant and the other 62 bits are all set to ONE.
    For example, the maximum UUIDv6 for 2022-02-22 22:22:22.222 is `1ec942de-7a1c-62e0-bfff-ffffffffffff`, where `1ec942de-7a1c-_2e0` is the timestamp in hexadecimal.
    It can be useful to find all records before or after a specific timestamp in a table without a `created_at` field.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a UUIDv6
  - getTimeOrderedEpoch
```
public static UUID getTimeOrderedEpoch()
```
    Returns a time-ordered unique identifier that uses Unix Epoch (UUIDv7).
    This method produces identifiers with 3 parts: time, counter and random.
    The counter bits are incremented by 1 when the time repeats.
    The random bits are generated with each method invocation.
    
    Returns:
    
    a UUIDv7
    
    Since:
    
    5.0.0
    
    See Also:
    
    TimeOrderedEpochFactory, New UUID Formats
  - getTimeOrderedEpochPlus1
```
public static UUID getTimeOrderedEpochPlus1()
```
    Returns a time-ordered unique identifier that uses Unix Epoch (UUIDv7).
    This method produces identifiers with 2 parts: time and monotonic random.
    The monotonic random bits are incremented by 1 when the time repeats.
    
    Returns:
    
    a UUIDv7
    
    Since:
    
    5.0.0
    
    See Also:
    
    TimeOrderedEpochFactory, New UUID Formats
  - getTimeOrderedEpochPlusN
```
public static UUID getTimeOrderedEpochPlusN()
```
    Returns a time-ordered unique identifier that uses Unix Epoch (UUIDv7).
    This method produces identifiers with 2 parts: time and monotonic random.
    The monotonic random bits are incremented by a random number between 1 and 2^32 when the time repeats.
    
    Returns:
    
    a UUIDv7
    
    Since:
    
    5.0.0
    
    See Also:
    
    TimeOrderedEpochFactory, New UUID Formats
  - getTimeOrderedEpochMin
```
public static UUID getTimeOrderedEpochMin(Instant instant)
```
    Returns the minimum UUIDv7 for a given instant.
    The 48 bits of the time component are filled with the bits of the given instant and the other 74 bits are all set to ZERO.
    For example, the minimum UUIDv7 for 2022-02-22 22:22:22.222 is `017f2387-460e-7000-8000-000000000000`, where `017f2387-460e` is the timestamp in hexadecimal.
    It can be useful to find all records before or after a specific timestamp in a table without a `created_at` field.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a UUIDv7
  - getTimeOrderedEpochMax
```
public static UUID getTimeOrderedEpochMax(Instant instant)
```
    Returns the maximum UUIDv7 for a given instant.
    The 48 bits of the time component are filled with the bits of the given instant and the other 74 bits are all set to ONE.
    For example, the maximum UUIDv7 for 2022-02-22 22:22:22.222 is `017f2387-460e-7fff-bfff-ffffffffffff`, where `017f2387-460e` is the timestamp in hexadecimal.
    It can be useful to find all records before or after a specific timestamp in a table without a `created_at` field.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a UUIDv7
  - getTimeOrderedEpoch
```
public static UUID getTimeOrderedEpoch(Instant instant)
```
    Returns a time-ordered unique identifier that uses Unix Epoch (UUIDv7) for a given instant.
    This method produces identifiers with 2 parts: time and secure random.
    The 48 bits of the time component are filled with the bits of the given instant and the other 74 bits are random.
    For example, the maximum UUIDv7 for 2022-02-22 22:22:22.222 is `017f2387-460e-7012-b345-6789abcdef01`, where `017f2387-460e` is the timestamp in hexadecimal.
    The random bits are generated with each method invocation.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a UUIDv7
    
    Since:
    
    5.3.3
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(String name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    The name string is encoded into a sequence of bytes using UTF-8.
    
    Parameters:
    
    name - a string
    
    Returns:
    
    a UUIDv3
    
    See Also:
    
    NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(byte[] name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    
    Parameters:
    
    name - a byte array
    
    Returns:
    
    a UUIDv3
    
    See Also:
    
    NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(UUID name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    
    Parameters:
    
    name - a UUID
    
    Returns:
    
    a UUIDv3
    
    See Also:
    
    NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(UUID namespace,
                                   String name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    The name string is encoded into a sequence of bytes using UTF-8.
    
    Parameters:
    
    namespace - a custom name space UUID
    
    name - a string
    
    Returns:
    
    a UUIDv3
    
    See Also:
    
    UuidNamespace, NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(UUID namespace,
                                   byte[] name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    
    Parameters:
    
    namespace - a custom name space UUID
    
    name - a byte array
    
    Returns:
    
    a UUIDv3
    
    See Also:
    
    UuidNamespace, NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(UUID namespace,
                                   UUID name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    
    Parameters:
    
    namespace - a custom name space UUID
    
    name - a UUID
    
    Returns:
    
    a UUIDv3
    
    See Also:
    
    UuidNamespace, NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(String namespace,
                                   String name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    The name string is encoded into a sequence of bytes using UTF-8.
    
    Parameters:
    
    namespace - a custom name space UUID in string format
    
    name - a string
    
    Returns:
    
    a UUIDv3
    
    Throws:
    
    InvalidUuidException - if namespace is invalid
    
    See Also:
    
    UuidNamespace, NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(String namespace,
                                   byte[] name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    
    Parameters:
    
    namespace - a custom name space UUID in string format
    
    name - a byte array
    
    Returns:
    
    a UUIDv3
    
    Throws:
    
    InvalidUuidException - if namespace is invalid
    
    See Also:
    
    UuidNamespace, NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(String namespace,
                                   UUID name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    
    Parameters:
    
    namespace - a custom name space UUID in string format
    
    name - a UUID
    
    Returns:
    
    a UUIDv3
    
    Throws:
    
    InvalidUuidException - if namespace is invalid
    
    See Also:
    
    UuidNamespace, NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(UuidNamespace namespace,
                                   String name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    The name string is encoded into a sequence of bytes using UTF-8.
    Name spaces predefined by RFC-4122 (Appendix C):
    
    NAMESPACE_DNS: Name string is a fully-qualified domain name;
    NAMESPACE_URL: Name string is a URL;
    NAMESPACE_OID: Name string is an ISO OID;
    NAMESPACE_X500: Name string is an X.500 DN (in DER or text format).
    Parameters:
    
    namespace - a predefined name space enumeration
    
    name - a string
    
    Returns:
    
    a UUIDv3
    
    See Also:
    
    UuidNamespace, NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(UuidNamespace namespace,
                                   byte[] name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    Name spaces predefined by RFC-4122 (Appendix C):
    
    NAMESPACE_DNS: Name string is a fully-qualified domain name;
    NAMESPACE_URL: Name string is a URL;
    NAMESPACE_OID: Name string is an ISO OID;
    NAMESPACE_X500: Name string is an X.500 DN (in DER or text format).
    Parameters:
    
    namespace - a predefined name space enumeration
    
    name - a byte array
    
    Returns:
    
    a UUIDv3
    
    See Also:
    
    UuidNamespace, NameBasedMd5Factory
  - getNameBasedMd5
```
public static UUID getNameBasedMd5(UuidNamespace namespace,
                                   UUID name)
```
    Returns a name-based unique identifier that uses MD5 hashing (UUIDv3).
    Name spaces predefined by RFC-4122 (Appendix C):
    
    NAMESPACE_DNS: Name string is a fully-qualified domain name;
    NAMESPACE_URL: Name string is a URL;
    NAMESPACE_OID: Name string is an ISO OID;
    NAMESPACE_X500: Name string is an X.500 DN (in DER or text format).
    Parameters:
    
    namespace - a predefined name space enumeration
    
    name - a UUID
    
    Returns:
    
    a UUIDv3
    
    See Also:
    
    UuidNamespace, NameBasedMd5Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(String name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    The name string is encoded into a sequence of bytes using UTF-8.
    
    Parameters:
    
    name - a string
    
    Returns:
    
    a UUIDv5
    
    See Also:
    
    NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(byte[] name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    
    Parameters:
    
    name - a byte array
    
    Returns:
    
    a UUIDv5
    
    See Also:
    
    NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(UUID name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    
    Parameters:
    
    name - a UUID
    
    Returns:
    
    a UUIDv5
    
    See Also:
    
    NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(UUID namespace,
                                    String name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    The name string is encoded into a sequence of bytes using UTF-8.
    
    Parameters:
    
    namespace - a custom name space UUID
    
    name - a string
    
    Returns:
    
    a UUIDv5
    
    See Also:
    
    UuidNamespace, NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(UUID namespace,
                                    byte[] name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    
    Parameters:
    
    namespace - a custom name space UUID
    
    name - a byte array
    
    Returns:
    
    a UUIDv5
    
    See Also:
    
    UuidNamespace, NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(UUID namespace,
                                    UUID name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    
    Parameters:
    
    namespace - a custom name space UUID
    
    name - a UUID
    
    Returns:
    
    a UUIDv5
    
    See Also:
    
    UuidNamespace, NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(String namespace,
                                    String name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    The name string is encoded into a sequence of bytes using UTF-8.
    
    Parameters:
    
    namespace - a custom name space UUID in string format
    
    name - a string
    
    Returns:
    
    a UUIDv5
    
    Throws:
    
    InvalidUuidException - if namespace is invalid
    
    See Also:
    
    UuidNamespace, NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(String namespace,
                                    byte[] name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    
    Parameters:
    
    namespace - a custom name space UUID in string format
    
    name - a byte array
    
    Returns:
    
    a UUIDv5
    
    Throws:
    
    InvalidUuidException - if namespace is invalid
    
    See Also:
    
    UuidNamespace, NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(String namespace,
                                    UUID name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    
    Parameters:
    
    namespace - a custom name space UUID in string format
    
    name - a UUID
    
    Returns:
    
    a UUIDv5
    
    Throws:
    
    InvalidUuidException - if namespace is invalid
    
    See Also:
    
    UuidNamespace, NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(UuidNamespace namespace,
                                    String name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    The name string is encoded into a sequence of bytes using UTF-8.
    Name spaces predefined by RFC-4122 (Appendix C):
    
    NAMESPACE_DNS: Name string is a fully-qualified domain name;
    NAMESPACE_URL: Name string is a URL;
    NAMESPACE_OID: Name string is an ISO OID;
    NAMESPACE_X500: Name string is an X.500 DN (in DER or text format).
    Parameters:
    
    namespace - a predefined name space enumeration
    
    name - a string
    
    Returns:
    
    a UUIDv5
    
    See Also:
    
    UuidNamespace, NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(UuidNamespace namespace,
                                    byte[] name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    Name spaces predefined by RFC-4122 (Appendix C):
    
    NAMESPACE_DNS: Name string is a fully-qualified domain name;
    NAMESPACE_URL: Name string is a URL;
    NAMESPACE_OID: Name string is an ISO OID;
    NAMESPACE_X500: Name string is an X.500 DN (in DER or text format).
    Parameters:
    
    namespace - a predefined name space enumeration
    
    name - a byte array
    
    Returns:
    
    a UUIDv5
    
    See Also:
    
    UuidNamespace, NameBasedSha1Factory
  - getNameBasedSha1
```
public static UUID getNameBasedSha1(UuidNamespace namespace,
                                    UUID name)
```
    Returns a name-based unique identifier that uses SHA-1 hashing (UUIDv5).
    Name spaces predefined by RFC-4122 (Appendix C):
    
    NAMESPACE_DNS: Name string is a fully-qualified domain name;
    NAMESPACE_URL: Name string is a URL;
    NAMESPACE_OID: Name string is an ISO OID;
    NAMESPACE_X500: Name string is an X.500 DN (in DER or text format).
    Parameters:
    
    namespace - a predefined name space enumeration
    
    name - a UUID
    
    Returns:
    
    a UUIDv5
    
    See Also:
    
    UuidNamespace, NameBasedSha1Factory
  - getDceSecurity
```
public static UUID getDceSecurity(byte localDomain,
                                  int localIdentifier)
```
    Returns a DCE Security unique identifier (UUIDv2).
    
    Parameters:
    
    localDomain - a custom local domain byte
    
    localIdentifier - a local identifier
    
    Returns:
    
    a UUIDv2
    
    See Also:
    
    UuidLocalDomain, DceSecurityFactory
  - getDceSecurityWithMac
```
public static UUID getDceSecurityWithMac(byte localDomain,
                                         int localIdentifier)
```
    Returns a DCE Security unique identifier (UUIDv2).
    
    Parameters:
    
    localDomain - a custom local domain byte
    
    localIdentifier - a local identifier
    
    Returns:
    
    a UUIDv2
    
    See Also:
    
    UuidLocalDomain, DceSecurityFactory
  - getDceSecurityWithHash
```
public static UUID getDceSecurityWithHash(byte localDomain,
                                          int localIdentifier)
```
    Returns a DCE Security unique identifier (UUIDv2).
    
    Parameters:
    
    localDomain - a custom local domain byte
    
    localIdentifier - a local identifier
    
    Returns:
    
    a UUIDv2
    
    See Also:
    
    UuidLocalDomain, DceSecurityFactory
  - getDceSecurityWithRandom
```
public static UUID getDceSecurityWithRandom(byte localDomain,
                                            int localIdentifier)
```
    Returns a DCE Security unique identifier (UUIDv2).
    
    Parameters:
    
    localDomain - a custom local domain byte
    
    localIdentifier - a local identifier
    
    Returns:
    
    a UUIDv2
    
    See Also:
    
    UuidLocalDomain, DceSecurityFactory
  - getDceSecurity
```
public static UUID getDceSecurity(UuidLocalDomain localDomain,
                                  int localIdentifier)
```
    Returns a DCE Security unique identifier (UUIDv2).
    Local domains predefined by DCE 1.1 Authentication and Security Services (Chapter 11):
    
    LOCAL_DOMAIN_PERSON: 0 (interpreted as POSIX UID domain);
    LOCAL_DOMAIN_GROUP: 1 (interpreted as POSIX GID domain);
    LOCAL_DOMAIN_ORG: 2.
    Parameters:
    
    localDomain - a predefined local domain enumeration
    
    localIdentifier - a local identifier
    
    Returns:
    
    a UUIDv2
    
    See Also:
    
    UuidLocalDomain, DceSecurityFactory
  - getDceSecurityWithMac
```
public static UUID getDceSecurityWithMac(UuidLocalDomain localDomain,
                                         int localIdentifier)
```
    Returns a DCE Security unique identifier (UUIDv2).
    Local domains predefined by DCE 1.1 Authentication and Security Services (Chapter 11):
    
    LOCAL_DOMAIN_PERSON: 0 (interpreted as POSIX UID domain);
    LOCAL_DOMAIN_GROUP: 1 (interpreted as POSIX GID domain);
    LOCAL_DOMAIN_ORG: 2.
    Parameters:
    
    localDomain - a predefined local domain enumeration
    
    localIdentifier - a local identifier
    
    Returns:
    
    a UUIDv2
    
    See Also:
    
    UuidLocalDomain, DceSecurityFactory
  - getDceSecurityWithHash
```
public static UUID getDceSecurityWithHash(UuidLocalDomain localDomain,
                                          int localIdentifier)
```
    Returns a DCE Security unique identifier (UUIDv2).
    Local domains predefined by DCE 1.1 Authentication and Security Services (Chapter 11):
    
    LOCAL_DOMAIN_PERSON: 0 (interpreted as POSIX UID domain);
    LOCAL_DOMAIN_GROUP: 1 (interpreted as POSIX GID domain);
    LOCAL_DOMAIN_ORG: 2.
    Parameters:
    
    localDomain - a predefined local domain enumeration
    
    localIdentifier - a local identifier
    
    Returns:
    
    a UUIDv2
    
    See Also:
    
    UuidLocalDomain, DceSecurityFactory
  - getDceSecurityWithRandom
```
public static UUID getDceSecurityWithRandom(UuidLocalDomain localDomain,
                                            int localIdentifier)
```
    Returns a DCE Security unique identifier (UUIDv2).
    Local domains predefined by DCE 1.1 Authentication and Security Services (Chapter 11):
    
    LOCAL_DOMAIN_PERSON: 0 (interpreted as POSIX UID domain);
    LOCAL_DOMAIN_GROUP: 1 (interpreted as POSIX GID domain);
    LOCAL_DOMAIN_ORG: 2.
    Parameters:
    
    localDomain - a predefined local domain enumeration
    
    localIdentifier - a local identifier
    
    Returns:
    
    a UUIDv2
    
    See Also:
    
    UuidLocalDomain, DceSecurityFactory
  - getPrefixComb
```
public static UUID getPrefixComb()
```
    Returns a Prefix COMB GUID.
    The creation millisecond is a 6 bytes PREFIX is at the MOST significant bits.
    
    Returns:
    
    a GUID
    
    See Also:
    
    PrefixCombFactory, The Cost of GUIDs as Primary Keys
  - getPrefixCombMin
```
public static UUID getPrefixCombMin(Instant instant)
```
    Returns the minimum Prefix COMB GUID for a given instant.
    The 48 bits of the time component are filled with the bits of the given instant and the other 74 bits are all set to ZERO.
    For example, the minimum GUID for 2022-02-22 22:22:22.222 is `017f2387-460e-4000-8000-000000000000`, where `017f2387-460e` is the timestamp in hexadecimal.
    It can be useful to find all records before or after a specific timestamp in a table without a `created_at` field.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a GUID
  - getPrefixCombMax
```
public static UUID getPrefixCombMax(Instant instant)
```
    Returns the maximum Prefix COMB GUID for a given instant.
    The 48 bits of the time component are filled with the bits of the given instant and the other 74 bits are all set to ONE.
    For example, the maximum GUID for 2022-02-22 22:22:22.222 is `017f2387-460e-4fff-bfff-ffffffffffff`, where `017f2387-460e` is the timestamp in hexadecimal.
    It can be useful to find all records before or after a specific timestamp in a table without a `created_at` field.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a GUID
  - getSuffixComb
```
public static UUID getSuffixComb()
```
    Returns a Suffix COMB GUID. The creation millisecond is a 6 bytes SUFFIX is at the LEAST significant bits.
    
    Returns:
    
    a GUID
    
    See Also:
    
    SuffixCombFactory, The Cost of GUIDs as Primary Keys
  - getSuffixCombMin
```
public static UUID getSuffixCombMin(Instant instant)
```
    Returns the minimum Suffix COMB GUID for a given instant.
    The 48 bits of the time component are filled with the bits of the given instant and the other 74 bits are all set to ZERO.
    For example, the minimum GUID for 2022-02-22 22:22:22.222 is `00000000-0000-4000-8000-017f2387460e`, where `017f2387460e` is the timestamp in hexadecimal.
    It can be useful to find all records before or after a specific timestamp in a table without a `created_at` field.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a GUID
  - getSuffixCombMax
```
public static UUID getSuffixCombMax(Instant instant)
```
    Returns the maximum Suffix COMB GUID for a given instant.
    The 48 bits of the time component are filled with the bits of the given instant and the other 74 bits are all set to ONE.
    For example, the maximum GUID for 2022-02-22 22:22:22.222 is `ffffffff-ffff-4fff-bfff-017f2387460e`, where `017f2387460e` is the timestamp in hexadecimal.
    It can be useful to find all records before or after a specific timestamp in a table without a `created_at` field.
    
    Parameters:
    
    instant - a given instant
    
    Returns:
    
    a GUID
  - getShortPrefixComb
```
public static UUID getShortPrefixComb()
```
    Returns n Short Prefix COMB GUID.
    The creation minute is a 2 bytes PREFIX is at the MOST significant bits.
    The prefix wraps around every ~45 days (2^16/60/24 = ~45).
    
    Returns:
    
    a GUID
    
    See Also:
    
    ShortPrefixCombFactory, Sequential UUID Generators
  - getShortSuffixComb
```
public static UUID getShortSuffixComb()
```
    Returns a Short Suffix COMB GUID.
    The creation minute is a 2 bytes SUFFIX is at the LEAST significant bits.
    The suffix wraps around every ~45 days (2^16/60/24 = ~45).
    
    Returns:
    
    a GUID
    
    See Also:
    
    ShortSuffixCombFactory, Sequential UUID Generators

Class UuidCreator

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NAMESPACE_DNS

NAMESPACE_URL

NAMESPACE_OID

NAMESPACE_X500

LOCAL_DOMAIN_PERSON

LOCAL_DOMAIN_GROUP

LOCAL_DOMAIN_ORG

Method Detail

toBytes

fromBytes

toString

fromString

getNil

getMax

getRandomBased

getRandomBasedFast

getTimeBased

getTimeBasedWithMac

getTimeBasedWithHash

getTimeBasedWithRandom

getTimeBased

getTimeBasedMin

getTimeBasedMax

getTimeOrdered

getTimeOrderedWithMac

getTimeOrderedWithHash

getTimeOrderedWithRandom

getTimeOrdered

getTimeOrderedMin

getTimeOrderedMax

getTimeOrderedEpoch

getTimeOrderedEpochPlus1

getTimeOrderedEpochPlusN

getTimeOrderedEpochMin

getTimeOrderedEpochMax

getTimeOrderedEpoch

getNameBasedMd5

getNameBasedMd5

getNameBasedMd5

getNameBasedMd5

getNameBasedMd5

getNameBasedMd5

getNameBasedMd5

getNameBasedMd5

getNameBasedMd5

getNameBasedMd5

getNameBasedMd5

getNameBasedMd5

getNameBasedSha1

getNameBasedSha1

getNameBasedSha1

getNameBasedSha1

getNameBasedSha1

getNameBasedSha1

getNameBasedSha1

getNameBasedSha1

getNameBasedSha1

getNameBasedSha1

getNameBasedSha1

getNameBasedSha1

getDceSecurity

getDceSecurityWithMac

getDceSecurityWithHash

getDceSecurityWithRandom

getDceSecurity

getDceSecurityWithMac

getDceSecurityWithHash

getDceSecurityWithRandom

getPrefixComb

getPrefixCombMin

getPrefixCombMax

getSuffixComb

getSuffixCombMin

getSuffixCombMax

getShortPrefixComb