UUIDGenerator (Apache Tomcat 8.5.57 API Documentation)

org.apache.catalina.tribes.util

## Class UUIDGenerator

- java.lang.Object
- - org.apache.catalina.tribes.util.UUIDGenerator

-     public class UUIDGenerator
      extends Object

  simple generation of a UUID
  Version:
    1.0

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static int` | `BITS_PER_BYTE`
    `static int` | `BYTES_PER_INT`
    `protected static Random` | `rand`
    `protected static SecureRandom` | `secrand`
    `protected static StringManager` | `sm`
    `static int` | `UUID_LENGTH`
    `static int` | `UUID_VERSION`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `UUIDGenerator()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static void` | `nextBytes(byte[] into, int offset, int length, Random r)` Same as java.util.Random.nextBytes except this one we dont have to allocate a new byte array
    `static byte[]` | `randomUUID(boolean secure)`
    `static byte[]` | `randomUUID(boolean secure, byte[] into, int offset)`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### sm

          protected static final StringManager sm

    - #### UUID_LENGTH

          public static final int UUID_LENGTH

      See Also:
        Constant Field Values

    - #### UUID_VERSION

          public static final int UUID_VERSION

      See Also:
        Constant Field Values

    - #### BYTES_PER_INT

          public static final int BYTES_PER_INT

      See Also:
        Constant Field Values

    - #### BITS_PER_BYTE

          public static final int BITS_PER_BYTE

      See Also:
        Constant Field Values

    - #### secrand

          protected static final SecureRandom secrand

    - #### rand

          protected static final Random rand

  - ### Constructor Detail

    - #### UUIDGenerator

          public UUIDGenerator()

  - ### Method Detail

    - #### randomUUID

          public static byte[] randomUUID(boolean secure)

    - #### randomUUID

          public static byte[] randomUUID(boolean secure,
                          byte[] into,
                          int offset)

    - #### nextBytes

          public static void nextBytes(byte[] into,
                       int offset,
                       int length,
                       Random r)

      Same as java.util.Random.nextBytes except this one we dont have to allocate a new byte array
      Parameters:
        `into` - byte[]
        `offset` - int
        `length` - int
        `r` - Random

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