UUID variant() in Java

variant(): This method is available in java.util.UUID class of Java.

Syntax:

int java.util.UUID.variant()

This method returns the variant number associated with this UUID. The variant number describes the layout of the UUID.

The variant number has the following meaning: 

1. 0 Reserved for NCS backward compatibility.

2. 2 IETF RFC 4122(Leach-Salz), used by this class.

3. 6 Reserved, Microsoft Corporation backward compatibility.

4. 7 Reserved for future definition.

Parameters: NA

Returns: The variant number of this UUID.

Exceptions: NA

Approach

Java

import java.util.UUID;

public class UUIDvariant {
    public static void main(String[] args) {

        UUID uuid = 
        UUID.fromString("3800-8cf0-11bd-b23e-10b96e4ef00d");

        System.out.println(uuid.variant());
    }
}

Output:

2

Some other methods of UUID

clockSequence(): This method returns the clock sequence value associated with this UUID.

compareTo(UUID): This method compares this UUID with the specified UUID.

equals(Object): This method compares this object to the specified object.

UUID.fromString(String): This method creates a UUID from the string standard representation as described in the toString method.

getLeastSignificantBits(): This method returns the least significant 64 bits of this UUID's 128-bit value.

getMostSignificantBits(): This method returns the most significant 64 bits of this UUID's 128-bit value.

hashCode(): This method returns a hash code for this UUID.

UUID.nameUUIDFromBytes(byte[]): Static factory to retrieve a type 3 UUID based on the specified byte array.

node(): The node value associated with this UUID.

UUID.randomUUID(): Static factory to retrieve a type 4 UUID.

timestamp(): This method returns the timestamp value associated with this UUID.

toString(): This method returns a String object representing this UUID.

variant(): This method returns the variant number associated with this UUID.

version(): This method returns the version number associated with this UUID.