The nameUUIDFromBytes() method of UUID class in Java is generally used to retrieve a third type name based UUID based on the specified byte array. This is used as a static factory method.
Syntax:
public static UUID nameUUIDFromBytes(byte[] byte_name)
Parameters: This method accepts a parameter byte_name which refers to the byte array that is used to construct a UUID.
Return Value: This method returns an UUID instance generated from a specified array.
Below programs illustrate the working of nameUUIDFromBytes() method:
Program 1:
// Java code to illustrate nameUUIDFromBytes() method  import java.util.*;  public class UUID_Demo {    public static void main(String[] args)    {          // Creating a byte array        byte[] byte_name            = { 50, 40, 30, 20, 10 };          // Printing the byte[]        System.out.println("Specified byte array: "                           + Arrays.toString(byte_name));          // Creating an UUID from byte        UUID UU_ID            = UUID                  .nameUUIDFromBytes(byte_name);          // Displaying the UUID value        System.out.println("UUID value from byte: "                           + UU_ID);    }} |
Output:
Specified byte array: [50, 40, 30, 20, 10] UUID value from byte: d66541c4-a9db-3308-8c67-bbf87dc0df8b
Program 2:
// Java code to illustrate nameUUIDFromBytes() method  import java.util.*;  public class UUID_Demo {    public static void main(String[] args)    {          // Creating a byte array        byte[] byte_name            = { 10, 15, 1, 45, 13, 20, 71 };          // Printing the byte[]        System.out.println("Specified byte array: "                           + Arrays.toString(byte_name));          // Creating an UUID from byte        UUID UU_ID            = UUID                  .nameUUIDFromBytes(byte_name);          // Displaying the UUID value        System.out.println("UUID value from byte: "                           + UU_ID);    }} |
Output:
Specified byte array: [10, 15, 1, 45, 13, 20, 71] UUID value from byte: 15fe1179-e857-306b-ad67-b2388e006c8a
