Generate GUID Online

How to create a guid with Java

    import java.util.UUID;
 
    public class RandomStringUUID {
        public static void main(String[] args) {
            UUID uuid = UUID.randomUUID();
            String randomUUIDString = uuid.toString();
 
            System.out.println("Random UUID String = " + randomUUIDString);
            System.out.println("UUID version       = " + uuid.version());
            System.out.println("UUID variant       = " + uuid.variant());
        }
    }
    

How to create a guid with C#

    Guid guid = Guid.NewGuid();
    string guidString = guid.ToString();
    

How to create a guid with C++ (Windows)

    #include <rpc.h>
    #pragma comment(lib, "Rpcrt4.lib")

    ...

    UUID uuid;
    ::ZeroMemory(&uuid, sizeof(UUID));
    // UuidFromString() function
    ::UuidCreate(&uuid);
    // To convert uuid to string, use the UuidToString() function
    WCHAR* wszUuid = NULL;
    ::UuidToStringW(&uuid, &wszUuid);
    if(wszUuid != NULL)
    {
      ::RpcStringFree(&wszUuid);
      wszUuid = NULL;
    }
    

How to create a guid with Objective-C (iOS 6 or later)

    NSString *UUID = [[NSUUID UUID] UUIDString];