MachineId (uuid-creator 3.2.2 API)

java.lang.Object
- com.github.f4b6a3.uuid.util.MachineId

```
public final class MachineId
extends Object
```
Utility class to generate machine ID. It works in three steps: 1. Create a string containing host name, MAC and IP; 2. Create a hash of the string using SHA-256 algorithm; 3. Create the identifier using part of the resulting hash. If the host name, MAC or IP changes, the identifier will also change.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static byte[]`	`getMachineHash()`	Returns the machine hash in a byte array.
`static String`	`getMachineHexa()`	Returns the machine hash in hexadecimal format.
`static long`	`getMachineId()`	Returns a number generated from the machine hash.
`static String`	`getMachineString()`	Returns a string containing host name, MAC and IP.
`static UUID`	`getMachineUuid()`	Returns a UUID generated from the machine hash.

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

- Method Detail
  - getMachineId
```
public static long getMachineId()
```
    Returns a number generated from the machine hash. It uses the first 8 bytes of the machine hash.
    
    Returns:
    
    a number
  - getMachineUuid
```
public static UUID getMachineUuid()
```
    Returns a UUID generated from the machine hash. It uses the first 16 bytes of the machine hash. The UUID version is 4.
    
    Returns:
    
    a UUID
  - getMachineHexa
```
public static String getMachineHexa()
```
    Returns the machine hash in hexadecimal format. The returning string has 64 chars.
    
    Returns:
    
    a string
  - getMachineHash
```
public static byte[] getMachineHash()
```
    Returns the machine hash in a byte array.
    
    Returns:
    
    a byte array
  - getMachineString
```
public static String getMachineString()
```
    Returns a string containing host name, MAC and IP. Output format: "hostname123 11-22-33-44-55-66 123.123.123.123" Note: a network interface may have more than one IP address.
    
    Returns:
    
    a string