Implementation method of generating GUID based on Java _java

A GUID is a 128-bit long number, typically represented by a 16 binary. The core idea of the algorithm is to combine the machine's network card, local time, and a random number to generate the GUID. Theoretically, if a machine produces 10 million GUIDs per second, it can be guaranteed (in the sense of probability) not to repeat for 3,240 years.

Copy Code code as follows:

Package com.cn.str;
Import Java.util.UUID;
/**
* Create GUID
* @author Administrator
*
*/
public class CreateGUID {

public static final String Generateguid () {
UUID uuid = Uuid.randomuuid ();
return uuid.tostring ();
}
/**
* @param args
*/
public static void Main (string[] args) {
TODO auto-generated Method Stub
System.out.println (Generateguid ());
}
}

The UUID is a new class in 1.5 that, under Java.util, can produce a supposedly globally unique ID