如何在Java中生成UUID / GUID

java.util.UUID

JDK1.5

UUID.randomUUID（）

UUID

UUID.toString（）

import java.util.UUID;

public class RandomStrUUID {
public static void main(String[] args) {
// Creating a random UUID (Universally unique identifier).
UUID uuid = UUID.randomUUID();
String uuidStr = uuid.toString();

System.out.println("Random UUID String = " + uuidStr);
System.out.println("UUID version       = " + uuid.version());
System.out.println("UUID variant       = " + uuid.variant());
}
}