GUID UUID

• http://betterexplained.com/articles/the-quick-guide-to-guids/
• RFC 4122

In Java

• http://stackoverflow.com/questions/2982748/create-a-guid-in-java
• http://stackoverflow.com/questions/3388085/how-to-create-guid-in-java-ee
• http://www.javapractices.com/topic/TopicAction.do?Id=56

import java.util.UUID;

UUID uuid = UUID.randomUUID();
String randomUUIDString = uuid.toString();

import java.util.UUID;

public class GenerateUUID {

  public static final void main(String... aArgs){
    //generate random UUIDs
    UUID idOne = UUID.randomUUID();
    UUID idTwo = UUID.randomUUID();
    log("UUID One: " + idOne);
    log("UUID Two: " + idTwo);
  }

  private static void log(Object aObject){
    System.out.println( String.valueOf(aObject) );
  }
} 

Concerns

• Is it slow?