GHads mind

developers thoughts & finds

Create unique identifiers in Java – UUID

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Sometimes you have the need for unique identifiers. Luckily, Java provides an easy way for creating globaly unique strings:

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) );


UUID One: 067e6162-3b6f-4ae2-a171-2470b63dff00
UUID Two: 54947df8-0e9e-4471-a2f9-9af509fb5889

Thanks to Java Practices for providing this usefull piece of information!

Written by ghads

September 19, 2008 at 9:52 am

Posted in Java development

Tagged with , ,

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