AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Looking for id/key generator          AppletTalk.com Forum Index -> Java and Databases View previous topic :: View next topic   Author Message Igor Guest Posted: Thu Jul 24, 2003 2:09 pm    Post subject: Looking for id/key generator Hi all, I am looking for an ID/key generator in Java. It can be a class or a package. I need the result to be something like 2AF33Y88 - digits and letters together. It can be fixed size or I have to set the length. Thanks in advance, Igor Back to top Roy Epperson Guest Posted: Thu Jul 24, 2003 2:35 pm    Post subject: Re: Looking for id/key generator Here's a portion of a class I wrote to generate keys. I also have a method to reject offensive words and fragments of words and a method that look into a table of already generated keys to insure the new key is unique. Let me know privately if you're interested in those. private static final String characterMap = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; public static String[] generate(int randomStringLength, int numberOfStrings, Random random){ String ans[] = new String[numberOfStrings]; for(int x= 0; x < numberOfStrings; x++){ StringBuffer sb = new StringBuffer(); for(int n = 0; n sb.append(characterMap.charAt(random.nextInt(61))); } ans[x] = sb.toString(); } return ans; } "Igor" Quote: Hi all, I am looking for an ID/key generator in Java. It can be a class or a package. I need the result to be something like 2AF33Y88 - digits and letters together. It can be fixed size or I have to set the length. Thanks in advance, Igor Back to top Johann Burkard Guest Posted: Thu Jul 24, 2003 9:25 pm    Post subject: Re: Looking for id/key generator Igor wrote: [Please set a Followup-To when posting to multiple groups] Quote: I am looking for an ID/key generator in Java. It can be a class or a package. I need the result to be something like 2AF33Y88 - digits and letters together. If you need unique keys, I implemented the UUID/GUID specification once, it's at http://johannburkard.de/misc/uuid.zip. If you need "safe" passwords, check out http://johannburkard.de/misc/PasswordTools.java. Johann -- Fühle dich bitte nicht auf die Füsse getreten wenn ich dir sage, dass du mit dem Niveau der meisten hier° nicht mithalten kannst. Du lieferst Steil-vorlagen wie ein Troll. Allerliebst. (*Tönnes über mich in <bcdlqr$aul$04$4 (AT) news (DOT) t-online.com>) Back to top Steve Horsley Guest Posted: Thu Jul 24, 2003 9:38 pm    Post subject: Re: Looking for id/key generator On Thu, 24 Jul 2003 22:06:54 +0200, G wrote: Quote: One question. What if you need not duplicated ids? Is it enought if you use both timestamp + thread_id ? Thank you. Can you be sure the same thread won't hand out 2 nummbers within one clock-tick (55mS on Win95)? How about a class that hands out incrementing int values (let it wrap) and concatenate that int value with the current time. You are unlikely to dish out 4 billion IDs within 55mS. Steve Back to top sns Guest Posted: Mon Aug 04, 2003 11:01 pm    Post subject: Re: Looking for id/key generator I would like to have the methods you have mentioned . Would appreciate if you could post it on forum or email it to me. Thanks Originally posted by Roy Epperson Quote: Here's a portion of a class I wrote to generate keys. I also have a method to reject offensive words and fragments of words and a method that look into a table of already generated keys to insure the new key is unique. Let me know privately if you're interested in those. private static final String characterMap = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; public static String[] generate(int randomStringLength, int numberOfStrings, Random random){ String ans[] = new String[numberOfStrings]; for(int x= 0; x wrote in message news:JMRTa.65430$zwL.48820 (AT) news04 (DOT) bloor.is.net.cable.rogers.c- om"]news:JMRTa.65430$zwL.48820 (AT) news04 (DOT) bloor.is.net.cable.rogers.com- [/url]... Hi all, I am looking for an ID/key generator in Java. It can be a class or a package. I need the result to be something like 2AF33Y88 - digits and letters together. It can be fixed size or I have to set the length. Thanks in advance, Igor -- Posted via http://dbforums.com Back to top sns Guest Posted: Thu Aug 07, 2003 5:17 pm    Post subject: Re: Looking for id/key generator Originally posted by sns Quote: Roy, I would like to have the methods you have mentioned . Would appreciate if you could post it on forum or email it to me. Thanks -- Posted via http://dbforums.com Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         AppletTalk.com Forum Index -> Java and Databases All times are GMT Page 1 of 1   Jump to: Select a forum Java Newsgroups----------------Java DiscussionsWeb-based java games comp.lang.java 3D Graphics API's for Java Java: Support and criticism Java System Announcements comp.lang.java.api JavaBeans Java and CORBA Java and Databases comp.lang.java.developer Java GUI Toolkits Java Help comp.lang.java.javascript JVM, native methods and hardware comp.lang.java.misc Java Language Programming Security and Java comp.lang.java.setup Java Software Tools comp.lang.java.tech ibm.software.java.linux  Non-English Java Newsgroups----------------Java Language (German)Language Java (Français)Java (Italian)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.