I wanted to have Version numbers that get automatically updated when I want to release a new version, so I set about to find out how to do this with Play Framework. I discovered that I could base it on the sbt-release plugin, but it was not so straight forward. Here is my strategy, so that in the end all ...

This post orig­i­nally ran on http://​swag​ger​.io (7/30/2015) I hav­ing been using Play Frame­work as a Java-based, lightning-fast REST back­end frame­work for sev­eral projects. Later, I was was excited to find Swag­ger and worked to inte­grate it into a few projects. As I strug­gled with it the first time, I thought it would be use­ful to share my expe­ri­ence and cre­ate ...

Ok, so you have been using the hiber­nate prop­erty name=“hibernate.hbm2ddl.auto” value=“update” to con­tin­u­ously update your data­base schema, but now you need a com­plete DDL script? Use this method from you Global Class onStart to export the DDL scripts.  Just give it the pack­age name (with path) of your Enti­ties as well as a file name: public void onStart(Application app) { exportDatabaseSchema("models", ...

No mat­ter how sim­ple or com­plex the game is, Java can do the job! On this post, let’s take a look at how begin­ners of Java pro­gram­ming can make a sim­ple, yet fully func­tional slot machine. Slot machines have been around for a long time, but its enter­tain­ment value doesn’t seem to fade one bit. Inter­Casino, the first web­site to offer ...

If you fol­low the Play Frame­work 2 guide for imple­ment­ing authen­ti­ca­tion: http://​www​.playframe​work​.com/​d​o​c​u​m​e​n​t​a​t​i​o​n​/​2​.​2​.​2​/​J​a​v​a​G​u​i​de4 — you will notice that there is no ses­sion time­out in Play Frame­work 2. It was there in Play Frame­work 1, but Play Frame­work 2 fol­lows a dif­fer­ent approach. I you want to imple­ment your own ses­sion time­out, then fol­low the guide for set­ting up authen­ti­ca­tion, by extend­ing ...

I spent hours try­ing to get this to work, and in the end, then prob­lem was that I did not gen­er­ate the CSR (Cer­tifi­cate Request) myself with the keytool. I kept get­ting this error when I tried access­ing Play with https: javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated The prob­lem ended up being that the key­store I cre­ated and imported the SSL cer­tifi­cate ...

So using JPA, Hiber­nate or EBeans is cool when you can just anno­tate your Java classes, but haven’t you always wished you could “gen­er­ate” doc­u­men­ta­tion of your data model from the code? Pulling infor­ma­tion of the the JPA / Hiber­nate  and other val­i­da­tion annotations? Assum­ing you have all those nice Anno­ta­tions in your beans:           @Entity @Table(name ...

Dur­ing yesterday’s per­sonal Hackathon, I started a project which I might intro­duce here some­time. But the coolest rev­e­la­tion was (again) how easy it was to get up and running. Cre­ate a new Play Project Add Secure Social and con­fig­ure it for Twit­ter, and use the InMem­o­ryUserSer­vice from the exam­ples. (all this is described here http://securesocial.ws/guide/getting-started.html and only takes a minute) ...