C Chess
A simple Chess program written in C. Serves as an introduction to basics of programming the game. Download code here. (Note/Disclaimer :Given on as is basis (wr...
Author: Sreekumar Kj
Sreekumar (KJ) has been a hobby programmer from school days. Codemarvels is his personal blog from the year 2010, where he writes about technology, philosophy, society and a bit about physics.
He now runs a conversational AI company - DheeYantra - focusing his efforts to help businesses improve operational efficiency using digital employees powered by AI.
Solution to Hibernate error: Unknown column ‘******’ in ‘order clause’
Bug: A above exception thrown when using hibernate. Reason: This error occurs usually because of a misplaced “order by” clause. If in a many to many mapping, th...
Solution to MySQLSyntaxErrorException: Unknown column ‘xxxxx_.elt’ in ‘field list’
Bug: The above exception thrown when using hibernate. Reason: This usually occurs when column name is not mentioned in many-to-many node. The correct mapping fo...
Spring security 3 – How to display login errors ?
Heres how we display different error messages for the different cases of authentication failures like bad credentials, credentials expired etc. Step 1. Configur...
Error: attribute property is mandatory for tag authentication
Bug: The exception thrown when migrating to spring 3. Reason: This exception thrown when migrating to spring-security 3 occurs due to spring 3 (authentication ...
Solve MySQL ERROR 1005: Can’t create table (errno: 150)
Bug: Above error occurs when rebuilding a database from the SQL script. Reason: This error usually occurs when the table being created cannot fulfill a foreign ...
How to enable CAS without SSL
This is a tiny tutorial on steps required to enable CAS (Jasig, v3.4x ) single-sign-out without SSL. These are the steps involved to remove dependency on SSL – ...
Apache : RewriteRule vs Alias
A small note on order of execution of a RewriteRule directive and a folder Alias on Apache HTTPD – RewriteRule is always executed before the Alias, thus making ...
Enabling SSL on a Tomcat “devl” machine (Windows)
These are the steps involved to enable SSL on Tomcat on developer machine for test purposes. 1. Create a certificate key store Run this command in the command p...
BoshServlet – Bugs and fixes
No bugs ??? Sreekumar KjSreekumar (KJ) has been a hobby programmer from school days. Codemarvels is his personal blog from the year 2010, where he writes about ...