jqGrid cell data disappears on clicking other cells
Bug: jqGrid cell data in a previously edited cell disappears on editing other rows. This usually occurs after a cell or row value is edited programmatically. Re...
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.
UTF-8 encoding on J2EE
A 3 step method to apply UTF-8 encoding to J2EE applications. 1. Add the following directives to the page included in ALL jsps. <%@ page contentType="text/ht...
AirRaid
An MS DOS game where you shoot opponent fighter plane and save yourself from incoming missiles 😉 Download code here. (Note/Disclaimer : Last successful compilat...
Brikz
A simple brick game written in C++ Download code here. (Note/Disclaimer : Last successful compilation of most of the programs in this category were done from 20...
Mines
A minesweeper game programmed in C++. Download code here. Update, August 2026 — this download was lost when the site went down. Neither the source code no...
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...
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 ...