ClassCastException for same class on slim3 for Google App Engine
Bug: A class cast exception like the following is thrown – class x.y.z.MyClass cannot be cast to class x.y.z.MyClass Reason: The class loaders for both th...
Author: Kj
Kj [/.] Sreekumar programs computers as a hobby and profession. Into programming from his school days, Sree uses Codemarvels to key in facts and fixes he finds interesting while working on different projects. Some of the articles here give away a few shades of his philosophical leanings too.
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...
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="te...
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. KjKj [/.] Sreekumar programs computers as a hobby and profession. Into programming from his school day...
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...
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...