MySQL Data migration from one server box to another
Here’s a quick way to move data from one MySQL server to another Let source box be ServerOne, and the target box be ServerTwo. (user-names and schema names are ...
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.
Add Indic fonts for use by Java in Ubuntu server
This is how I could add Indic fonts to Ubuntu server and make them available for use by Java – Run on teminal – sudo apt-get install fonts-indic sudo apt-get in...
Fix : Cassandra not accessible from outside the local machine.
Problem: In Single node setup of cassandra, after installation and starting Cassandra, the native port (9042) is not accessible from outside the local box. Reas...
Install Artefactory Maven repository on Ubuntu 16.04
Follow these steps to install Artifactory Maven repository on Ubuntu 16.04 ( terminal commands, mostly )- wget -c -O- “https://bintray.com/user/downloadSubjectP...
Spring boot and Open UI5 error : JSON.parse: unexpected end of data – when setting resourceroots
Problem : After setting the tag data-sap-ui-resourceroots the UI5 loading stops with the error “JSON.parse: unexpected end of data …” Reason : Spring boot thyme...
Spring boot : Testing Cassandra Repositories using Cassandra Unit
This short tutorial is about getting test classes running for the Cassandra repositories in a Spring boot application. The example provided uses Maven, Spring-d...
Spring boot application : local URL doesn’t load in an IFrame
Problem : Application URLs (local urls) not loading in iframe inside an application UI. Reason : Spring sets the X-Frame-Options to Deny by default. Fix : Allow...
How to show custom favicon in Vaadin UI ?
Add this custom Vaadin servlet to show a different favicon (other than the Vaadin default) in your UI application – [java] import com.vaadin.server.*; import co...
A Javascript hack for Mohanlal-Rekha puzzle
Click on any node to find Mohanlal’s relation to that person (default selection is actress Rekha). Disclaimer : Based of the Whatsapp forward* only, which is gi...
Openfire does not listen to port 5222
Problem : Openfire server does not listen to port 5222. Symptoms : netstat -tulpn | grep LISTEN – will not show ports 5222 or 5223. tail -1000 /opt/openfire/log...