Avoiding null variables while serializing with Jackson
I perform some CRUD operation by consuming REST APIs. Some of the entities I want to create do not have […]
Spring REST
Ansible, linux
Ansible: Missing sudo password
So here is the another error while getting the uname of the remote boxes After executing it with explicit become […]
Ansible
Ansible: Get hostname of the machines
To get the hostnames of the machines using ansible command
Ansible
Failed to connect to the host via ssh: user@IP: Permission denied (publickey,password).”
I tried to ping all servers in Ansible This is what I have in /etc/ansible/hosts file My ping command failed. […]
Announcement, mysql, PHP, Spring Boot
Grassfield Tamil Blog Aggregator
I’m happy to introduce the brand new blog aggregator www.grassfield.org. Today is the day 1 🙂 This aggregates Tamil and […]
Errors, Spring Boot CommandLineRunner, swing
Nexted exception is java.awt.HeadlessException
This is what I get when I start my SpringBoot application, built using Java Swing. Adding the headless JVM param […]
core java
keytool error: java.io.FileNotFoundException: cacerts (Access is denied)
When you import SSL certificate to default keystore cacerts using command prompt, you may hit with this. keytool error: java.io.FileNotFoundException: […]
linux, mysql, PHP
Uncaught Error: Cannot pass parameter 4 by reference
This was the PHP code that threw this exception. Uncaught Error: Cannot pass parameter 4 by reference PHP error: “Cannot […]
Spring REST
Jackson JSON Capitalization: Unrecognized field
Hi, I need to covert the following snippet of JSON response to its relevant object. The key is ComponentType not […]
jQuery
Hide blocks in jQuery
The above snippet will help to hide the given blocks like in paragraph, content and unordered list blocks. Initially it […]