Spring custom validation message
The following few step is all you need to create custom validation message.
forEach List
Java 8 lambda provide easy and shorten syntax to iterate over the collection. This example show you to loop over the List<NameValuePair>.
Java Functional Interface – Single method
Normally when we use interface define with a method, we need a class to implements it. With lambda, we can directly implements without a class.
Amazon – Error Deleting Snapshots
I’ve recently took a snapshot quite long time ago for my images. When i tried to delete the snapshot, it prompt me snapshot snap-idxxxx is currently in used by ami-xxxx.
Amazon WorkMail
In this article, I’m going to talk about how I setup amazon workmail within few minutes.
Transfer files from EC2 to S3
This tutorial talked about how to transfer files from EC2 to S3.