Multiple ssl certificates on Tomcat using SNI

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In this tutorial, we will look at installing multiple SSL certificates on Tomcat using SNI. Tomcat 8.5.x allows you to install a separate SSL certificate for each virtual host in your tomcat installation. This works with a single IP because of the SNI feature in Tomcat 8.5.x and Java 8. (Java has implemented SNI since … Read more

Install Apache Tomcat Native

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Steps to install apache tomcat native and its dependencies If you are using Apache Tomcat in production then it would be good to install Apache Tomcat native library as it has some optimizations for production use. Below are the steps to install it. The steps were performed on an AWS EC2 instance (Amazon Linux), but … Read more

AWS VPC Tutorial – Part II subnets

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In this AWS VPC tutorial, we will look at how to create the VPC, public and private subnets, route table, and an internet gateway. AWS VPC Tutorial – Recap In the previous tutorial we saw an introduction to Amazon VPC and also looked at the key concepts in VPC. Here’s the diagram of what we … Read more

Java Magazine January – Febrary 2017

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Here’s the Java magazine for Jan – Feb 2017. It Covers the Following Topics: What topics does Java Magazine Jan – Feb 2017 cover A look at Polygot Maven Configuration. Java and JVM tools Design and Construction of modern build tools Creating Debugging Tools Blockchain, Scala, Java in containers [pdf-embedder url=”https://s3.amazonaws.com/java-resources/Java+Magazine+JanuaryFebruary+2017.pdf”]

Java Magazine Nov – Dec 2016

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Here’s the Java magazine Nov – Dec 2016. The focus on this magazine is JUnit 5. It Covers the Following Topics: What topics does Java Magazine Nov – Dec 2016 cover A look at how NetBeans is moving away from Oracle to Apache Software Foundation. An interview with the creator of JUnit 5 – Kent … Read more

AWS VPC Tutorial Part III Elastic IP and NAT

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In this AWS VPC Tutorial, we will learn how to create an Elastic IP address, a NAT Gateway, and accessing the internet from private subnet using the NAT gateway. This is the third in the 3-series tutorial, the first tutorial introduced the key concepts and tutorial problem and the second tutorial looked at creating VPC, … Read more

AWS VPC Tutorial – Part I Introduction

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In this AWS VPC tutorial, we will learn how to create a VPC; create public and private subnets that cover Multiple Availability zone; create CIDR blocks for each subnet; add Internet Gateways and NAT Gateways, and modify route table. AWS VPC Tutorial – Introduction to Concepts What is AWS VPC Amazon VPC is your own … Read more

Java Method Overloading and Conditions.

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What is Java Method Overloading Java method Overloading is a feature where two methods in a class can have the same name provided they have different parameter lists. So if you have a class called ClassA, it can have two methods both named methodA, however, the two methods should take in different parameters. for example, … Read more

Amazon AWS VPC Introduction and Features

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In this AWS VPC tutorial, we will see an introduction to AWS VPC. We will also look at some of the key features of Amazon VPC. What is AWS VPC? AWS VPC or Virtual Private Cloud is an Amazon service that allows you to create you own virtual network inside Amazon cloud and to use … Read more