There are various good reasons to place your Java web application that is running in the Apache Tomcat behind a reverse proxy: Load balancing, implementing a TLS termination proxy or adding a web application firewall to the mix are some examples.

Working with the Java Streaming API can help you in many ways but here I would like to show you how to use the Collectors groupingBy method. This helps you to collect the elements from the stream in groups or buckets. The setup We have an Employee class that holds the name, the department, the

I would like to show you how to create a pretty simple in memory cache in Java that can hold a single object. This may help you to take some load off your database for example.

In this short advice I would like to show you how to create null-safe code when working with unset data in a Java Bean or some API that you are using which may return a null reference. It will be an easy to read one liner.