Default methods are introduced in Java 8. The main purpose of default method is to make possible evolving an existing API in compatible way. Interfaces can contain method implementation for which implementing class doesn’t need to provide implementation.
Kafka unit test Framework to help in writing Integration Test .
Java Map interface doesn’t provide possibility to have multiple keys for single entry. Let’s see what are the possible workarounds.
For integration test a embedded zookeeper module
Find random free port available for binding .
Aerospike Unit Test framework to run test on Aerospike as part of maven module
Avro to Row conversion
In the post we will show what problems Java Date has. In Java 1.0 only support for date and time was the java.util.Date class. The usability of this class is harmed by some wrong design decisions.
Understanding Spark Serialization , and in the process try to understand when to use lambada function , static,anonymous class and transient references
Today we will see how to load and read from property file in Spring 4 using @PropertySource annotation and Environment class.