Naxos Software & Technology Blog

An object clone refers to an object which has exactly the same state as the original object. Java by default provides only support for making shallow copies of objects i.e if Java object to be copied contain mutable types like Vector then only their references would be copied and not the actual objects. To overcome this disadvantage Deep copying of objects is recommended. This article explains both the techniques with examples.

Writing unit test during development phase is very popular.It often happens that some modules have dependencies on external modules like servlet containers ,databases etc. Teams working together also have inter-related modules. Writing unit tests for these modules is difficult because of their possible unavailability during development. Besides, it should be possible to test a module in isolation for it's own functionality without taking any dependencies into account. Java mock objects enable coders to write unit tests which work in isolation.

I will show a small example which utilizes EasyMock library for mocking objects for given interfaces.

Milyn Smooks is a very powerful Java API for processing various representations of data formats like XML, CSV, EDI and Java. It is actively being used in JBoss ESB 4.0 for data transformation. Because this is not a Smooks tutorial I will not go deep inside Smooks capabilities. I recommend the Milyn Smooks Website for further information.

What I demonstrate here is a small Java-to-Java object transformation example using Smooks v1.1.