How to do validation on different layers.Things do be considered while performing validation on different layers

How to convert framework exception to custom exception

Best practice for writing integration test

Best practice for writing unit test

How to overwrite the default behavior and add custom feature in java

How to independently test web services

Mocking services and test driven development

Things to be considered while writing a remoting framework.

Transaction management in multiple services in java

Writing a custom content management system in java

Writing a custom security in java

Crating a custom validation in java

Writing a custom interceptor in java

Computing data using distributed map reduce in java

How to increase the performance of API

Different styles of security implementation in web in java

Concept behind the implementation of dispatcher servlet.How to extend it.

Writing a distributed session management in java

Writing a distributed caching system in java

Different approaches of writing a web framework.

Writing a plugin based web module using core java

What is header,body and query parameter in web service

Writing a distributed transaction management using java core .

How framework uses proxy for transaction management and remoting

Best way to independently test different layers in different devices

How to write a platform independent type of code

Things to be considered while writing a test driven development

Loading different versions of jar using the class loader

Creating a distributed file system in multiple host using java

Creating a distributed file system in local system using java