Spring Integration File Polling and Tests

I recently implemented a small project where we had to poll a folder for new files and then trigger a…

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Spring Bean names

Spring bean names are straightforward, except for cases where names are not explicitly specified. To start with, Spring bean names…

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Spring Data JPA and pagination

Let us start with the classic JPA way to support pagination. Consider a simple domain class – A ‘Member’ with…

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Mixin in Java with Aspects – for a Scala traits sample

Scala traits allow new behaviors to be mixed into a class. Consider two traits to add auditing and version related…

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Spring Property Placeholder Configurer – A few not so obvious options

Spring’s PropertySourcesPlaceholderConfigurer is used for externalizing properties from the Spring bean definitions defined in XML or using Java Config. There…

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Spring MVC – Customizing RequestMappingHandlerMapping

When Spring MVC is configured using <mvc:annotation-driven/> in an xml bean definition file, internally a component called RequestMappingHandlerMapping gets registered…

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JUnit test method ordering

Junit until version 4.10 uses the order of test methods in a test class as returned by the reflection API…

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Json deserialization with Jackson and Super type tokens

Datatables is a jquery plugin to present tabular information – it can enhance a simple table or can use a…

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Composing Java annotations

The allowed attribute types of a Java annotations are deliberately very restrictive, however some clean composite annotation types are possible…

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