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spring-interview-questions-answers

Spring @Bean and PropertyPlaceHolderConfigurer

I was recently stumped by what I thought was going to be a fairly straightforward implementation – Consider the following Spring Java based bean definition file ( @Configuration):                 package ...
spring-interview-questions-answers

Spring MVC Error handling flow

There are broadly three ways of handling an exception flow using Spring MVC, the objective being to intercept any application exception and present a friendly and informative view back ...
spring-interview-questions-answers

Testing Spring “session” scope

In a Spring based Web application, beans can be scoped to the user “session”. This essentially means that state changes to the session scoped bean are only visible in the ...
spring-interview-questions-answers

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 service flow on the contents of the file. Spring Integration is a great fit for ...
spring-interview-questions-answers

Spring Bean names

Spring bean names are straightforward, except for cases where names are not explicitly specified. To start with, Spring bean names for an xml based bean definition is specified this ...
spring-interview-questions-answers

Spring Data JPA and pagination

Let us start with the classic JPA way to support pagination. Consider a simple domain class – A ‘Member’ with attributes first name, last name. To support pagination ...
java-interview-questions-answers

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 fields to JPA entities:                   package ...
spring-interview-questions-answers

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 are a few options ...
spring-interview-questions-answers

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 with Spring ...
junit-logo

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 as the order of test method execution - Class.getMethods(). To quote the Javadoc ...
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