You can retrieve the current working directory by calling System.getProperty(“user.dir”). This returns the root folder of your current java project. Example package com.memorynotfound.file; import java.io.File; public class FindCurrentWorkingDirectory { public static void main(String… args){...
The System class maintains a Properties object that describes the configuration of the current working environment. Within these properties there exists one that identifies the users home directory. In most scenarios this will work,...
GSON introduced the @Since annotation to support multiple versions of the same object. We can use this annotation on Classes and Fields. In order to enable this feature we need to register a version...
When using auto component scanning, only the special marker interfaces and annotations that itself are annotated with @Component are eligible. We can modify and/or extend this behavior by applying custom filters. We can use...
You can define your spring beans manually or let spring automatically discover stereotyped classes and register corresponding bean definitions with the application context. Spring scans for special marker annotations, which allows spring to auto-detect...
When Handling Multiple Dependencies with @Primary or Handling Multiple Dependencies with @Qualifier are not sufficient or you want to create your own custom @Qualifier Annotations for some reason. Spring allows you to create your...
Handling multiple autowire candidates with @Primary is effective when only one primary candidate can be determined for multiple autowire candidates. When you need more control over the selection process, you can use spring @Qualifier...
In spring, dependency injection is done default by type, this means that when there are multiple dependencies with the same type a NoUniqueBeanDefinitionException exception will be thrown. Indicating that only one candidate can be...
When working on a project with many team members, it is good to have some conventions. One of this conventions could be that you agree to use the same method name for initialization and...
The @PostConstruct and @PreDestroy are standard Java JSR-250 lifecycle annotations. Spring supports these annotations using the CommonAnnotationBeanPostProcessor. By annotation void no-argument signature methods with these annotations, your methods are eligible for initialization and destruction...
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