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Java reflection exception5/20/2023 ![]() Moreover, not all issues can be identified and fixed at compile time. Maintenance overload – The code becomes obscure leading to difficulty in understanding and debugging.However, Reflection has a considerable cost: This will give an initial impression that Reflection is some sort of panacea and should be used more often in day-to-day to programming activities. There are many more frameworks that use Reflection API as it provides a convenient mechanism to assess user defined classes and methods without any prior information. Tomcat – Reflection is used to forward the request to correct module by parsing their web.xml files and request URI.Struts – The data submitted by either GET or POST request is automatically mapped to corresponding methods using Reflection API.Spring – Uses Reflection to support Dependency Injection by creating objects which are specified in the configuration file as beans.JUnit – Uses Reflection to parse methods annotated with and then invoke them.Hibernate – Uses Reflection to fetch the data required to persist the object.Eclipse – Content Assist feature uses Reflection to list down all the public properties and method that the object class contains.Many popular Java frameworks use Reflection: The JDK ships with a group of classes that are bundled in the package specifically for this purpose. To use Java reflection, we don’t need to include any special jars, any special configuration or Maven dependencies. You can use Reflection API by accessing the classes provided in JDK package. ![]() Reflection can also be used to instantiate objects, invoke methods, and change field values. ![]() Java Reflection API provides the ability to inspect and modify Java classes, fields, method, and constructors at runtime.
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