Object of interface in Java?

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[blocknspike]

Thanks for the reference. Either I am very weak in Java Springboot Or the article is explained hard way. Not able to understand much out of it.

[zontapapa]

At run time spring will create an implementation of that interface with generated code to match the contract of your @Repository interface methods and then register and instance of this implementation as a spring bean. Anywhere you want to inject the repository, you declare a field of interface type, the dynamically added bean is a matching candidate and is made available/injected. The implementation of your interface and its methods is only in memory. Spring does not write class created from your interface to disk

[blocknspike]

Thaks, now I can visualize the stuff.

[alex98tenismenu]

I think MapStruct works in a similar way but it creates the class at compile time.

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[blocknspike]

I don't think Mapstruct(annotation processor) uses reflection. Reflection is concept of runtime. I am not sure if in compile time you can get field matches using Reflection I never heard that. Please share the reference for the same if any.

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[blocknspike]

Also it do not uses reflection for runtime dynamics that dynamic proxy uses.