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Java Intro to Java Web Development with Spark Bells and Whistles Building Our Model

Why make an interface?

I didn't really understand what the point of using an interface is.

3 Answers

in java there is no multiple class inheritance, you can only use one, but you can implement multiple interfaces to inherit their additional functionality.

there is a long and illustrated the answer here too https://softwareengineering.stackexchange.com/questions/145437/why-use-an-interface-when-the-class-can-directly-implement-the-functions

that one finally made it click to me

Thank you!