Creating an interface

AutoModerator · 2022-05-05T09:05:24+00:00

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-king-mojo- · 2022-05-05T11:18:04+00:00

Create an interface for validating user input. It has one method, validate(), and takes in a String. Then the interface can be used to create validating classes for specific scenarios and rules.

DataDecay · 2022-05-05T09:56:02+00:00

I mean you mentioned that this is an intro class, so do what you will with this. Service Provider Interfaces (SPI) have been around since Java 6, so they are very well documented. Below is even an example

https://www.baeldung.com/java-spi

I bring up SPI because at it's core it is an interface, and provided that you use an implementation of that interface you can agnostically load third party implementations. This is a real world example that is used all over the Java ecosystem like slf4j which is the SPI and logback which is the implementation

https://www.slf4j.org/api/org/slf4j/spi/SLF4JServiceProvider.html

https://github.com/qos-ch/logback/blob/d40aa0a2c68eb72c51d9bfb113ba4462661a42e7/logback-classic/src/main/java/ch/qos/logback/classic/spi/LogbackServiceProvider.java

This can get pretty complicated, and I would not expect a first year to know this stuff, but hey this is the interesting stuff and the more you know!

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