Interfaces in Java

[frigid rain]

Can you have a body in the methods in an interface? I am trying to follow this JavaDoc to create a spaceship coordinate system, but it gives the interface methods a description of what they should do. Do I implement this in the interface?

[south meadow]

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[fierce holly]

yes, using the default modifier, as shown there

https://dev.java/learn/interfaces/examples/#default-methods

[eternal vale]

You can provide implementation of method in interface using default or static method.
https://www.baeldung.com/java-static-default-methods