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Kotlin Programming: The Big Nerd Ranch Guide, First Edition
book

Kotlin Programming: The Big Nerd Ranch Guide, First Edition

by Josh Skeen, David Greenhalgh
July 2018
Intermediate to advanced content levelIntermediate to advanced
400 pages
12h 14m
English
Big Nerd Ranch Guides
Content preview from Kotlin Programming: The Big Nerd Ranch Guide, First Edition

Implementing an Interface

To use an interface, we say that you implement it on a class. There are two parts to this: First, you declare that the class implements the interface. Then, you must ensure that the class provides implementations for all of the properties and functions specified in the interface.

Use the : operator to implement the Fightable interface on Player.

Listing 16.2  Implementing an interface (Player.kt)

class Player(_name: String,
        override var healthPoints: Int = 100,
        var isBlessed: Boolean = false,
        private var isImmortal: Boolean) : Fightable {
    ...
}

When you add the Fightable interface to Player, IntelliJ indicates that functions and properties are missing. Warning you that properties and functions ...

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Publisher Resources

ISBN: 9780135165188