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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

Exceptions and Interoperability

The hero has taught the Jhava monster language, and the monster will now extend its hand in friendship … or maybe not. Add a method, extendHandInFriendship, to Jhava.java.

Listing 20.34  Throwing an exception in Java (Jhava.java)

public class Jhava {
    ...
    public void offerFood() {
        Hero.handOverFood("pizza");
    }

    public void extendHandInFriendship() throws Exception {
        throw new Exception();
    }
}

Invoke this method in Hero.kt:

Listing 20.35  Invoking a method that throws an exception (Hero.kt)

@file:JvmName("Hero")

fun main(args: Array<String>) {
    ...
    adversary.offerFood()

    adversary.extendHandInFriendship()
}

fun makeProclamation() = "Greetings, beast!"
...

Run this code, and you will see that ...

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Publisher Resources

ISBN: 9780135165188