throws Exception in a method with Kotlin

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throws Exception in a method with Kotlin

  1. throws Exception in a method with Kotlin

    In Kotlin, there's no checked exceptions, no exceptions have to be declared and you aren't forced to catch any exception, though, of course, you can. Even when deriving from a Java class, you don't have to declare exceptions that a method throws.

  2. throws Exception in a method with Kotlin

    In Kotlin, there's no checked exceptions, no exceptions have to be declared and you aren't forced to catch any exception, though, of course, you can. Even when deriving from a Java class, you don't have to declare exceptions that a method throws.

Solution 1

In Kotlin, there’s no checked exceptions, no exceptions have to be declared and you aren’t forced to catch any exception, though, of course, you can. Even when deriving from a Java class, you don’t have to declare exceptions that a method throws.

@Throws(SomeException::class) is just intended for Java interoperability, which allows one to write a function with throws in Java signature, so that in Java it will be possible (and necessary) to handle the exception.

Instead, public API exceptions should be documented in KDoc with @throws tag.

Original Author hotkey Of This Content

Solution 2

In Java your functions are something like this

void foo() throws IOException{
    throw new IOException();
}

But in Kotlin you can add annotation like below to force other Java classes to catch it. However, as other answers have pointed out, it doesn’t have any meaning among Kotlin classes.

@Throws(IOException::class)
fun foo() {
    throw IOException()
}

Source kotlinlang.org

Original Author Radesh Of This Content

Conclusion

So This is all About This Tutorial. Hope This Tutorial Helped You. Thank You.

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Siddharth

I am an Information Technology Engineer. I have Completed my MCA And I have 4 Year Plus Experience, I am a web developer with knowledge of multiple back-end platforms Like PHP, Node.js, Python and frontend JavaScript frameworks Like Angular, React, and Vue.

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