Multiple catch blocks in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to catch an exception of type ArithmeticException.

Kotlin

try {
    val result = 10 / 0
} catch (e: [1]) {
    println("Cannot divide by zero")
}

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AArithmeticException

BIllegalArgumentException

CNullPointerException

DIOException

Attempts:

3 left

💡 Hint

Common Mistakes

Using IOException instead of ArithmeticException

Catching NullPointerException which is unrelated here

The code catches an ArithmeticException which occurs when dividing by zero.

2fill in blank

medium

Complete the code to catch a NullPointerException.

Kotlin

val text: String? = null
try {
    println(text!!.length)
} catch (e: [1]) {
    println("Null value encountered")
}

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AIndexOutOfBoundsException

BArithmeticException

CIOException

DNullPointerException

Attempts:

3 left

💡 Hint

Common Mistakes

Using ArithmeticException which is unrelated

Catching IOException which does not occur here

The code throws a NullPointerException when trying to access length of a null string.

3fill in blank

hard

Fix the error in the catch block to handle IndexOutOfBoundsException.

Kotlin

val list = listOf(1, 2, 3)
try {
    println(list[5])
} catch (e: [1]) {
    println("Index is out of range")
}

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AIndexOutOfBoundsException

BArithmeticException

CNullPointerException

DIllegalArgumentException

Attempts:

3 left

💡 Hint

Common Mistakes

Using NullPointerException which is unrelated

Catching ArithmeticException which does not occur here

Accessing an invalid index throws IndexOutOfBoundsException.

4fill in blank

hard

Fill both blanks to catch ArithmeticException and NullPointerException separately.

Kotlin

try {
    val number = 10 / 0
    val text: String? = null
    println(text!!.length)
} catch (e: [1]) {
    println("Arithmetic error occurred")
} catch (e: [2]) {
    println("Null pointer error occurred")
}

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AArithmeticException

BIOException

CNullPointerException

DIndexOutOfBoundsException

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the exception types

Using unrelated exceptions like IOException

The first catch handles ArithmeticException and the second handles NullPointerException.

5fill in blank

hard

Fill all three blanks to catch ArithmeticException, NullPointerException, and IndexOutOfBoundsException in separate catch blocks.

Kotlin

try {
    val result = 10 / 0
    val text: String? = null
    println(text!!.length)
    val list = listOf(1, 2, 3)
    println(list[5])
} catch (e: [1]) {
    println("Arithmetic error")
} catch (e: [2]) {
    println("Null pointer error")
} catch (e: [3]) {
    println("Index out of bounds error")
}

Drag options to blanks, or click blank then click option'

AArithmeticException

BNullPointerException

CIndexOutOfBoundsException

DIOException

Attempts:

3 left

💡 Hint

Common Mistakes

Using IOException which is unrelated

Mixing up the order of exceptions

Each catch block handles a specific exception: ArithmeticException, NullPointerException, and IndexOutOfBoundsException.