Finally block behavior in Kotlin - Mini Project: Build & Apply

Finally Block Behavior

📖 Scenario: Imagine you are writing a program that processes a simple task but you want to make sure some cleanup code always runs, no matter what happens during the task.

🎯 Goal: You will create a Kotlin program that uses a try, catch, and finally block to show how the finally block always runs.

📋 What You'll Learn

Create a variable called result and set it to an empty string

Add a try block that sets result to "Try block executed"

Add a catch block that sets result to "Catch block executed"

Add a finally block that appends " and Finally block executed" to result

Print the result variable

💡 Why This Matters

🌍 Real World

In real programs, <code>finally</code> blocks are used to close files, release resources, or clean up tasks that must happen no matter what.

💼 Career

Understanding <code>try</code>, <code>catch</code>, and <code>finally</code> is important for writing safe and reliable Kotlin applications, a key skill for many software development jobs.

1

Create the result variable

Create a variable called result and set it to an empty string "".

Kotlin

var result = ""
// Your code here

Need a hint?

Use var result = "" to create an empty string variable.

2

Add the try block

Add a try block that sets result to "Try block executed".

Kotlin

var result = ""
try {
    // Your code here
}

Need a hint?

Write try { result = "Try block executed" } to set the variable inside the try block.

3

Add the catch and finally blocks

Add a catch block that sets result to "Catch block executed" and a finally block that appends " and Finally block executed" to result.

Kotlin

var result = ""
try {
    result = "Try block executed"
} catch (e: Exception) {
    // Your code here
} finally {
    // Your code here
}

Need a hint?

Use catch (e: Exception) { result = "Catch block executed" } and finally { result += " and Finally block executed" }.

4

Print the result

Write println(result) to display the final value of result.

Kotlin

var result = ""
try {
    result = "Try block executed"
} catch (e: Exception) {
    result = "Catch block executed"
} finally {
    result += " and Finally block executed"
}
// Your code here

Need a hint?

Use println(result) to show the output.