Can you explain try-catch-finally?

Can you explain try-catch-finally?

Sure! The try-catch-finally construct is used in programming to handle exceptions. The 'try' block contains code that might throw an error, the 'catch' block handles the error if it occurs, and the 'finally' block executes code after the try and catch blocks, regardless of whether an error occurred.

Can you give me an example of how it works?

Of course! Here's a simple example in JavaScript:

try {
    // Code that may throw an error
    let result = riskyFunction();
} catch (error) {
    // Code to handle the error
    console.error('Error occurred:', error);
} finally {
    // Code that runs regardless of the outcome
    console.log('Execution completed.');
}

What happens if there's no catch block?

If there's no catch block and an error occurs in the try block, the error will propagate up to the calling function or terminate the program, depending on the environment.

Is the finally block optional?

Yes, the finally block is optional. You can use try and catch without finally, but if you include finally, it will always execute.