What is try-catch?

try-catch is a programming construct used to handle exceptions or errors that may occur during the execution of a program. It allows developers to write code that can gracefully manage unexpected situations without crashing the application.

Here's how it works:

• try block: You place the code that might throw an exception inside the try block. If an exception occurs, the control is transferred to the corresponding catch block.

• catch block: This block contains the code that handles the exception. You can specify the type of exception you want to catch, allowing for different handling strategies based on the type of error.

Here’s a simple example in Java:

import java.util.Scanner;

public class Example {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        
        try {
            System.out.print("Enter a number: ");
            int userInput = scanner.nextInt();
            System.out.println("You entered: " + userInput);
        } catch (InputMismatchException e) {
            System.out.println("Invalid input. Please enter a valid number.");
        }
    }
}

In this example, if the user enters something that is not a number, the InputMismatchException is caught, and an error message is displayed instead of the program crashing.