How can I implement custom error messages in different programming languages?

How can I implement custom error messages in different programming languages?

You can implement custom error messages by using exception handling features in languages like Python, Java, and JavaScript.

Can you give me an example in Python?

Sure! In Python, you can define a custom exception like this:

class CustomError(Exception):
    def __init__(self, message):
        super().__init__(message)

Then, you can raise it with a specific message.

What about in Java?

In Java, you can create a custom exception by extending the Exception class:

public class CustomError extends Exception {
    public CustomError(String message) {
        super(message);
    }
}

You can then throw it using throw new CustomError("Your message here");.

And in JavaScript?

In JavaScript, you can create a custom error by extending the Error class:

class CustomError extends Error {
    constructor(message) {
        super(message);
        this.name = 'CustomError';
    }
}

You can throw it using throw new CustomError('Your message here');.