Скачать или смотреть Creating a Java Program to Compute the Average of User-Provided Integers

Learn how to create a Java program that takes 10 integer inputs from the user, handles invalid inputs, writes them to a file, and computes the average.
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How to Create a Java Program to Compute the Average of User-Provided Integers

Are you tackling a Java programming challenge that involves taking user input, handling potential errors, working with files, and calculating averages? If so, you're in the right place! In this guide, we will walk you through a solution that meets these requirements step-by-step.

Overview of the Problem

The task is to create a Java program that:

Prompts the user to enter 10 integer values.

Validates the input and ensures that only integers are accepted.

Saves these integers to a file called data.txt.

Reads back the integers from the file, calculates their average, and displays it.

If you're feeling stuck, especially with handling non-integer inputs or file operations, this guide will clarify everything for you.

Step-by-Step Solution

1. Setting Up the Program Structure

We'll start by defining a class and setting up essential constants to manage our integers and file names effectively:

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2. Gathering User Input

Next, we need to collect ten integers from the user. It's crucial to ensure robust input handling to catch any invalid entries:

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2.1 Implementing Input Validation

The getIntegerInput method is where we ensure that the user inputs are valid integers:

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3. Writing to a File

Once we have valid input, the program writes these integers to data.txt:

[[See Video to Reveal this Text or Code Snippet]]

4. Reading from the File and Calculating the Average

Now, we will read the integers back from the file, compute their average, and display the result:

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Complete Code Example

Here’s the complete program for your reference:

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Example Output

Below is an example of how the program runs when you input a mix of valid and invalid integers:

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Conclusion

Congratulations! You have successfully created a Java program that not only accepts user input but also manages errors, stores data in a file, and computes the average. Feel free to expand upon this program, perhaps by adding more functionality or improving the user experience. Keep coding, and happy programming!