Creating a Java Application to Store 10 Age Values as Integers

Many developers are often tasked with creating Java applications to store and manipulate data. One common requirement is to store a set of age values as integers. This article will guide you through creating a basic Java application to store up to 10 age values. We will cover both basic and interactive methods for storing these values.

Understanding the Basics of Storing Age Values

Let's start with a simple version of this application.

public class Main {
    public static void main(String[] args) {
        int age1  1;
        int age2  2;
        int age3  3;
        int age4  4;
        int age5  5;
        int age6  6;
        int age7  7;
        int age8  8;
        int age9  9;
        int age10  10;
        // Output the stored age values
        ("These are the stored ages: "   age1   " "   age2   " "   age3   " "   age4   " "   age5   " "   age6   " "   age7   " "   age8   " "   age9   " "   age10);
    }
}

In this example, we initialize 10 integers with specific age values. The program then outputs these values. While this is a straightforward method, it lacks the flexibility to change age values dynamically.

Interactive Input Method for Age Values

If you want users to input the age values, a more dynamic approach is necessary. Let's explore an interactive version that uses user input.

import ;
public class Main {
    public static void main(String[] args) {
        Scanner myObj  new Scanner();
        int age1  ();
        int age2  ();
        int age3  ();
        int age4  ();
        int age5  ();
        int age6  ();
        int age7  ();
        int age8  ();
        int age9  ();
        int age10  ();
        // Output the stored age values
        ("These are the stored ages: "   age1   " "   age2   " "   age3   " "   age4   " "   age5   " "   age6   " "   age7   " "   age8   " "   age9   " "   age10);
    }
}

In this version, the application prompts the user to enter 10 age values. The `Scanner` class is used to read these values from the standard input. Below is a sample interaction with the user:

Input:
Please enter 10 age values:
20
21
64
12
1
13
15
20
12
209
Output:
These are the stored ages: 20 21 64 12 1 13 15 20 12 209

Enhancing the Application with Custom Input Validation

While the above examples are functional, they may prompt users to enter invalid age values. It's best to add input validation to ensure that only valid age values are entered.

import ;
public class Main {
    public static void main(String[] args) {
        Scanner myObj  new Scanner();
        int age1, age2, age3, age4, age5, age6, age7, age8, age9, age10;
        // Prompt user for age values with input validation
        ("Please enter 10 age values:");
        age1  enterAgeValue(());
        age2  enterAgeValue(());
        age3  enterAgeValue(());
        age4  enterAgeValue(());
        age5  enterAgeValue(());
        age6  enterAgeValue(());
        // Continue for remaining ages (9 and 10)
        age7  enterAgeValue(());
        age8  enterAgeValue(());
        age9  enterAgeValue(());
        age10  enterAgeValue(());
        // Output the stored age values
        ("These are the stored ages: "   age1   " "   age2   " "   age3   " "   age4   " "   age5   " "   age6   " "   age7   " "   age8   " "   age9   " "   age10);
    }
    // Method to validate age values
    public static int enterAgeValue(String input) {
        int age  0;
        while (true) {
            try {
                age  (input);
                if (age  0) {
                    ("Invalid age. Age cannot be negative. Please enter a valid age.");
                    age  (());
                } else {
                    break;
                }
            } catch (NumberFormatException e) {
                ("Invalid input. Please enter a valid age.");
                age  (());
            }
        }
        return age;
    }
}

This version includes a validation function `enterAgeValue()` to ensure that entered age values are positive integers. The `try-catch` block and a while loop handle invalid inputs, ensuring that only valid ages are stored.

Conclusion

Creating a Java application to store age values as integers is a straightforward task, but it can be made more interactive and robust by incorporating user input and validation. Whether you need a simple application or a more complex one, understanding these basic techniques will help you meet the requirements efficiently.

Remember to explore more advanced Java features and libraries to enhance your applications! Happy coding!