How to Return Multiple Values from Java Methods?

Returning Multiple Values from Java Methods with Custom Result Classes

Returning multiple values from a Java method introduces immediate obstacles. In your attempt to return two integers, the syntax error alludes to the lack of a valid return statement.

Instead of resorting to arrays or generic Pair classes, consider creating a custom class to encapsulate the results. This approach offers several advantages:

• Type Safety: A custom class guarantees the correct data types for the returned values.
• Clarity: A class with a meaningful name conveys the nature of the result, aiding understanding.

Here's an example that demonstrates this technique:

<code class="java">final class MyResult {
    private final int first;
    private final int second;

    public MyResult(int first, int second) {
        this.first = first;
        this.second = second;
    }

    public int getFirst() {
        return first;
    }

    public int getSecond() {
        return second;
    }
}

public static MyResult something() {
    int number1 = 1;
    int number2 = 2;

    return new MyResult(number1, number2);
}

public static void main(String[] args) {
    MyResult result = something();
    System.out.println(result.getFirst() + result.getSecond());
}</code>

By creating a custom result class, you not only bypass the syntax error but also enhance the clarity and robustness of your code.

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