How can I return multiple values from a Java method?

Returning Multiple Values from Java Methods

Returning multiple values from a Java method presents a challenge if traditional methods are used. Attempting to return two values as demonstrated in the code below will result in a compilation error.

<code class="java">public static int something() {
    int number1 = 1;
    int number2 = 2;
    
    return number1, number2; // Compilation error: cannot return multiple values
}</code>

Overcoming the Limitation

To resolve this limitation, consider using a custom class to represent the result, rather than returning an array or using a generic Pair class. This approach not only ensures type safety, but also enhances code readability.

Example Implementation

<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>

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