有没有办法创建具有设置类型参数和返回值的方法？

function addNumbers(num1, num2) {
  return num1 + num2;
}

console.log(addNumbers(5, 10)); // 输出 15

public class Calculator {
  public static int addNumbers(int num1, int num2) {
    return num1 + num2;
  }

  public static void main(String[] args) {
    int result = addNumbers(5, 10);
    System.out.println(result); // 输出 15
  }
}

import org.junit.Test;
import static org.junit.Assert.assertEquals;

public class CalculatorTest {
  @Test
  public void testAddNumbers() {
    int result = Calculator.addNumbers(5, 10);
    assertEquals(15, result);
  }
}

CREATE PROCEDURE AddNumbers
  @num1 INT,
  @num2 INT
AS
BEGIN
  SET NOCOUNT ON;
  SELECT @num1 + @num2 AS Result;
END