Designing Methods and Functions

In low level design, designing methods and functions is an essential aspect of creating a well-structured and efficient system. Methods and functions in low level design define the behavior and actions that can be performed on objects.

When designing methods and functions, there are a few key considerations:

1. Responsibilities: Each method or function should have a clear responsibility and perform a specific action. It should follow the principle of single responsibility and should not be overloaded with unrelated tasks.

2. Input and Output: Methods and functions often take input parameters and return output values. It is important to design them in a way that clearly defines the expected inputs and outputs. Parameters should be appropriately named to convey their purpose, and return types should be chosen based on the expected result.

3. Modularity: Methods and functions should be modular and reusable. They should be designed in such a way that they can be easily understood, tested, and modified if needed. Modularity helps in maintaining a clean and maintainable codebase.

Here's an example of designing a method in Java:

1public class MathUtils {
2
3  public static int multiply(int a, int b) {
4    return a * b;
5  }
6
7}

In this example, we have a multiply method that takes two integers as input and returns their product. This method has a clear responsibility of performing the multiplication operation.

By following these principles and guidelines, you can design methods and functions in low level design that are efficient, readable, and maintainable.

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class Main {

  public static void main(String[] args) {

    // replace with your Java logic here

    int result = multiply(5, 3);

    System.out.println(result);

  }

​

  public static int multiply(int a, int b) {

    return a * b;

  }

}