AlgoDaily - Creating Class Diagrams

Home > LOW level design > LOW level design > Creating Class Diagrams

Problem Statement

Defining the problem statement is the first step in low level design. It involves identifying the primary objective of the payment app and outlining the key functionalities.

In the case of our payment app, the problem statement can be defined as follows:

Design a payment app that allows users to make secure and convenient online transactions.

To further clarify the requirements and scope of the payment app, we can identify the following key requirements:

User authentication: Users should be able to create an account and log in securely.
Payment methods: The app should support multiple payment methods, such as credit cards, debit cards, and digital wallets.
Transaction history: Users should be able to view their transaction history.

By defining a clear problem statement and identifying the requirements, we can proceed to the next steps in the low level design process.

xxxxxxxxxx
}
 
package com.example.paymentapp;
​
public class PaymentApp {
​
    public static void main(String[] args) {
        // Define the problem statement
        String problemStatement = "Design a payment app that allows users to make secure and convenient online transactions."
​
        // Identify the requirements
        Requirement[] requirements = new Requirement[]{
            new Requirement("User authentication: Users should be able to create an account and log in securely."),
            new Requirement("Payment methods: The app should support multiple payment methods, such as credit cards, debit cards, and digital wallets."),
            new Requirement("Transaction history: Users should be able to view their transaction history.")
        };
​
        // Print the problem statement
        System.out.println("Problem Statement:");
        System.out.println(problemStatement);
​
        // Print the requirements
        System.out.println("Requirements:");
        for (Requirement requirement : requirements) {
            System.out.println(requirement.getDescription());
        }
    }
​
    public static class Requirement {
        private String description;
​

Problem Statement

Programming Categories

Popular Lessons