Understanding Problem Statements

To effectively design and implement a payment app, it is crucial to thoroughly understand the problem statements and identify key requirements. Analyzing problem statements helps us gain clarity on what the app needs to do and what features it should have.

A problem statement defines the problem that the app aims to solve. It describes the desired outcome and provides a clear understanding of the problem domain. For example:

1Implement a payment app that allows users to make payments and generate invoices.

Once we have the problem statement, we can then identify the key requirements of the app. These requirements define the functionalities and features that the app should have. Here are some example requirements for the payment app:

1. User should be able to create an account
2. User should be able to add funds to their account
3. User should be able to make payments to merchants
4. User should be able to generate invoices for payments made
5. User should be able to view transaction history

By analyzing the problem statements and identifying the key requirements, we can ensure that we have a clear understanding of what needs to be implemented. This step is crucial in the low level design process as it lays the foundation for the subsequent steps such as creating a class diagram, defining entities and relationships, and deciding on the appropriate design patterns.

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class Main {

  public static void main(String[] args) {

    // Replace this with your Java logic

    String problemStatement = "Implement a payment app that allows users to make payments and generate invoices.";

​

    String[] requirements = {

      "1. User should be able to create an account",

      "2. User should be able to add funds to their account",

      "3. User should be able to make payments to merchants",

      "4. User should be able to generate invoices for payments made",

      "5. User should be able to view transaction history"

    };

​

    // Print problem statement

    System.out.println("Problem Statement:");

    System.out.println(problemStatement);

​

    // Print requirements

    System.out.println("Requirements:");

    for (String requirement : requirements) {

      System.out.println(requirement);

    }

  }

}