Implementing the Payment App in Java

Now that we have a clear understanding of the low-level design elements such as problem statements, requirements, class diagram, entities, relationships, and database schema, let's dive into the implementation of the payment app using the Java programming language.

1class Main {
2  public static void main(String[] args) {
3    // Payment app logic here
4  }
5}

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class Main {

  public static void main(String[] args) {

    // Payment app logic here

  }