This Java source code implements a basic calculator with a graphical user interface (GUI) using AWT and Swing. The calculator features a clear layout, displaying a large text field at the top for entering and displaying numbers. The numeric keypad, along with buttons for addition, subtraction, multiplication, division, and other functions, is arranged neatly below the text field. Users can input numbers and perform arithmetic operations by clicking the corresponding buttons. The code utilizes event handling to respond to user interactions, ensuring accurate calculations and displaying results dynamically.

The program is structured in a way that makes it suitable for novice programmers to understand and learn about GUI development in Java. It serves as an excellent starting point for those looking to explore basic GUI applications and understand the principles of event-driven programming.