Class diagram

A class diagram is like a map that helps us understand how different parts of a computer program are connected to each other. Just like how we use maps to understand how different cities are connected by roads and highways, we use class diagrams to understand how different components of a program are connected by code.

In a class diagram, each component of the program is represented by a "box", called a class. These classes can represent things like buttons, images, text, and other parts of a program. Inside each box, we write the name of the class and the variables and functions that it contains.

But how do we know how these classes are connected to each other? Well, we use lines! These lines connect the different classes together to show how they work together. For example, a line might connect a button class to a function class to show that when you press the button, it runs the function.

So, just like how a map helps us understand how to get from one place to another, a class diagram helps us understand how different parts of a computer program work together.