Q. Define a Class diagram with example?

Class diagram: A class diagram in the UML (Unified Modelling Language) is a type of static structure diagram that describes the structure of a system by showing their attributes, the system's classes and the relationships between the classes. The UML specifies two kinds of scope for members that are instance and classifier. In the situation of instance members the scope is a specific instance. For attributes it signifies that its value can vary between instances. For processes it means that its invocation affects the instance state in other words affects the instance attributes. Or else in the classifier member the scope is the class. For attributes it denotes that its value is equal for all instances. For processes it denotes that its invocation don't affect the instance state. Classifier members are usually recognized as static in many programming languages.