How is generalization used to simplify the models of a system with many similar objects?

How is generalization used to simplify the models of a system with many similar objects?
Answer: Generalization is an everyday technique that we use to manage complexity. It is often useful to examine the classes in a system to see if there is scope for generalization. This means that common information will be maintained in one place only. This is good design practice as it means that, if changes are proposed, then you do not have to look at all classes in the system to see if they are affected by the change. In object-oriented languages, such as Java, generalization is implemented using the class inheritance mechanisms built into the language. In a generalization, the attributes and operations associated with higher-level classes are also associated with the lower-level classes.