What are the scenarios where Java generic methods are used?

  1. In collection classes, it is common to use generic methods to enhance type safety. For instance, in a List, generic methods can be used to restrict the addition of elements to only a specific type.
  2. In the utility class, used to handle objects of different types. For example, a generic method can be used to write a method that converts an array of any type into a List.
  3. In the field of algorithms, generic methods are used to handle various types of data. For example, a generic method can be written for finding the maximum value that can be applied to different types of data, such as integers, floating-point numbers, and so on.
  4. In interfaces, generic methods are used to define universal functions. For example, a generic comparison method can be defined using a generic method, allowing different implementation classes to use different comparison rules.
  5. Within a framework, used for implementing generic data structures and algorithms. For example, many classes and methods in the collection framework of Java use generic methods to be able to handle elements of different types.
  6. In database operations, it is used to achieve generic CRUD operations. For example, generic methods can be used to implement common operations such as insert, update, delete, and query, to avoid writing repetitive code.
  7. In exception handling, it is used to implement generic exception handling logic. For example, a generic exception handling method can be written using generic methods to capture and handle different types of exceptions.
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