Chapter 18. Introducing Generics

After completing this chapter, you will be able to:

  • Define a type-safe class by using generics.

  • Create instances of a generic class based on types specified as type parameters.

  • Implement a generic interface.

  • Define a generic method that implements an algorithm independent of the type of data on which it operates.

In Chapter 8 you learned how to use the object type to refer to an instance of any class. You can use the object type to store a value of any type, and you can define parameters by using the object type when you need to pass values of any type into a method. A method can also return values of any type by specifying object as the return type. Although this practice is very flexible, it puts the onus on the programmer ...

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