Generics-Object-oriented 7

Course Outline

Understanding Generics

Using generics in construction methods

Set multiple generics

Wildcard characters

Generic interface

Generic methods

Generic array

1. Generics are functional generics added in JDK1.5 (Generic)

2. Generics can resolve data type security issues (type inconsistency such as defining private Object float px= (float) p.getx ()),

Its principle is that at the time of class declaration, an identifier is used to represent the type of a property in a class and the return value and parameter type of a method.

3. Format:

Access Permissions class class name < Generics, generics >

{Property

Method

4. Creation of objects

Class name < concrete type > object Name =new class name < concrete type > ();

Class point<t>{//Ambiguous type

}

In main

Point<string> p=new point<string> ();//What you need to preach

Generics-Object-oriented 7