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Java generic, java generic
I. generic definition1. What is java generics?Generics are new features of Java SE 1.5. The nature of generics is parameterized, that is, the Data Type operated is specified as a parameter.This type of parameter can be
Java Study Notes 10 -- generic summary, java Study Notes 10 -- generic
Java learning notes series:
Java study notes 9-internal class Summary
Java study note 8-interface Summary
Java study notes 7 -- abstract classes and abstract methods
Java study
Java generic explanation (General generic, wildcard, generic interface, Generic Array, generic method, generic nesting)
JDK 5.0 has long been expected, but it was changed to version when it was released. This shows that Java has changed
Java introduced generics in JDK 5, which is a lot easier to use, and here's a very common generic usage:
list list = new arraylist ();
Generic methods use
Not only can it be used in collections, but it is often used when defining classes,
1. Defining generic methods(1) If you define a generic (class, interface), then Java specifies that you cannot use generic type parameters in all static methods, static blocks, and so on. For example:public class at> {public static void func (T t) {
18-1, generic-Overview
1. Generic is a new technology in JDK1.5. The emergence of new technologies aims to solve problems.
2. Generics can be used to identify the types of elements stored in a collection.
ArrayList
Al = new ArrayList
();
No matter when, believe in yourself.Related articles:1, "tamping java one of the basic--generic detailed (1)"2, "tamping java one of the basic--generic detailed (2)"first, the introduction1. What is a generic type?First tell everyone that ArrayList
As described earlier, you can use type parameters when defining classes and interfaces, which can be used as normal types in the method definitions and Field definitions of the class and in the method definitions of the interfaces. In other cases,
Java generics (generics) is a new feature introduced in JDK 5 that allows the use of type parameters (types parameter) when defining classes and interfaces. The declared type parameter is replaced with a specific type when used. The most important
Learning GoalsMastering the use of generic interfacesMastering the definition and use of generic methodsMastering the use of generic arraysMastering nested settings for genericsall of the previous operations are directly using generic operations in
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