10 recommended articles about erasure

Introduction Generics are a very important knowledge point in Java. Generics are widely used in the Java collection class framework. In this article, we will look at the design of Java generics from scratch, which will involve wildcard processing and annoying type erasure. Generic basics Generic class We first define a simple Box class: public class Box { Private String object; Public void set(String object) { this.object = object; } public String get()

1. Summary of articles about generics

##Introduction: Generics are a very important knowledge point in Java. Generics are widely used in the Java collection class framework. In this article, we will look at the design of Java generics from scratch, which will involve wildcard processing and annoying type erasure. Generic basics Generic classes We first define a simple Box class: public class Box {    private&n...

2. What is a collection class in Java? Explanation of collection class structure with graphic examples

##Introduction: Collection classes in Java are the most frequently used in Java programming , the most convenient class. As a container class, the collection class can store any type of data. Of course, it can also be combined with generics to store specified types (but generics are only valid at compile time and will be erased at runtime). What is stored in the collection class is only a reference to the object, not the object itself. The capacity of the collection class can be dynamically expanded during runtime, and it also provides many convenient methods, such as finding the union and intersection of sets.

3.

Java generics explanation

# #Introduction: Generics are a very important knowledge point in Java. Generics are widely used in the Java collection class framework. In this article, we will look at the design of Java generics from scratch, which will involve wildcard processing and annoying type erasure.

4.

Detailed explanation of Java generics

##Introduction: Generics are a very important knowledge point in Java. Generics are widely used in the Java collection class framework. In this article, we will look at the design of Java generics from scratch, which will involve wildcard processing and annoying type erasure.

5. Summary of Java Generics (1) - Detailed explanation of basic usage and type erasure

Introduction: This article mainly introduces the use of Java generics and issues related to type erasure. Has very good reference value. Let’s take a look with the editor below

6. Detailed explanation of the sample code (picture) of HTML5 to achieve the erasing effect of the eraser

Introduction: This effect has just been used in recent projects, which is a bit like a scratch card. On a mobile device, a certain picture can be Scratching away reveals another image. The rendering is as follows:

7. Java Generics (Generics) Overview Sample Code Detailed Explanation

Introduction: Java generics are a new feature introduced in JDK 5, which allows the use of type parameters when defining classes, interfaces and methods. General classes and methods can only use specific types. If you want to write code that can be applied to multiple types, this rigid restriction will be very restrictive to the code. Polymorphism is a generalization mechanism, but the constraints on the code are still too strong. There are many reasons for the emergence of generics, but one of the most compelling reasons is to create container classes. As a review article of generics, this article comprehensively explains the motivation, basic concepts, implementation mechanism, type erasure, use of wildcards, covariance and contravariance of generics.

8. Detailed explanation of generics in Java

##Introduction: This article mainly introduces the detailed explanation of generics in Java. This article explains generic classes or interfaces, subclasses derived from generic classes, pseudo-generics, type wildcards, the upper limit of wildcards, and the lower limit of wildcards. For information on erasure and conversion, friends who need it can refer to

9. Java Generics - Type Erasure

#Introduction: There are many problems in the use of Java generics, such as List.class does not exist, List cannot be assigned to List

10.

javascript - How to handle json with BOM header.

Introduction: The files are all in utf8+ no BOM header format, but the returned json has a red dot to explain how to erase the BOM header if there is a BOM header

[Related Q&A recommendations]:

javascript - How to deal with json with BOM header.

android - The String returned by the Matcher.replaceAll method will erase the set Span

In the chapter Generics in Java Core Technology Volume 1 The section "Type variables are invalid in the static context of a generic class" cannot be understood

Questions about knowledge points about erasing a simple piece of code in java generics

html5 - About the implementation of real-time transmission of canvas images using PHP

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