Home > Java > javaTutorial > What does arrow mean in java

What does arrow mean in java

下次还敢
Release: 2024-04-26 23:06:15
Original
834 people have browsed it

The arrow (->) in Java represents an anonymous inner class, an inner class that does not need to declare a name, to simplify the code: Syntax: new OuterClass() { // Code for anonymous inner classes} Usage : Implement interface Extend abstract class Create event handler

What does arrow mean in java

Arrow (->) in Java

The arrow (->) represents an anonymous inner class in Java.

Anonymous inner class is an inner class that does not need to declare a name. It is usually used to simplify code and avoid creating separate class files.

Syntax:

<code class="java">new OuterClass() {
    // 匿名内部类的代码
};</code>
Copy after login

Usage:

Anonymous inner classes are usually used when one-time classes need to be created and used quickly Scenarios, for example:

  • Implementing the interface: You can implement the interface anonymously, just override all methods in the interface.
  • Extending abstract classes: You can extend abstract classes anonymously, just implement abstract methods.
  • Create event handlers: Event handlers can be easily created using anonymous inner classes, just override the required event methods.

For example:

The following is an example of using an anonymous inner class to implement the Runnable interface:

<code class="java">Thread thread = new Thread(new Runnable() {
    @Override
    public void run() {
        // 线程要执行的任务
    }
});</code>
Copy after login

Anonymous inner A class can access non-private member variables and methods in its outer class. You must be careful when modifying non-final variables in anonymous inner classes, as this may cause thread safety issues.

The above is the detailed content of What does arrow mean in java. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template