Interface EventListener<E extends Event>

Type Parameters:

E - the type of event to listen for | 要监听的事件类型

All Known Implementing Classes:

EventCaptor

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface EventListener<E extends Event>

Event Listener Interface 事件监听器接口

Functional interface for handling events.

用于处理事件的函数式接口。

Features | 主要功能:

• Lambda support - Lambda支持
• Type-safe event handling - 类型安全的事件处理
• Functional interface - 函数式接口

Usage Examples | 使用示例:

// Lambda listener
OpenEvent.getDefault().on(UserRegisteredEvent.class, event -> {
    System.out.println("User registered: " + event.getUserId());
});

// Method reference
OpenEvent.getDefault().on(UserRegisteredEvent.class, this::handleUserRegistered);

// Anonymous class
OpenEvent.getDefault().on(UserRegisteredEvent.class, new EventListener<>() {
    @Override
    public void onEvent(UserRegisteredEvent event) {
        // Handle event
    }
});

Security | 安全性:

• Thread-safe: Yes (stateless) - 线程安全: 是（无状态）

Since:

JDK 25, opencode-base-event V1.0.0

Author:

Leon Soo www.LeonSoo.com

See Also:

• OpenCode.cloud

Method Summary

Modifier and Type	Method	Description
void	onEvent(E event)	Handle an event 处理事件

Method Details

onEvent

void onEvent(E event)

Handle an event 处理事件

Parameters:

event - the event to handle | 要处理的事件