注釈：追記すべき情報がある場合には、その都度このページを更新する予定です。 概要 2026年10月21日（日本時間）に Oracle Java に関するセキュリティ更新プログラムが公表されています。

In April 2021, we announced the Microsoft Build of OpenJDK. We were starting with a preview of our Java 11 builds for Windows, Linux, and macOS. Today, if you’re planning a Java upgrade on Azure, you ...

Using a System76 Thelio Major workstation powered by the AMD Ryzen Threadripper 9980X and running Fedora Workstation 44, I benchmarked all the OpenJDK versions going back to the Java 8 days. Though ...

Everything you need to consider when choosing between Fenix 8 and Fenix 7. It's now been well over a year since Garmin unveiled Fenix 8, giving us plenty of time to test all its key differences from ...

JDK 8 的 ConcurrentHashMap 底层是数组、链表、红黑树，线程安全主要靠 CAS、volatile 和 synchronized。 put 时如果 table 没初始化，先 CAS 初始化；桶为空时 CAS 插入；桶不为空时锁住桶头节点，只影响当前桶。 get 通常不加锁，依赖 volatile 可见性和节点结构保证读取安全。

3:03:26 WARN]: [me.caseload.knockbacksync.shaded.com.github.retrooper.packetevents.PacketEventsAPI] PacketEvents caught an unhandled exception while calling your ...

ConcurrentHashMap 是 Java 并发包 (java.util.concurrent) 中提供的一个线程安全的高性能哈希表实现。它是 HashMap 的并发版本，专为多线程环境设计，无需外部同步即可安全地在多个线程中同时读写。

Samsung's Galaxy Watch 8 is thinner, brighter, and has a bigger battery than its predecessor, but is it worth an extra Benjamin? I've tested both, and I'm here to help you decide. I’m PCMag’s senior ...

Editors’ Note: The Galaxy Watch 8 has added enough flashy new features to set it apart from its predecessors, making it one of the most robust Wear OS smartwatches you can get. It debuts a ...

你是否经历过线上系统因HashMap并发操作导致的CPU 100%故障？是否还在为线程安全集合的性能损耗发愁？本文将系统解析Java 8并发集合框架的核心组件ConcurrentHashMap，通过原理剖析、场景对比和 ...

Life’s Essential 8™ are the key measures for improving and maintaining cardiovascular health, as defined by the American Heart Association. Better cardiovascular health helps lower the risk for heart ...