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在Java开发的世界里，有一个几乎所有程序员都深恶痛绝却又屡屡中招的“幽灵错误”——空指针异常（NullPointerException，简称NPE）。它像一颗隐藏在代码深处的定时炸弹，可能在你最不经意的时刻突然爆发：当你调用一个未初始化对象的方法时 ...

引言：金融级并发的“性能怪兽”——Disruptor为何能颠覆传统队列？ 在金融交易、高频数据处理、实时风控等对吞吐量（Throughput）和延迟（Latency）极度敏感的场景中，传统的Java并发队列（如ArrayBlockingQueue、LinkedBlockingQueue）往往成为性能瓶颈。例如，某券商的旧交易系统采用LinkedBlockingQueue处理订单，在峰值时段仅能支撑 ...

Bitcoin breaks October streak with first monthly loss since 2018 Bitcoin on Friday was on track for a monthly loss in October for the first time since 2018, snapping a seven-year streak of gains that ...

The MyBatis SQL mapper framework makes it easier to use a relational database with object-oriented applications. MyBatis couples objects with stored procedures or SQL statements using an XML ...

A man who threatened to burn a Quran in Dearborn last week during an anti-Islam protest is now filing a federal hate crime lawsuit against the city. In a statement released Tuesday, Jake Lang said he ...

Jake Lang was charged with storming the U.S. Capitol on Jan. 6 and repeatedly assaulting police. Credit: U.S. Department of Justice Right-wing provocateur and avowed racist Jake Lang arrived in ...