Java异常处理挑战赛技术文章大纲

异常处理基础回顾

Java异常分类：Checked Exception与Unchecked Exception的区别
try-catch-finally块的标准用法与执行顺序
throws关键字在方法声明中的应用场景

常见异常处理挑战场景

多线程环境下的异常丢失问题与解决方案
Lambda表达式或Stream API中异常传播的局限性
资源泄漏风险与try-with-resources的最佳实践

高级异常处理技术

自定义异常的设计原则与业务应用实例
异常链（Exception Chaining）的合理使用方式
JDK14引入的instanceof模式匹配简化异常类型判断

性能优化与调试技巧

异常堆栈跟踪的内存开销分析与优化手段
JVM参数对异常处理性能的影响（如-XX:-OmitStackTraceInFastThrow）
日志框架中异常信息的结构化记录方法

挑战赛实战案例分析

时间敏感系统如何平衡异常处理与响应速度
分布式系统中跨服务异常传递的边界处理方案
基于Spring/AOP的全局异常拦截器设计模式

反模式与陷阱规避

过度捕获Exception导致的隐蔽问题
空指针异常的防御性编程替代方案
检查异常滥用对代码可读性的破坏案例

工具链与测试策略

JUnit5异常断言的多维度验证技巧
Arquillian容器测试中的异常模拟方法
JaCoCo覆盖率工具对异常分支的检测配置

新兴趋势与扩展思考

Project Loom虚拟线程对异常处理模型的影响
响应式编程中Publisher/Subscriber的异常传播机制
GraalVM原生镜像编译时的异常处理限制

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