目录前言一、泛型（Generic）：编译时的类型安全保障1.1 泛型的核心作用1.2 泛型的基本用法1.2.1 泛型类与泛型接口1.2.2 泛型方法1.2.3 类型通配符（Wildcard）1.3 泛型的局限二、反射（Reflection）：运行时的类信息
I am trying to print the stack trace of the exception. However, for negative test case, only the unexpected exception is printed.
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