本文介绍了两种在Java中打印当前堆栈跟踪的方法：通过创建一个新的Exception实例并调用其printStackTrace()方法；或者使用Thread.currentThread().getStackTrace()来获取表示程序当前堆栈的StackTraceElement数组。
When debugging java code, sometimes it's important to know where you come from. So you can print current stack trace to help you.
1. new Exception().printStackTrace();
2. Thread.currentThread().getStackTrace(); This returns an array of StackTraceElement that represents current stack of your program.
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