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Java/Java源代码/codedemo/java/lang/instrument/README.md Normal file
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# 一、Instrumentation入门
* [FirstTransformer.java](FirstTransformer.java) 处理字节码，由类FirstInstrumentation执行
* [FirstInstrumentation.java](FirstInstrumentation.java) instrumentation入口类，由javaagent载入执行
* [build.xml](build.xml) Ant脚本，负责编译、打包和运行
在当前目录下执行命令：
```bash
ant
```
输出信息如下：
> [java] instrument with options:"Hello, Instrumentation"
> [java] >>> java/lang/invoke/MethodHandleImpl
> [java] >>> java/lang/invoke/MethodHandleImpl$1
> [java] >>> java/lang/invoke/MethodHandleImpl$2
> [java] >>> java/util/function/Function
> [java] >>> java/lang/invoke/MethodHandleImpl$3
> [java] >>> java/lang/invoke/MethodHandleImpl$4
> [java] >>> java/lang/ClassValue
> [java] >>> java/lang/ClassValue$Entry
> [java] >>> java/lang/ClassValue$Identity
> [java] >>> java/lang/ClassValue$Version
> [java] >>> java/lang/invoke/MemberName$Factory
> [java] >>> java/lang/invoke/MethodHandleStatics
> [java] >>> java/lang/invoke/MethodHandleStatics$1
> [java] >>> sun/misc/PostVMInitHook
> [java] >>> sun/usagetracker/UsageTrackerClient
> [java] >>> java/util/concurrent/atomic/AtomicBoolean
> [java] >>> sun/usagetracker/UsageTrackerClient$1
> [java] >>> sun/usagetracker/UsageTrackerClient$4
> [java] >>> sun/usagetracker/UsageTrackerClient$3
> [java] >>> java/io/FileOutputStream$1
> [java] >>> sun/launcher/LauncherHelper
> [java] >>> cn/aofeng/demo/java/lang/instrument/Hello
> [java] >>> sun/launcher/LauncherHelper$FXHelper
> [java] >>> java/lang/Class$MethodArray
> [java] >>> java/lang/Void
> [java] >>> java/lang/Shutdown
> [java] >>> java/lang/Shutdown$Lock