Java使用agent实现main方法之前的实例详解

public class PreMainExecutor {  public static void premain(String agentOps, Instrumentation inst){    System.out.println("premain execute..........");  }}

Manifest-Version: 1.0Premain-Class:test.agent.PreMainExecutor

public class Test {  public static void main(String[] args){    System.out.println("main..........");  }}

java -javaagent:JavaAgent.jar Test

premain execute..........main..........