apangin

import com.sun.tools.attach.VirtualMachine;

import java.nio.file.Paths;

public class InjectAgent {

    public static void main(String[] args) throws Exception {
        String PID = args[0];
        String agentJar = Paths.get("retransformer.jar").toAbsolutePath().toString();

apangin

import java.lang.instrument.*;
import java.security.ProtectionDomain;

public class GetBytecode implements ClassFileTransformer {
    private static Instrumentation inst;

    public static synchronized void agentmain(String args, Instrumentation inst) {
        GetBytecode.inst = inst;
    }