code: public static void premain(final String agentArgs, final Instrumentation instrumentation) {
      System.out.println("Initialiting Appmon4jAgent");
  
      Appmon4JAgentConfiguration configuration = null;
      try {
        configuration = Appmon4JAgentConfiguration.load(agentArgs);
      } catch (Exception e) {
        System.err.println("failed to load appmon4j agent configuration from " + agentArgs + ".");
        e.printStackTrace();
      }
  
      if (configuration != null) {
        new Appmon4JAgent(configuration, instrumentation);
      } else {
        System.err.println("appmon4j Agent: Unable to start up. No valid configuration found. Will do nothing. ");
      }
    }
docs: The premain method to be implemented by java agents to provide an entry point for the instrumentation.
  
  @param agentArgs arguments passed to the agent.
  @param instrumentation the Instrumentation.