management-agent.jar has been removed. Tools that have been using the Attach API to load this agent into a running VM should be aware that the Attach API has been updated in JDK 9 to define two new methods for starting a management agent: * com.sun.tools.attach.VirtualMachine.startManagementAgent(Properties agentProperties) * com.sun.tools.attach.VirtualMachine.startLocalManagementAgent()