What are Java command line options to set to allow JVM to be remotely debugged?

To allow the Java Virtual Machine (JVM) to be remotely debugged, you can use the following command line options:

  • -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=<debug-port>

This option enables the Java Debug Wire Protocol (JDWP) agent and specifies the transport, server mode, suspension, and address for the debugger. The <debug-port> is the port number that the debugger will use to connect to the JVM.

For example:

java -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=8000 MyClass

In this example, the JDWP agent is enabled and configured to use the socket transport, run in server mode, not suspend the JVM, and listen on port 8000 for the debugger to connect.

  • -Xdebug

This option enables debugging support.

For example:

java -Xdebug -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=8000 MyClass

In this example, the -Xdebug option is used in conjunction with the -agentlib:jdwp option to enable debugging support.

Once you have set these options, you can use a debugger, such as jdb, to connect to the JVM and debug your application.

I hope this helps! Let me know if you have any questions.