Final answer:
The halt(int) method of the Runtime class can be used to stop the shutdown sequence and terminate the Java Virtual Machine (JVM) immediately.
Step-by-step explanation:
The method of the Runtime class that can be used to stop the shutdown sequence is the halt(int) method. This method stops the shutdown process and shuts down the Java Virtual Machine (JVM) immediately. The halt(int) method takes an integer argument as the exit status code and terminates the JVM.