Replace loaded class by using java instrument API
usage:
java -cp <jdk_path>/lib/tools.jar:./hotswap.jar com.github.jvmtool.hotswap.Main <pid> <path_to_class_file>
or
java -cp <jdk_path>/lib/tools.jar:./hotswap.jar com.github.jvmtool.hotswap.Main <pid> <path_to_class_file> <class_full_name>