Exception in thread "main" java.lang.NumberFormatException: For input string: "--help" at java.base/java.lang.NumberFormatException.forInputString(Unknown Source) at java.base/java.lang.Integer.parseInt(Unknown Source) at java.base/java.lang.Integer.parseInt(Unknown Source) at org.apache.jmeter.util.ShutdownClient.main(ShutdownClient.java:35)