Running JMeter from apachejmeter.jar - Giving an error in the Jmeter Script execution, Works when run with jmeter.bat file

Question

I have a simple JMeter script, where I am using parallel controller to send few GET requests. When I am running the script,by loading the JMeter using jmeter.bat file. The Jmeter Test works without any error. When I am running JMeter from ApacheJmetr.jar file from the bin, I am getting the below error So I wanted to know what exactly is the difference as it is working from jmeter.bat file and not from apachejmeter.jar file.

java.lang.reflect.InaccessibleObjectException: Unable to make field java.lang.ThreadLocal$ThreadLocalMap java.lang.Thread.inheritableThreadLocals accessible: module java.base does not "opens java.lang" to unnamed module @222114ba
    at java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354) ~[?:?]
    at java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) ~[?:?]
    at java.lang.reflect.Field.checkCanSetAccessible(Field.java:180) ~[?:?]```

Answer 1

jmeter.bat startup script is a wrapper which generates some parameters for the Java Virtual Machine, in particular your error is due to missing parameterse which are set in line 112 (for JMeter 5.5 )

So you either need to:

1. Downgrade your Java to Java 8

2. Or to add the same JVM arguments as jmeter.bat startup script does, to wit:

    java --add-opens java.desktop/sun.awt=ALL-UNNAMED --add-opens java.desktop/sun.swing=ALL-UNNAMED --add-opens java.desktop/javax.swing.text.html=ALL-UNNAMED --add-opens java.desktop/java.awt=ALL-UNNAMED --add-opens java.desktop/java.awt.font=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.text=ALL-UNNAMED --add-opens=java.desktop/sun.awt.shell=ALL-UNNAMED -jar ApacheJMeter.jar