Error installing software and environment variables

Question

I want to install a software using the following command in my command prompt:

java -Xmx256m -Xms64m -jar TreeForm.jar

However what I get is:

Exception in thread "main" java.lang.NoClassDefFoundError: sun.misc.Launcher
        at userInterface.Start.<clinit>(Start.java:54)Exception in thread "main" 

And if I define an environment variable as _JAVA_OPTIONS = -Xmx256m -Xms64m , with an additional line on top:

Picked up _JAVA_OPTIONS: -Xmx256m -Xms64m
Exception in thread "main" java.lang.NoClassDefFoundError: sun.misc.Launcher
        at userInterface.Start.<clinit>(Start.java:54)

How can I solve this? I'm using Windows.

Answer 1

Please check the java version you are running. If my memory is correct then sun.misc.* has been removed starting java 9. Please check you are using your java version with the command.

java -version