Some troubles

Every time when I face a problem that fuzzy me for a long time. I will surf the internet to find some ways and solve it.
Today, I wanna use Java to run JavaScript, then I follow the instructions and use Javax. script package to run it, and install dependencies, ok, I can run sample scripts finally. But when I use it to run webssdk.js, the JVM report an error, runs script exception, and ‘global’ is undefined, what the fuck? I can bear that the script is right, which case this problem, now I am finding it.