Are the histogram libraries of JFreeChart accessible?

[PGriffith]

If the packages weren't available, you'd get an error on the import statement. The actual cause is Jython's slightly funky import statement behavior - check @pturmel's excellent explanation here:

Accessing com.inductiveautomation.ignition packages in Python

Let me elaborate a bit: The import behavior you were expecting corresponds to java’s import something.something.*;. But in java, an import is really just syntactical sugar for programmer convenience. A java programmer can always spell out full class names without any import statement. Python/jython doesn’t work this way. In python/jython, import is a fundamental operation that makes other packages available within the scope, optionally removing a package prefix or renaming the object into t…