It is a shortcut. Like .quality above is short for .getQuality(). Jython automatically recognizes Java getters and setters that follow the NetBeans pattern and treats them as jython object attributes.
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object.getSomething()can be replaced withobject.something. -
object.setSomething(newValue)can becomeobject.something = newValue. - For booleans,
object.isSomething()becomesobject.something.
This is a standard across the Java ecosystem (JSP, Struts, et cetera).