Where java.io.File is the class to be imported.įor the most common stuff like e.g. You can specify imports in JavaScript as follows: In short: auto-imports are dangerously imprecise. What if two classes of the same name live in two different packages? Or if a new class is introduced that makes formerly unique names ambiguous? All of a sudden, all of the scripts that reference the original class no longer work. The rationale is that the auto-import feature is not safe. Consequently, scripts written for ImageJ 1.x will not run in ImageJ2 without adding the proper imports. Unlike ImageJ 1.x, ImageJ2 (and therefore Fiji) does not automatically import any classes. To reference Java classes from JavaScript you will need to import them. JavaScript tutorial for ImageJ Language basics Importing classes The two engines are largely, but not completely, compatible-meaning that some older scripts written for older versions of ImageJ (which used Rhino) may no longer function correctly when run with current ImageJ versions (which use Nashorn). Versions of Java before Java 8 instead included Mozilla's Rhino JavaScript engine. ImageJ supports JavaScript via Java's built-in Nashorn JavaScript engine. 2.4 Multithreaded Image Processing in Javascript.2.2.4 Inspect java methods and fields in an object.2.2.1 Opening and creating ImageJ images.2.1.6 Inspecting fields and methods of an object.
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