In kettle js is used to call methods of Java classes

1. Jars need to be placed in kettle's libext directory in advance, and all jars in the libext directory will be automatically loaded when kettle starts.

2. The modified Java script step selects the compatibility mode and sets the content to the field of the output.

The code is as follows:

    var  variable  = new Packages. The package name ( parameter  );