No! Do not call the judge “Boss”.
When you appear in the High Court or the Supreme Court do what the Minister for Justice has directed HERE.
Call the judge “Judge” (unless he/she is the Chief Justice (or the President of the High Court)).
(It took a very long time to get rid of “their Lordships”. Should we not now discontinue the use of the Irish harp as a symbol of the State? In Italy, the courts exercise power “In the Name of the People”. To corrupt that is more difficult than to hijack an abstract symbol like a harp.)