What is the easiest way for me to print to a Zebra printer from a Java Web application

We have a Java Web application that uses Spring MVC and Hibernate on the back end and JSP/JavaScript/jQuery on the front end. We have developed a web service integration with a FedEx web service that produces labels in various formats including ZPL2 and EPL2 format.

Link-OS SDK for Android | Permissions and Bluetooth API

Nowadays, most of our Zebra printers are equipped with Bluetooth (BT), Bluetooth Low Energy (BLE) or both (BT + BLE). There is a Bluetooth User Guide for Zebra printers, which covers how the Bluetooth technologies (both BT & BLE) are used in Zebra printer production lines, the security mode, pairing and configuration, etc.

Dynamic Field Data (^FN1) not recognized in PrintStation mode

I ve been using Zebra ZD620 as a standalone TOOLS->Print Station until yesterday when suddenly the printer stopped recognizing ^FN1 field in my E:LABEL.ZPL template.
Template is very simple and has 1 ^FN1 only to be filled by an external USB Host attached Scanner.
It has been working well and printer has been able to inject scanned code into template and have it printed out up until yesterday.
I am stuck, please help. I ve tried with other simple templates but none of ^FN is recognized by ""

PC .NET c# change from isPaused/isPaperOut to isReadyToPrint

We're using a Zebra ZD410-300dpi ZPL in an embedded application that will load labels separately as needed. I need to restore operations to our printer programmatically. When a particular error occurs, I run this (sequenced from several separate methods in my code);