René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"getActiveUsbConfiguration() is null in macOS.","articleBody":"Hi,\r\n    I implement java application in OS X platform. I found usb4java that I need to communicate with USB device. Then I followed Quick Start to port USB function. But it failed in \r\nUsbConfiguration configuration = device.getActiveUsbConfiguration();\r\nThe variable of configuration is null. Cloud you please help me to fix it?\r\n\r\n    Another strange point is I included usb4java with 1.3.0 in pom.xml. But the result showed Implementation version is 1.2.0.  Is that right?\r\nThe code as below:\r\nfinal UsbServices services = UsbHostManager.getUsbServices();\r\n        System.out.println(\"USB Service Implementation: \"\r\n            + services.getImpDescription());\r\n        System.out.println(\"Implementation version: \"\r\n            + services.getImpVersion());\r\n        System.out.println(\"Service API version: \" + services.getApiVersion());\r\n\r\n\r\n\r\n**Environment:**\r\n - OS: macOS   10.15.7\r\n - Java version   15.0.2\r\n - usb4java version  1.3.0\r\n\r\n\r\n\r\n","author":{"url":"https://github.com/KevinCWKevin","@type":"Person","name":"KevinCWKevin"},"datePublished":"2021-02-24T10:08:41.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/84/usb4java/issues/84"}