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我需要在http://playground.arduino.cc/Interfacing/Java代码中将其指定为 PORT_NAMES。/jre/lib/ 和 /jre/lib/ext 目录在哪里?
控制面板,系统,您应该在硬件列表中看到您的 Arduino。右键单击并检查属性。连接的端口在那里。