Java Serial Ports

Java Serial Ports are used for serial communication with windows applications. Many options are available to work with serial ports, but most are out of date.

Even the Java API javax.comm is deprecated in new versions. This tutorial demonstrates how to work with serial ports in Java.

Java Serial Ports Using JSerialComm API

JSerialComm is a Java library, which provides a platform-independent way to use serial ports, and we don’t require external libraries. The JSerialComm is the best alternative to outdated RxTx and deprecated javax.comm libraries.

JSerialComm is easy to use and has enhanced timeouts support. It also supports opening multiple ports simultaneously.

Follow the steps to use the serial ports in Java.

1. First of all, download JSerialComm.

   

2. Add the jar file to your build path, and then you are ready to use JSerialComm.

Let’s try a simple example to print the serial ports on our device. It should be mentioned here that if your device doesn’t have ports, the code will not print any port.

See example.

package delftstack;

import com.fazecast.jSerialComm.SerialPort;

public class Serial_Port {
  public static void main(String[] args) {
    System.out.println("Hello this is a java program to check ports from delftstack");

    SerialPort[] Device_Ports = SerialPort.getCommPorts();

    for (SerialPort each_port : Device_Ports) {
      System.out.println(each_port.getSystemPortName());
    }
  }
}

It doesn’t show any ports for our system because it doesn’t have any ports, shown from the output and the device manager screenshot.

Hello this is a java program to check ports from delftstack

This link also provides a Java project in a zip file that can be imported. This project has a test program that shows almost all the operations of serial ports.