serial port and usb

هذا مثال لإستخدام السيريال بورت إن شاء الله يكون واضح

import java.io.IOException;

import jcontrol.comm.DisplayConsole;
import jcontrol.comm.RS232;
import jcontrol.io.Display;

/**
 * <p>RS232Example shows how to write a RS232 terminal
 * for JControl using the API classes <code>RS232</code>
 * and <code>DisplayConsole</code>.</p>
 * 
 * (C) DOMOLOGIC Home Automation GmbH 2003
 */
public class RS232Example {
  /** RS232 access */
  RS232 rs232;
  /** DisplayConsole */
  DisplayConsole console;

  /** baud rate */
  final static int BAUDRATE = 19200;   

  /**
   * Init and start the RS232 console.
   */
  public RS232Example() {    
    // init RS232 access
    try {
      rs232 = new RS232(BAUDRATE);
    } catch (IOException e) {
      new Display().drawString("IOError!",0,0);
    }

    // init DisplayConsole
    console = new DisplayConsole();

    // say hello
    console.println("JControl RS232 Terminal ready.");

    // start RS232 terminal
    terminal();
  }

  /**
   * The RS232 terminal implementation
   */  
  void terminal() {
    String s;

    // continuously receive from RS232 and write to lcd
    for (;;) {
      try {
        s = rs232.readLine();
        console.println(s);
      } catch (IOException e) {
        // reset errorflag
        rs232.errorCode();
      }      
    }
  }

  /**
   * Main method. Program execution starts here.
   */
  public static void main(String[] args) {
    new RS232Example();
  }
}