mport java.io.*; 
import java.util.*; 
 
public class Communicator { 
     
    private native boolean openPort(String port); 
    private native boolean closePort(); 
    private native boolean setCommProperties(int baud); 
    private native byte read(); 
    private native boolean write(byte[] sendPacket); 
    private native boolean setTimeout(int timeout); 
     
    static { 
        System.loadLibrary("communications"); 
    } 
     
    public boolean Open(String port) { 
        return openPort(port); 
    } 
     
    public boolean Close() { 
        return closePort(); 
    } 
     
    public boolean setupPort(int baud) { 
        return setCommProperties(baud); 
    } 
     
    public boolean setPortTimeout(int timeout) { 
        return setTimeout(timeout); 
    } 
     
    public byte getReply() throws Exception{ 
        return read(); 
    } 
     
    public boolean writePacket(byte[] sendPacket) { 
        return write(sendPacket); 
    } 
}