Java

import gnu.io.*;

public class demo 
{
	public static void main(String[] args) 
	{
		listPorts();
	}
	static void listPorts()
    {
        java.util.Enumeration<CommPortIdentifier> portEnum = CommPortIdentifier.getPortIdentifiers();
        while ( portEnum.hasMoreElements() ) 
        {
            CommPortIdentifier portIdentifier = portEnum.nextElement();
            System.out.println(portIdentifier.getName()  +  " - " +  getPortTypeName(portIdentifier.getPortType()) );
        }        
    }
    
    static String getPortTypeName ( int portType )
    {
        switch ( portType )
        {
            case CommPortIdentifier.PORT_I2C:
                return "I2C";
            case CommPortIdentifier.PORT_PARALLEL:
                return "Parallel";
            case CommPortIdentifier.PORT_RAW:
                return "Raw";
            case CommPortIdentifier.PORT_RS485:
                return "RS485";
            case CommPortIdentifier.PORT_SERIAL:
                return "Serial";
            default:
                return "unknown type";
        }
    }
}

// Call getAvailableSerialPorts(); from your main method dont forget to include import java.util.*;
public static HashSet<CommPortIdentifier> getAvailableSerialPorts() {
        HashSet<CommPortIdentifier> h = new HashSet<CommPortIdentifier>();
        Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
        while (thePorts.hasMoreElements()) {
            CommPortIdentifier com = (CommPortIdentifier) thePorts.nextElement();
            switch (com.getPortType()) {
            case CommPortIdentifier.PORT_SERIAL:
                try {
                    CommPort thePort = com.open("CommUtil", 50);
                    thePort.close();
                    h.add(com);
                } catch (PortInUseException e) {
                    System.out.println("Port, "  + com.getName() + ", is in use.");
                } catch (Exception e) {
                    System.err.println("Failed to open port " +  com.getName());
                    e.printStackTrace();
                }
            }
        }
        return h;
    }

pohcb_sonic wrote:

the message being sent over looks something like "@.pp...." in my output

import java.io.*;
import java.lang.*;

public class ByteToHexa{
  public static void main(String[] args) throws IOException{
    BufferedReader buff = new BufferedReader(new InputStreamReader(System.in));
    System.out.println("Enter the byte number:");
    byte b =(byte)6;
    String str = buff.readLine();
    int i =Integer.parseInt(str);
    String hexString = Integer.toHexString(i);
    System.out.println("Hexa is:=" + hexString);
  }
}

Member 4277480 wrote:

Does this do it?

pohcb_sonic wrote:

However, when I tried to send data over to the other PC, the message being sent over looks something like "@.pp...." in my output, which is incorrect. I wanted the output to be in hex, something like
"AA BC 25 EE AC...".

Member 4277480 posted this code:

  public static void main(String[] args) throws IOException{
    BufferedReader buff = new BufferedReader(new InputStreamReader(System.in));
    System.out.println("Enter the byte number:");
    byte b =(byte)6;
    String str = buff.readLine();
    int i =Integer.parseInt(str);
    String hexString = Integer.toHexString(i);
    System.out.println("Hexa is:=" + hexString);
  }
}

byte b =(byte)6;

Member 4277480 wrote:

then use the Integer.toHexString(i); to get the Hex of that message from every byte in that array. This in short is a simulation of what is to be done not the exact code to do it.

<small><br />
<br />
ERROR: SerialComm.Comms<br />
ERROR: null<br />
ERROR: SerialComm.Comms<br />
ERROR: null<br />
<br />
</small>

<small><br />
<br />
try{<br />
<br />
<br />
connect("COM2");<br />
}catch (Exception e) {<br />
System.err.println("ERROR: " + e.getMessage()); //this is where the "ERROR: SerialComm.Comms" starts.<br />
<br />
}<br />
<br />
}<br />
<br />
<br />
try{ <br />
C1.sendBytes(BytetxtMsg); <br />
} catch (Exception e) {<br />
System.err.println("ERROR: " + e.getMessage()); //this is where the "ERROR: null" starts.<br />
<br />
}<br />
<br />
</small>

import java.awt.*;
import com.lowagie.text.*;
import com.lowagie.text.pdf.*;
import java.io.*;
import java.util.zip.*;

public class TextToPDF{
  public static void main(String arg[]){
    try{
      InputStreamReader in= new InputStreamReader(System.in);
      BufferedReader bin= new BufferedReader(in);
      System.out.println("Enter text:");
        String text=bin.readLine();
        Document document = new Document(PageSize.A4, 36, 72, 108, 180);
        PdfWriter.getInstance(document,new FileOutputStream("pdfFile.pdf"));
        document.open();
        document.add(new Paragraph(text));
        System.out.println("Text is inserted into pdf file");
        document.close();
    }catch(Exception e){}
  }
}

akashj87 wrote:

FileOutputStream fos=new FileOutputStream("file.pdf");