Listening for events

For an object to listen for events published by the Scp class the following steps are required:

1. Set object to implement ScpEventListener class.

2. Overload event handling methods.

3. Subscribe object to receive events published by Scp instance.

Example

The example below demonstrates using the ScpEventListener class.

import java.io.*;

import com.jscape.inet.scp.Scp;

import com.jscape.inet.scp.events.*;

import com.jscape.inet.ssh.util.SshParameters;

public class ScpExample implements ScpEventListener {

 public ScpExample(String hostname, String username, String password, String filename, String destination) throws Exception        {

         // create new SshParamters instance

         SshParameters params = new SshParameters(hostname,username,password);

         // create new Scp instance

         Scp scp = new Scp(params);

         // register event listener

         scp.addListener(this);

         // establish connection

         scp.connect();        

         // upload file

         scp.upload(new File(filename),destination);

         // disconnect

         scp.disconnect();

 }

 public void download(ScpFileDownloadedEvent evt) {

         System.out.println("Downloaded file: " + evt.getFilename());        

 }

 public void upload(ScpFileUploadedEvent evt) {

         System.out.println("Uploaded file: " + evt.getFilename());

 }

 public void progress(ScpTransferProgressEvent evt) {

         System.out.println("Transfer progress: " + evt.getFilename() + " " + evt.getTransferredBytes() + " bytes.");

 }

 public void connected(ScpConnectedEvent evt) {

         System.out.println("Connected to host: " + evt.getHost());

 }

 public void disconnected(ScpDisconnectedEvent evt) {

         System.out.println("Disconnected from host: " + evt.getHost());

 }

 public static void main(String[] args) {

         try {

                 // collect connection details and launch example

                 BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

                 System.out.print("Enter SCP hostname: ");

                 String hostname = reader.readLine();

                 System.out.print("Enter SCP username: ");

                 String username = reader.readLine();

                 System.out.print("Enter SCP password: ");

                 String password = reader.readLine();

                 System.out.print("Enter file to upload e.g. c:/tmp/test.txt : ");

                 String filename = reader.readLine();

                 System.out.print("Enter destination directory with ending path separator e.g. /home/user/ : ");

                 String destination = reader.readLine();

                 ScpExample example = new ScpExample(hostname,username,password, filename, destination);                        

         } catch(Exception e) {

                 e.printStackTrace();

         }                

 }

}