A Java Class to upload files trough FTP

Download the class Ftp.java

    * FILE: Ftp.java
    * DESCRIPTION: A ftp uploader GUI class
    * LIMITATION: Uses AWT instead of SWING
    * VERSION: 09-Feb-2006
    * Olaf says:
    * -- Remenber, all is posible but the problem
    * is the time you are able to spend doing it. --

    import java.io.*;
    import java.net.*;
    import java.awt.*;

    * An ftp uploader class (GUI File Selector)
    * @author Olaf Reitmaier ([email protected])
    public class Ftp{

    public static void main(String args[]) throws Exception{

    int PIECE_SIZE = 7000; //Byte transfer rate (56 Kbps = 7KB)
    int bytes = 0; //Temp var of read bytes
    byte[] piece = new byte[PIECE_SIZE]; //Temp var of file pieces

    String server = "a_server_ip"; //The ftp server
    String user = "an_user"; //The ftp user
    String password = "a_passwd"; //The ftp password

    String[] files=selectFile();

    if(files[0]!=null && files[1]!=null){

    String localFile = files[0]+File.separator+files[1];
    String remoteFile = "/"+files[1];

    String strUrl = "ftp://"+user+":"+password+"@"+server+remoteFile+";type=i";

    URL url = new URL(strUrl);
    URLConnection urlc = url.openConnection();

    FileInputStream fis = new FileInputStream(new File(localFile));
    OutputStream os = urlc.getOutputStream();

    bytes = fis.available();
    if (bytes<=0){ break; }else{ if (bytes>=PIECE_SIZE){
    os.close(); //Close the remote file stream
    fis.close(); //Close the local file stream

    * An AWT File Chooser
    * Courtesy of Jose Carrero <[email protected]>

    * @return A string array with the first position

    * containing the fullpath of the selected file


    public static String[] selectFile(){

    String[] files=new String[2];

    Frame frame=new Frame();

    FileDialog file_chooser=new FileDialog(frame);




    file_chooser.dispose(); //Needed to terminates the program

    frame.dispose(); //Needed to terminates the program

    return files;



Updated: 2010/02/21


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