I have done with the following code to call web service.

Imports System.Net
Imports System.IO
Imports System.Text

Public Class ScheduleTrigger

    Public Shared Sub Main()
        Const Template As String = _
"<?xml version=""1.0"" encoding=""utf-8""?>" & vbCrLf & _
"<soap:Envelope xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" xmlns:soap=""http://schemas.xmlsoap.org/soap/envelope/"">" & vbCrLf & _
"  <soap:Body>" & vbCrLf & _
"    <RunResponse xmlns=""http://tempuri.org/"" />" & vbCrLf & _
"  </soap:Body>" & vbCrLf & _
"</soap:Envelope>"

        Dim url = New Uri("http://localhost/Schedule.asmx")

        Dim request As HttpWebRequest = WebRequest.Create(url)
        request.Method = "POST"
        request.ContentType = "text/xml; charset=utf-8"
        request.Headers.Add("SOAPAction", "http://tempuri.org/Run")

        Using stream = New MemoryStream()
            Using writer = New StreamWriter(stream, Encoding.UTF8)
                writer.Write(Template)
            End Using
            Dim bytes As Byte() = stream.ToArray()
            request.ContentLength = bytes.Length
            Using output = request.GetRequestStream()
                output.Write(bytes, 0, bytes.Length)
            End Using
        End Using

        Using response As HttpWebResponse = request.GetResponse()
            If response.StatusCode = HttpStatusCode.OK Then
                Console.Write("Success ")
                Console.WriteLine("Please Press Any Key to Exit!")
                Console.Read()
            End If

        End Using
    End Sub

End Class

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Snippet code as below:

/**
 *
 * @author LEE
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        String str = "eRs‘og";
        LegacyToUnicode legacyToUnicode = new LegacyToUnicode();
        System.out.println(legacyToUnicode.convert(str, "Limon S1"));
    }
}

Public Sub AutomaticLogin(ByVal userName As String)
Dim objUserInfo As UserInfo = UserController.GetUserByName(PortalId, userName)
UserController.UserLogin(PortalId, objUserInfo, PortalSettings.PortalName, Request.UserHostAddress, False)
Response.Redirect("/Home.aspx")
End Sub
Public Sub AutomaticLogin(ByVal userName As String)

Dim objUserInfo As UserInfo = UserController.GetUserByName(PortalId, userName)

UserController.UserLogin(PortalId, objUserInfo, PortalSettings.PortalName, Request.UserHostAddress, False)

Response.Redirect("/Home.aspx")

End Sub

string gMailAccount = "chem.leakhina@gmail.com";
            string password = "leakhina*147";
            string to = "chem.leakhina@gmail.com";
            NetworkCredential loginInfo = new NetworkCredential(gMailAccount, password);
            MailMessage msg = new MailMessage();
            msg.From = new MailAddress(gMailAccount);
            msg.To.Add(new MailAddress(to));
            msg.Subject = "subject";
            msg.Body = "message";
            msg.IsBodyHtml = true;
            SmtpClient client = new SmtpClient("smtp.gmail.com");
            client.EnableSsl = true;
            client.UseDefaultCredentials = false;
            client.Credentials = loginInfo;
            client.Send(msg);

  var theColorBegin = 0x632593;
  var theColorEnd = 0xFF7766;
  var theNumSteps = 5;

  theR0 = (theColorBegin & 0xff0000) >> 16;

  theG0 = (theColorBegin & 0x00ff00) >> 8;

  theB0 = (theColorBegin & 0x0000ff) >> 0;

  theR1 = (theColorEnd & 0xff0000) >> 16;

  theG1 = (theColorEnd & 0x00ff00) >> 8;

  theB1 = (theColorEnd & 0x0000ff) >> 0;

  // return the interpolated value between pBegin and pEnd

  function interpolate(pBegin, pEnd, pStep, pMax) {

    if (pBegin < pEnd) {

      return ((pEnd - pBegin) * (pStep / pMax)) + pBegin;

    } else {

      return ((pBegin - pEnd) * (1 - (pStep / pMax))) + pEnd;

    }

  }

  function generateColor(){
    for (i = 0; i <= theNumSteps; i++) {

      theR = interpolate(theR0, theR1, i, theNumSteps);

      theG = interpolate(theG0, theG1, i, theNumSteps);

      theB = interpolate(theB0, theB1, i, theNumSteps);

      theVal = ((( theR << 8 ) |  theG ) << 8 ) | theB;
      console.log(theVal.toString(16));
      }
  }

The result will display as below:
632593
82358a
a14581
c05678
df666f
ff7766

Answer:
Ubuntu Linux 7.10 has following packages from Sun:
=> sun-java6-bin : Sun Java Runtime Environment (JRE) 6

=> sun-java6-demo : Sun Java Development Kit (JDK) 6 demos

=> sun-java6-jdk : Sun Java Development Kit (JDK) 6

=> sun-java6-jre : Sun Java Runtime Environment (JRE) 6

Open a shell prompt (terminal) and type the following to install JDK and JRE:

$ sudo apt-get install sun-java6-bin sun-java6-jre sun-java6-jdk

Setup the default Java version

Ubuntu Linux comes with update-java-alternatives utility to updates all alternatives belonging to one runtime or development kit for the Java language. To select, Sun’s JVM as provided in Ubuntu 7.10, enter:

$ sudo update-java-alternatives -s java-6-sun

You also need to edit a file called /etc/jvm. This file defines the default system JVM search order. Each JVM should list their JAVA_HOME compatible directory in this file. The default system JVM is the first one available from top to bottom. Open /etc/jvm

$ sudo vi /etc/jvm

Make sure /usr/lib/jvm/java-6-sun is added to the top of JVM list

/usr/lib/jvm/java-6-sun

At the end your file should read as follows:

/usr/lib/jvm/java-6-sun
/usr/lib/jvm/java-gcj
/usr/lib/jvm/ia32-java-1.5.0-sun
/usr/lib/jvm/java-1.5.0-sun
/usr

Setup the environment variable

You also need to setup JAVA_HOME and PATH variable. Open your $HOME/.bash_profile or /etc/profile (system wide) configuration. Open your .bash_profile file:

$ vi $HOME/.bash_profile

Append following line:

export JAVA_HOME=/usr/lib/jvm/java-6-sun
export PATH=$PATH:$JAVA_HOME/bin

Test your new JDK
Type the following command to display version:

$ java -version

Output:

java version "1.6.0_03"
Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
Java HotSpot(TM) Server VM (build 1.6.0_03-b05, mixed mode)

Try HelloWorld.java – first java program

$ vi HelloWorld.java

Append code:

public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

Save and close the file. Compile HelloWorld.java and execute program by typing following two instructions:

$ javac HelloWorld.java
$ java HelloWorld

Output:

Hello, World!

import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
import javax.media.*;
import javax.media.format.*;
import javax.media.util.*;
import javax.media.control.*;
import javax.media.protocol.*;
import java.util.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import com.sun.image.codec.jpeg.*;
 
public class SwingCapture extends Panel implements ActionListener 
{
  public static Player player = null;
  public CaptureDeviceInfo di = null;
  public MediaLocator ml = null;
  public JButton capture = null;
  public Buffer buf = null;
  public Image img = null;
  public VideoFormat vf = null;
  public BufferToImage btoi = null;
  public ImagePanel imgpanel = null;
  
  public SwingCapture() 
  {
    setLayout(new BorderLayout());
    setSize(320,550);
    
    imgpanel = new ImagePanel();
    capture = new JButton("Capture");
    capture.addActionListener(this);
    
    String str1 = "vfw:Logitech USB Video Camera:0";
    String str2 = "vfw:Microsoft WDM Image Capture (Win32):0";
    di = CaptureDeviceManager.getDevice(str2);
    ml = di.getLocator();
    
    try 
    {
      player = Manager.createRealizedPlayer(ml);
      player.start();
      Component comp;
      
      if ((comp = player.getVisualComponent()) != null)
      {
        add(comp,BorderLayout.NORTH);
      }
      add(capture,BorderLayout.CENTER);
      add(imgpanel,BorderLayout.SOUTH);
    } 
    catch (Exception e) 
    {
      e.printStackTrace();
    }
  }
 
 
  
  public static void main(String[] args) 
  {
    Frame f = new Frame("SwingCapture");
    SwingCapture cf = new SwingCapture();
    
    f.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
      playerclose();
      System.exit(0);}});
    
    f.add("Center",cf);
    f.pack();
    f.setSize(new Dimension(320,550));
    f.setVisible(true);
  }
  
  
  public static void playerclose() 
  {
    player.close();
    player.deallocate();
  }
  
 
  public void actionPerformed(ActionEvent e) 
  {
    JComponent c = (JComponent) e.getSource();
    
    if (c == capture) 
    {
      // Grab a frame
      FrameGrabbingControl fgc = (FrameGrabbingControl)
      player.getControl("javax.media.control.FrameGrabbingControl");
      buf = fgc.grabFrame();
      
      // Convert it to an image
      btoi = new BufferToImage((VideoFormat)buf.getFormat());
      img = btoi.createImage(buf);
      
      // show the image
      imgpanel.setImage(img);
      
      // save image
      saveJPG(img,"c:\\test.jpg");
    }
  }
  
  class ImagePanel extends Panel 
  {
    public Image myimg = null;
    
    public ImagePanel() 
    {
      setLayout(null);
      setSize(320,240);
    }
    
    public void setImage(Image img) 
    {
      this.myimg = img;
      repaint();
    }
    
    public void paint(Graphics g) 
    {
      if (myimg != null) 
      {
        g.drawImage(myimg, 0, 0, this);
      }
    }
  }
  
 
  public static void saveJPG(Image img, String s)
  {
    BufferedImage bi = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
    Graphics2D g2 = bi.createGraphics();
    g2.drawImage(img, null, null);
 
    FileOutputStream out = null;
    try
    { 
      out = new FileOutputStream(s); 
    }
    catch (java.io.FileNotFoundException io)
    { 
      System.out.println("File Not Found"); 
    }
    
    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
    JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
    param.setQuality(0.5f,false);
    encoder.setJPEGEncodeParam(param);
    
    try 
    { 
      encoder.encode(bi); 
      out.close(); 
    }
    catch (java.io.IOException io) 
    {
      System.out.println("IOException"); 
    }
  }
  
}