voteserviceclient.java

java web services how to program

// VoteServiceClient.java 
// VoteServiceClient display the survey window.
package com.deitel.jws1.jaxrpc.voteclient;

// Java core packages
import java.awt.*;   
import java.awt.event.*;

// Java extension packages
import javax.swing.*;

// Java XML packages
import javax.xml.rpc.*;

// client packages
import vote.*;

public class VoteServiceClient extends JFrame
{
   // VoteServiceClient constructor
   public VoteServiceClient() 
   {
      super( "Vote Service Client" );

      // create JButton for getting Vote service
      JButton voteButton = new JButton( "Get Vote Service" );
      voteButton.addActionListener(

         new ActionListener() {

            // action for the voteButton
            public void actionPerformed( ActionEvent event )
            {
               String[] languages = 
                  { "C", "C++", "Java", "VB", "Python" };
         
               String selectedLanguage = ( String ) 
                  JOptionPane.showInputDialog( 
                  VoteServiceClient.this, 
                  "Select Language", "Language Selection", 
                  JOptionPane.QUESTION_MESSAGE, 
                  null, languages, "" );
      
               showVotes( selectedLanguage );

            } // end method actionPerformed

         } // end ActionListener

      ); // end call to addActionListener

      JPanel buttonPanel = new JPanel();
      buttonPanel.add( voteButton );
      getContentPane().add( buttonPanel, BorderLayout.CENTER );

   } // end VoteServiceClient constructor

   // connect to Vote Web service and get vote information
   public void showVotes( String languageName )
   {
      // connect to web service and get vote information
      try {

         // get web service stub
         Stub stub = ( Stub )
            ( new VoteService_Impl().getVotePort() );

         // cast stub to service interface
		 Vote vote = ( Vote ) stub;

		 // get vote information from web service
         VoteBean[] voteBeans = vote.addVote( languageName );  

		 StringBuffer results = new StringBuffer();
         results.append( "Vote result: \n" );

         // get vote information from voteBeans
         for ( int i = 0; i < voteBeans.length ; i++) {
            results.append( "   "
               + voteBeans[ i ].getLanguageName() + ":" );
            results.append( voteBeans[ i ].getCount() );
            results.append( "\n" );
         }

         // display Vote information
         JOptionPane.showMessageDialog( this, results );

      } // end try
      
      // handle exceptions communicating with remote object
      catch ( Exception exception ) {
         exception.printStackTrace();
      }

   } // end method showVotes

   // execute VoteServiceClient
   public static void main( String args[] )
   {
      // configure and display application window
      VoteServiceClient client = new VoteServiceClient();

      client.setDefaultCloseOperation( EXIT_ON_CLOSE );
      client.pack();
      client.setSize( 250, 65 );
      client.setVisible( true );  

   } // end main

} // end class VoteServiceClient