/* * @(#)HelloClient.java 1.5 05/11/17 * * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * -Redistribution of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * -Redistribution in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of Sun Microsystems, Inc. or the names of contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that this software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of any * nuclear facility. */ import java.rmi.RemoteException; import java.net.MalformedURLException; import java.rmi.NotBoundException; import javax.rmi.*; import java.util.Vector; import javax.naming.NamingException; import javax.naming.InitialContext; import javax.naming.Context; import javax.swing.*; import java.awt.*; import java.awt.event.*; public class HelloClient { static JTextArea textArea; java.awt.Container contentPane; JFrame t; public static void main( String args[] ) { Context ic; Object objref; HelloInterface hi; HelloClient helloClient = new HelloClient(); try { ic = new InitialContext(); } catch (NamingException e) { System.out.println("failed to obtain context" + e); textArea.append("Failed to obtain Context \n"); e.printStackTrace(); return; } // STEP 1: Get the Object reference from the Name Service // using JNDI call. try { objref = ic.lookup("HelloService"); System.out.println("Client: Obtained a ref. to Hello server."); textArea.append("Client Obtained a reference to Hello Server \n"); } catch (NamingException e) { System.out.println("failed to lookup object reference"); textArea.append("Failed to lookup object reference\n"); e.printStackTrace(); return; } // STEP 2: Narrow the object reference to the concrete type and // invoke the method. try { hi = (HelloInterface) PortableRemoteObject.narrow( objref, HelloInterface.class); hi.sayHello( " Java Web Start Application - HelloClient " ); textArea.append("Invoked method sayHello() successfully \n"); } catch (ClassCastException e) { System.out.println("narrow failed"); textArea.append("Narrow Failed\n"); e.printStackTrace(); return; } catch( Exception e ) { System.err.println( "Exception " + e + "Caught" ); e.printStackTrace( ); return; } textArea.append("Thanks for choosing Java Web Start\n"); } public HelloClient() { t = new JFrame("RMI-IIOP CORBA Sample"); contentPane = t.getContentPane(); contentPane.setLayout( new FlowLayout() ); contentPane.setBackground(Color.white); textArea = new JTextArea(); contentPane.add(textArea); textArea.setText("Welcome to HelloWorld RMI Client-Server demo\n"); textArea.append("RMI Client started by Java Web Start.\n"); t.addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e) { t.setVisible(false); System.exit(0); } }); t.pack(); t.setSize(500,400); t.setVisible(true); } }