We will create a command which will exit the application. Create a new RCP project "de.vogella.rcp.commands.first" using the "Hello RCP" template. Click on the plugin.xml and select the Extensions tab. Press the "Add" button.

Search for the extension "org.eclipse.ui.commands". Select it and press finish.

Create a new command by right-clicking on your extension point and by selecting New -> command.

Set the ID to "de.vogella.rcp.commands.first.commands.Exit" and the name to "Exit". Enter the class "de.vogella.rcp.commands.first.commands.ExitHandler" as defaultHandler.

Press the hyperlink "defaultHandler" to create the class which should extend "org.eclipse.core.commands.AbstractHandler".

			
package de.vogella.rcp.commands.first.commands;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.ui.handlers.HandlerUtil;

public class ExitHandler extends AbstractHandler {

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		HandlerUtil.getActiveWorkbenchWindow(event).close();
		return null;
	}

}

		

The command which we defined should be used in a menu. Add the extension point "org.eclipse.ui.menus" to your application similar to adding the extension "org.eclipse.ui.commands". Right click on the extension point and select new -> menuContribution.

Create a new menu contribution with the location URI "menu:org.eclipse.ui.main.menu". Make sure this URL is correct otherwise your menu will not be shown.

Right click your menucontribution and select New -> Menu. Add a menu with the label "File" and the id "fileMenu".

Select your menu, right-click on it, select New-> Command. Maintain your commandID. Set the label to "Exit" and the tooltip to "Exits the application".

Your work should result in a plugin.xml file which looks like the following.

			
<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>

   <extension
         id="application"
         point="org.eclipse.core.runtime.applications">
      <application>
         <run
               class="de.vogella.rcp.commands.first.Application">
         </run>
      </application>
   </extension>
   <extension
         point="org.eclipse.ui.perspectives">
      <perspective
            name="RCP Perspective"
            class="de.vogella.rcp.commands.first.Perspective"
            id="de.vogella.rcp.commands.first.perspective">
      </perspective>
   </extension>
   <extension
         point="org.eclipse.ui.commands">
      <command
            defaultHandler="de.vogella.rcp.commands.first.commands.ExitHandler"
            id="de.vogella.rcp.commands.first.commands.Exit"
            name="Exit">
      </command>
   </extension>
   <extension
         point="org.eclipse.ui.menus">
      <menuContribution
            locationURI="menu:org.eclipse.ui.main.menu">
         <menu
               id="fileMenu"
               label="File">
            <command
                  commandId="de.vogella.rcp.commands.first.commands.Exit"
                  label="Exit"
                  style="push"
                  tooltip="Exit the application">
            </command>
         </menu>
      </menuContribution>
   </extension>

</plugin>

		

Run the example. You should see menu with the file and if you select the "Exit" entry you application should exit.