How to run a command when the eclipse plugin is clicked?

Question

I have a Plug-in Project in my Eclipse workspace. When I right click the project and click on 'Run as Eclipse Application', another Eclipse instance is opened and the plug-in is installed successfully. When the plug-in button is clicked, the application opens.

However, when I export the project, create the jar and place the jar under plugins folder, I'm able to see the plugin button, but when I click it, the application is not opening.

Below, I show the java class that is being executed:

Bundle bundle = Platform.getBundle("com.example.eclipse.plugin");
        URL url = FileLocator.find(bundle, new Path("webspy/lib/abc.jar"), null);
        File file=null;
        try {
            url = FileLocator.toFileURL(url);
            file = URIUtil.toFile(URIUtil.toURI(url));

            String[] str={"java", "-jar", file.getAbsolutePath()};
            ProcessBuilder pb = new ProcessBuilder(str);
            Process p = pb.start();
        } catch (URISyntaxException e1) {
            e1.printStackTrace();
        } catch (IOException e1) {
            e1.printStackTrace();
        }

The plugin.xml file is the following:

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

   <extension
         point="org.eclipse.ui.actionSets">
      <actionSet
            label="Sample Action Set"
            visible="true"
            id="com.example.eclipse.plugin.actionSet">
         <menu
               label="FEAT"
               id="sampleMenu">
            <separator
                  name="StartWebSpy">
            </separator>
         </menu>
         <action
               label="&amp;Start WebSpy"
               icon="icons/sample.gif"
               class="com.example.eclipse.plugin.actions.SampleAction"
               tooltip="Start WebSpy"
               menubarPath="sampleMenu/sampleGroup"
               toolbarPath="sampleGroup"
               id="com.example.eclipse.plugin.actions.SampleAction">
         </action>
      </actionSet>
   </extension>

</plugin>

It has to run an executable jar once the button is clicked. This is not happening when the plugin jar is placed in plugins folder. Please help what am I missing.

Answer 1

The problem is that your JAR file webspy/lib/abc.jar is not being included in your exported plug-in com.example.eclipse.plugin . For this reason, when you click the button, the application is not opened (because the JAR file cannot be found). Check the Error Log (Window -> Show View -> Error Log) and you will see an Unhandled event loop exception .

To solve this issue, you must explicitly state that the abc.jar file is included in your exported plug-in. This can be done in the build.properties file (in particular, in the Binary Build section) by checking the checkbox of the abc.jar file.