You can create a new Eclipse plugin that registers a listener for resource changes in the workspace. From these change notifications, you can find out if the user creates a specific folder.
eclipse.org :
IResourceChangeListener, , , , .
snipet,
IWorkspace workspace = ResourcesPlugin.getWorkspace();
IResourceChangeListener listener = new IResourceChangeListener() {
public void resourceChanged(IResourceChangeEvent event) {
System.out.println("Something changed!");
}
};
workspace.addResourceChangeListener(listener);
eclipse, :
eclipse.org/articles/Article-Your%20First%20Plug-in/YourFirstPlugin.html