Acessando o nomes dos pacotes com código fonte.

SampleHandler.java

	/**
	 * the command has been executed, so extract extract the needed information
	 * from the application context.
	 *
	 * @see {https://github.com/samueltcsantos/eclipse-jdt}
	 *
	 */
	public Object execute(ExecutionEvent event) throws ExecutionException {

		IWorkspace workspace = ResourcesPlugin.getWorkspace();
		IWorkspaceRoot root = workspace.getRoot();
		
		IProject[] projects = root.getProjects();
		
		for (IProject project : projects){
			
			try {
				IJavaProject javaProject = createIJavaProject(project);
				for (IPackageFragment myPackage : getProjectPackages(javaProject)){
					
					//only at the package from the source folder
					if (myPackage.getKind() == IPackageFragmentRoot.K_SOURCE){
						System.out.println("Package Name: " + myPackage.getElementName());
					}
					
				}
			} catch (CoreException e) {
				e.printStackTrace();
			}
			
		}
		
		return null;
	}