在 Workspace 创建 resources

 IWorkspace workspace = ResourcesPlugin.getWorkspace();   IWorkspaceRoot root = workspace.getRoot();   IProject project  = root.getProject("MyProject");   IFolder folder = project.getFolder("Folder1");   IFile file = folder.getFile("hello.txt");   //at this point, no resources have been created   if (!project.exists()) project.create(null);   if (!project.isOpen()) project.open(null);   if (!folder.exists())       folder.create(IResource.NONE, true, null);   if (!file.exists()) {      byte[] bytes = "File contents".getBytes();      InputStream source = new ByteArrayInputStream(bytes);      file.create(source, IResource.NONE, null);   }