How to reopen closed tab in custom intellij plugin?

No, you should manage reopening by yourself as in most cases closing means "release resources to avoid memory leaks".

Is there any way to open and close only one tab of the toolwindow in intellij custom plugin?

Sure, please use methods of ContentManager to manage tabs (you can get it via ToolWindow.getContentManager())

I have tried adding:-

public void createToolWindowContent(@NotNull Project project, @NotNull ToolWindow toolWindow) {
    this.toolWindow = toolWindow;
    this.project = project;
    ContentFactory contentFactory = ContentFactory.SERVICE.getInstance();
    Content content = contentFactory.createContent(windowContent, DEVICES_WINDOW_ID, false);
    toolWindow.getComponent().putClientProperty(ToolWindowContentUi.HIDE_ID_LABEL, "true");
    toolWindow.getContentManager().addContent(content);
     content.setCloseable(true);
    content.setShouldDisposeContent(true);
     content.shouldDisposeContent();
     content.isCloseable();
}


But still the tab is not closeable.

Are you sure you specify <toolWindow canCloseContents="true"... in plugin.xml for this certain toolwindow?

Content is closable by default but ContentManager has its own flag for all contents and this flag comes from plugin.xml

Also setShouldDisposeContent(true) is useless in your example as this property it true by default