Show Perspective switch bar in Eclipse RCP application

Open file ApplicationWorkbenchWindowAdvisor.java in your plug-in project.

Override the method, preWindowOpen and as shown below, setShowPerspectiveBar as True.

 @Override
    public void preWindowOpen ()
    {
        IWorkbenchWindowConfigurer configurer = getWindowConfigurer();
        configurer.setShowPerspectiveBar( true );
    }

Run your RCP application, and on Right side top, you will be able to see perspective Switch.

Following Books are good to refer :

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