Eclipse 3.4 Ganymede comes with a very handy Breadcrumbs Navigator which creates a breadcrumb above the source code editor. To open it, right click on the Java Editor and choose “Show in Breadcrumb”. Or simply toggle this navigator with the toolbar button:

For those of you who are unaware of what breadcrumbs do, it is navigation aid used in user interfaces. The term breadcrumbs comes from the trail of breadcrumbs left by Hansel and Gretal in the famous fairytale. It is a method for users to keep track of their locations in programs or documents.
With NetBeans, I would never have to google it for something so trivial
The title says “Eclipse 3.4 Show and Hide Breadcrumbs” but i couldn’t find information about how to hide it in your article.
Just click the toolbar button highlighted in the image, mate.