How to disable breadcrumbs in eclipse
Something like http://loadcontext.blogspot.com/2008/08/eclipse-34-breadcrumbs-hide-and-show.html?
Customize Perspective, choose the Commands tab. In the Available command group, choose Java Editor Presentation. The Toolbar details shows the button for Toggle Breadcrumbs, which looks like a folder with a C in a circle with a black triangle on top of it.
Despite my absolute lack of experience with Eclipse, I suppose this setting must appear in other Presentation items too. After the button's enabled, all you have to do is click it. Or not?
If you are referring to the breadcrumbs in the help file of a RCP application, there is only a manual way to do it.
Find the file
org.eclipse.help.webapp\advanced\breadcrumbs.css
and replace its contents with.
.help_breadcrumbs {
display: none;
}
For the Java Editor breadcrumb, you need to assign a shortcut to the "Toggle Java Editor Breadcrumb" command (I have tested Alt+B, for instance)
That shortcut will make the breadcrumb bar appear/disappear at will.
With the editor window focussed, look for this icon in your toolbar:
And click on it. That's all. The icon is present by default, but can be deactivated, in which case you have to activated as in MvanGeest's answer.