Do a google search for "Angelika Langer
Java equals method" or find the appropriate chapter in Joshua Bloch's
Effective Java, 1st edition or 2nd edition. Those sources both explain the difference.
And no capital letters in instanceof please.
For instanceOf() (presumably not InstanceOf())
you should look in the Java API documentation (I don't have a link to hand just at the moment, sorry) then INDEX then I, and you can find where that method comes from.