Returns the other Component involved in this focus change. For a
FOCUS_GAINED event, this is the Component that lost focus. For a
FOCUS_LOST event, this is the Component that gained focus. If this
focus change occurs with a native application, with a Java application
in a different VM or context, or with no other Component, then null is
returned.
Returns:
the other Component involved in the focus change, or null
Since:
1.4