To reveal a package in the tree of the Package Explorer:
Select Navigate > Go To >
Package from the menu bar. The Go to Package dialog
opens.
Type a package name in the Choose a package field to
narrow the list of available packages, using wildcards as needed. As you
type, the list is filtered to display only packages that match the
current expression.
Select a package from the list, then click OK. The
selected package is displayed in the Package Explorer.