- Constructor and setter for expire timestamp   can handle util.Date objects - Add toString() method
- Constructor and setter for expire timestamp
  can handle util.Date objects
- Add toString() method

git-svn-id: 526f3b90ad6d9b1dfe840af828070ca3d99521ac@6478 d2cacbed-c0f6-0310-851a-9dad52fc623a

johannes85/core