"A positive value indicates that the cookie will expire after that many seconds have passed. Note that the value is the maximum age when the cookie will expire, not the cookie's current age.
A negative value means that the cookie is not stored persistently and will be deleted when the Web browser exits. A zero value causes the cookie to be deleted."
But I want to know how we can make the cookie live forever.
One example for this is our Javaranch where you log in once and every time you visit, you are automatically logged in and this stayed on my machine for more than 6 months and it continues. Am I right Christoph?