Jabber,thank you for your care.
I've put two rows of data into the table, but the program never show me them, and the value of rSet.next() seems never to be false, so I got the endless while loop like this:

The age is: 0
The name is:
>>>>>>> 0
The age is: 0
The name is:
>>>>>>> 1
The age is: 0
The name is:
>>>>>>> 2
The age is: 0
The name is:
>>>>>>> 3
........