This is all done in Java. How do i convert a multi line list into a single line....

(the address is being read from a file so dont worry about how its reading it)

Input:

John and Jane Doe

500 St. Laurent Blvd

Ottawa, ON

K1K 4T6

David Smith

6537 Laurier Street West

Ottawa, ON

Andrew Lukas, Angela Lincoln

3-175 Woodroffe Ave

Nepean, ON

K2J 4Y7

Output:

John,Doe,Jane,Doe,500,StLaurent,Blvd,,Ottawa,ON

David,Smith,,,6537,Laurier,Street,W,Ottawa,ON

Andrew,Lukas,Angela,Lincoin,175,Woodroffe,AVE,,Nepean,ON