List all 4-digit integers in Java [on hold]

I need a program that stores all 4 digit numbers as Stings which has the following attributes:

• 4 digits long


• every number appears only once


• there isn't 0 (only 1-9)

Actually I need something like this:

String[] s = {"1234","1235","1236,"1237","1238","1239","1245","1246",..,"9875","9876"}