Revert "add by user2"

This reverts commit dd067bdc13ea990c89926b43d2fd52e5153e9737.

Conflicts:
	user1.java
	user2.java
Revert "create user2 class"

This reverts commit 78d4d2561a322c5b004817d8c1dbfb6bf3e93e6f.

Conflicts:
	user2.java