01
02
03 package biz.xsoftware.examples.listener;
04
05
06 /**
07 */
08 public interface UserService
09 {
10 public abstract void addUser(String userName);
11
12 public abstract void deleteUser(String userName);
13
14 public abstract void addUserListener(UserListener l);
15
16 public abstract void removeUserListener(UserListener l);
17 }
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