Description: If there are several classes Person object exists a List which, for them to sort, respectively, in accordance with the name, age, id sort (there are two kinds of positive sequence with descending sort). If the age or name duplication, in accordance with the positive sequence id sort. Use strategy mode.
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File list (Check if you may need any files):
strategy
........\Client.java
........\Environment.java
........\Person.java
........\SortByAgeAsc.java
........\SortByAgeDesc.java
........\SortByIdAsc.java
........\SortByIdDesc.java
........\SortByNameAsc.java
........\SortByNameDesc.java
........\Strategy.java