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社区成员




import java.util.ArrayList;
import java.util.List;
public class Client {
Person p1=new Person("CRoach",19,1);
Person p2=new Person("xiaoxian",20,2);
Person p3=new Person("jiawei",20,3);
Person p4=new Person("dameng",19,4);
Environment environment=new Environment();
SortByNamePositive sortByNamePositive=new SortByNamePositive();
List<Person> list=new ArrayList<Person>();
list.add(p1);
}