public class Family
{
public ArrayList alMembers=new ArrayList();
public void sports()
{
for(Member m:alMembers)
{
m.sports();
}
}
public void addMember(Member m)
{
if(m!=null)
{
alMembers.add(m);
}
}
public static void main(String[] args)
{
Family f=new Family();
f.addMember(new Member("Father","羽毛球"));
f.addMember(new Member("Mother","健美操"));
f.addMember(new Member("Child","跳绳"));
f.sports();
}
}
class Member
{
public String Name="";
public String sportType="";
public Member(String name, String sporttype)
{
Name=name;
sportType=sporttype;
}
public void sports()
{
System.out.println(Name+" is playing "+sportType+".");
}
}