一个联系人下多个号码去重复

public class Test {

	public static void main(String[] args) {
		Map<String ,List<String>> map = new HashMap<String ,List<String>>();
		Set<String> nameSet = new HashSet<String>();
		List<Contract> list = getContracts();
		for(Contract c : list){
			nameSet.add(c.getName());
		}
		for(String name : nameSet){
			List<String> phones = new ArrayList<String>();
			for(Contract c : list){
				if(name.equals(c.getName())){
					phones.add(c.getPhone());
				}
			}
			map.put(name, phones);
		}
		System.out.println(map);
	}

	public static List<Contract> getContracts(){
		String[] name = {"Tom","Jack","Mike","Tony"};
		List<Contract> list = new ArrayList<Contract>();
		list.add(new Contract(101,name[0],"11111111"));
		list.add(new Contract(102,name[0],"22222222"));
		list.add(new Contract(103,name[1],"33333333"));
		list.add(new Contract(104,name[1],"44444444"));
		list.add(new Contract(105,name[2],"55555555"));
		list.add(new Contract(106,name[2],"66666666"));
		list.add(new Contract(107,name[3],"77777777"));
		list.add(new Contract(108,name[3],"88888888"));
		return list;
	}
}