Question

我有4个课程Township，Society，Flat和Owner。如果我输入所有者名称，我将如何从Owner类获得所有数据？

public class TestSociety {
    public static void main(String[] args) {
        HashMap<Integer, TownShip> township = initializeTownShip();

        Scanner scanner = new Scanner(System.in);
        System.out.println("enter name of owner");
        String name = scanner.nextLine();

    }

    private static HashMap<Integer, TownShip> initializeTownShip() {
        // putting township into the hashmap
        HashMap<Integer, TownShip> township = new HashMap<Integer, TownShip>();
        for (int tid = 1; tid < 5; tid++) {
            township.put(tid, new TownShip("topaz", getListOfSociety(tid)));
        }
        return township;
    }

    private static List<Society> getListOfSociety(int tid) {
        // putting societies into the list
        List<Society> listOfSociety = new ArrayList<Society>();
        for (int societyId = 1; societyId < 5; societyId++) {
            listOfSociety.add(new Society(societyId,
                    "society name" + societyId, getListofFlat(societyId)));
        }
        return listOfSociety;
    }

    private static List<Flat> getListofFlat(int societyId) {
        // putting flats into the list
        List<Flat> listOfFlat = new ArrayList<Flat>();
        for (int flatId = 1; flatId <= 10; flatId++) {
            listOfFlat.add(new Flat(flatId, flatId + 1, new Owner("firstname"
                    + flatId, "lastname" + flatId, flatId * 1234)));
        }
        return listOfFlat;
    }
}

Answer 1

我刚尝试了这个，它会工作，实际上它的编码很糟糕，但我想把它做为虚拟代码，我只是创建了一个方法并通过每个循环使用3来迭代所有列表

private static void printOwnerAddressOnContainsStr(List<TownShip> townships, String fname) {
        for (TownShip town : townships) {
            /* System.out.println(town); */
            List<Society> societies = town.getListOfSociety();
            for (Society society : societies) {

                List<Flat> flats = society.getListOfFlat();
                // System.out.println(flats);
                for (Flat flat : flats) {
                    Owner owner = flat.getOwner();
                    // System.out.println(owner);
                    if (owner.getFirstName().contains(fname)){
                        System.out.println("Address is");
                        System.out.println("Owners name :"+owner.getFirstName()+" "+owner.getLastName());
                        System.out.println("flat no: "+flat.getfNo()+" "+society.getsName()+" "+town.gettName());
                        System.out.println("");

                        /*System.out.println(town.gettName()+" "+society.getsName()+" "+flat.getfNo()+" "+owner);
                        //System.out.println(fname);
                        //System.exit(1);
*/                  }
                }

            }

        }
    }

我将如何从所有者获取数据

1 个答案: