准备工具类

在实际开发中，公司都会提供相应的工具类和开发库，可以提高开发效率，程序员也需要能够看懂别人写的代码，并能够正确的调用

1. 了解Utility类的使用
2. 测试Utility类（具体代码放最后）

House类

public class House {
    //编号 房主 电话 地址 月租 状态(未出租/已出租)
    private int id;
    private String name;
    private String phone;
    private String address;
    private int rent;
    private String state;

    public House(int id, String name, String phone, String address, int rent, String state) {
        this.id = id;
        this.name = name;
        this.phone = phone;
        this.address = address;
        this.rent = rent;
        this.state = state;
    }

    @Override
    public String toString() {
        return id +
                "\t" + name +
                "\t" + phone +
                "\t" + address +
                "\t" + rent +
                "\t" + state ;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getRent() {
        return rent;
    }

    public void setRent(int rent) {
        this.rent = rent;
    }

    public String getState() {
        return state;
    }

    public void setState(String state) {
        this.state = state;
    }
}

HouseView类

public class HouseView {

    private boolean loop = true;
    private char key = ' ';

    public void  mainMemu(){
        do {
            System.out.println("------------房屋出租系统------------");
            System.out.println("\t\t\t1 新 增 房 源");
            System.out.println("\t\t\t2 查 找 房 屋");
            System.out.println("\t\t\t3 删 除 房 屋");
            System.out.println("\t\t\t4 修 改 房 屋 信 息");
            System.out.println("\t\t\t5 房 屋 列 表");
            System.out.println("\t\t\t6 退      出");
            System.out.println("请输入你的选择：");
            key = Utility.readChar();
            switch (key){
                case '1':
                    System.out.println("新 增");
                    break;
                case '2':
                    System.out.println("查 找");
                    break;
                case '3':
                    System.out.println("删 除");
                    break;
                case '4':
                    System.out.println("修 改");
                    break;
                case '5':
                    System.out.println("房 屋 列 表");
                    break;
                case '6':
                    System.out.println("退 出");
                    loop = false;
                    break;
            }
        }while (loop);
    }
}

HouseService类

首先得有一个字符成员用来接收用户输入