JAVA实验题笔记 - 接口&初始化块实验题 抗疫期间大家都在做什么

问题描述

1. 抗疫过程中政府、组织、企业和个人分别在做什么。要求：
2. 定义接口ResistanceToDisease,接口提供doSomething方法；
3. 分别定义Government、Organization、Enterprise和People类实现接口ResistanceToDisease；
4. 根据需要再类中增加必要的属性和方法，并且使用初始化块进行初始化，具体要求见示例；
5. 提供测试程序，在程序中提供菜单，用户可以根据菜单编辑不同类别的角色及其为抗疫做了些什么；

输出形式示例（部分）

菜单如下：

1.Government
2.Organization
3.Enterprise
4.People
5.All
6.exit
your choice:

选择1~4，则依次提示：

enter name:
how do:

你可以输入相应信息，如果没有输入信息则使用初始化信息
而后输出结果（下面的为选择1~4后的默认输出信息）：

China:Unity is strength
WTO:Cooperation with power
Gree:Master core technology
People:Stay at home

选择5，则一次输出默认信息：

China:Unity is strength
WTO:Cooperation with power
Gree:Master core technology
People:Stay at home

选择6，退出程序

Programing Time

package cn.matce.hw9;

import java.util.Scanner;

public class Cyberpunk2020 {

    Scanner sc = new Scanner(System.in);
    String s1, s2;
    String s01, s02;
    static boolean loop = true;

    public static void main(String[] args) {
        Cyberpunk2020 Cy = new Cyberpunk2020();
        while (loop == true) {
            Cy.menu();
        }
    }

    void menu() {
        print("1.Government\n");
        print("2.Organization\n");
        print("3.Enterprise\n");
        print("4.People\n");
        print("5.All\n");
        print("6.exit\n");
        choice();
    }

    void choice() {
        int c = 0;
        s1 = s2 = s01 = s02 = "";
        print("your choice:");
        c = Integer.valueOf(sc.next());

        switch (c) {

        case 1:
            Government G = new Government();
            choice2();
            if (!s1.equals("")) {
                G.Name = s1;
            }
            if (!s2.equals("")) {
                G.ToDo = s2;
            }
            print(G.Name + ":\t" + G.ToDo + "\n");
            break;

        case 2:
            Organization O = new Organization();
            choice2();
            if (!s1.equals("")) {
                O.Name = s1;
            }
            if (!s2.equals("")) {
                O.ToDo = s2;
            }
            print(O.Name + ":\t" + O.ToDo + "\n");
            break;

        case 3:
            Enterprise E = new Enterprise();
            choice2();
            if (!s1.equals("")) {
                E.Name = s1;
            }
            if (!s2.equals("")) {
                E.ToDo = s2;
            }
            print(E.Name + ":\t" + E.ToDo + "\n");
            break;

        case 4:
            People P = new People();
            choice2();
            if (!s1.equals("")) {
                P.Name = s1;
            }
            if (!s2.equals("")) {
                P.ToDo = s2;
            }
            print(P.Name + ":\t" + P.ToDo + "\n");
            break;

        case 5:
            Government G1 = new Government();
            Organization O1 = new Organization();
            Enterprise E1 = new Enterprise();
            People P1 = new People();
            print(G1.Name + ":\t" + G1.ToDo + "\n");
            print(O1.Name + ":\t" + O1.ToDo + "\n");
            print(E1.Name + ":\t" + E1.ToDo + "\n");
            print(P1.Name + ":\t" + P1.ToDo + "\n");
            break;

        case 6:
            loop = false;
            break;
        default:
            print("Wrong Input.");
            break;
        }
    }

    void choice2() {
        print("enter name:");
        sc.nextLine();
        s01 = sc.nextLine();
        if (!s01.equals("")) {
            s1 = s01;
        }

        print("how do:");
        s02 = sc.nextLine();
        if (!s02.equals("")) {
            s2 = s02;
        }
    }

    void print(String s) {
        System.out.print(s);
    }
}

interface ResistanceToDisease {
    public void doSomething();
}

class All implements ResistanceToDisease {
    String Name;
    String ToDo;
    @Override
    public void doSomething() {
    }
}

class Government extends All {
    {
        Name = "China";
        ToDo = "Unity is strength";
    }
}

class Organization extends All {
    {
        Name = "WTO";
        ToDo = "Cooperation with power";
    }
}

class Enterprise extends All {
    {
        Name = "Gree";
        ToDo = "Master core technology";
    }
}

class People extends All {
    {
        Name = "People";
        ToDo = "Stay at home";
    }
}

输出结果

1.Government
2.Organization
3.Enterprise
4.People
5.All
6.exit
your choice:1
enter name:Country1
how do:Do Nothing.
Country1:    Do Nothing.
1.Government
2.Organization
3.Enterprise
4.People
5.All
6.exit
your choice:2
enter name:WWWW
how do:
WWWW:    Cooperation with power
1.Government
2.Organization
3.Enterprise
4.People
5.All
6.exit
your choice:3
enter name:
how do:nice
Gree:    nice
1.Government
2.Organization
3.Enterprise
4.People
5.All
6.exit
your choice:4
enter name:how do:
People:    Stay at home
1.Government
2.Organization
3.Enterprise
4.People
5.All
6.exit
your choice:5
China:    Unity is strength
WTO:    Cooperation with power
Gree:    Master core technology
People:    Stay at home
1.Government
2.Organization
3.Enterprise
4.People
5.All
6.exit
your choice:6