模拟医院信息管理系统

   系统共有五大功能：增加医生；删除医生；增加患者；删除患者；查询患者信息。
   医生的属性有姓名，性别，科室；患者的属性有姓名，性别，科室，医生。
   系统可以通过控制台进行人机交互，选择功能，并管理医生和患者的信息。

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map.Entry;
import java.util.Scanner;

public class Hospital {

	public static void main(String[] args) {
		LinkedHashMap mapDoctors = new LinkedHashMap();
		LinkedHashMap mapPatients = new LinkedHashMap();
		initDoctorsAndPatients(mapDoctors, mapPatients);
		System.out.println("医院信息系统上线");
		System.out.println("=========医生信息========");
		printDoctor(mapDoctors);
		System.out.println("=========患者信息========");
		printPatient(mapPatients);
		playSystem(mapDoctors, mapPatients);
	}

	// 初始信息
	public static void initDoctorsAndPatients(LinkedHashMap mapDoctors,
			LinkedHashMap mapPatients) {
		mapDoctors.put("李敏", new Doctor("李敏", "女", "心脏科"));
		mapDoctors.put("王磊", new Doctor("王磊", "男", "皮肤科"));
		mapPatients.put("王华", new Patient("王华", "男", "心脏科", new Doctor("李敏", "女", "心脏科")));
		mapPatients.put("陆天赐", new Patient("陆天赐", "男", "外科", new Doctor("王怡", "女", "外科")));
	}

	// 功能设计
	public static void playSystem(LinkedHashMap mapDoctors,
			LinkedHashMap mapPatients) {

		Scanner input = new Scanner(System.in);
		Boolean isContinue = true;
		while (isContinue) {
			System.out.print("功能：1-增加医生  2-删除医生  3-增加患者  4-删除患者  5-查询  6-退出系统" + "\n输入想要使用的功能对应的数字： ");
			int num = input.nextInt();
			if (num > 6 || num < 1) {
				// System.out.print("输入错误！\n请输入1-6之间的数字: ");
				// num=input.nextInt();
				System.out.println("输入错误！请输入1-6之间的数字 !");
				continue;
			}

			switch (num) {
			case 1:
				addDoctor(mapDoctors);
				System.out.println("=========医生信息========");
				printDoctor(mapDoctors);
				break;
			case 2:
				deleteDoctor(mapDoctors);
				System.out.println("=========医生信息========");
				printDoctor(mapDoctors);
				break;
			case 3:
				addPatient(mapPatients);
				System.out.println("=========患者信息========");
				printPatient(mapPatients);
				break;
			case 4:
				deletePatient(mapPatients);
				System.out.println("=========患者信息========");
				printPatient(mapPatients);
				break;
			case 5:
				search(mapPatients);

				break;
			case 6:
				isContinue = false;
				quit();

			}
		}
	}

	// 功能1-增加医生
	public static void addDoctor(LinkedHashMap mapDoctors) {
		Scanner input = new Scanner(System.in);
		System.out.print("录入医生的个数：");
		int number = input.nextInt();
		for (int i = 0; i < number; i++) {
			System.out.print("录入医生的姓名：");
			String n = input.next();
			System.out.print("录入医生的性别：");
			String s = input.next();
			System.out.print("录入医生的科室：");
			String r = input.next();
			mapDoctors.put(n, new Doctor(n, s, r));
		}
	}

	// 功能2-删除医生
	public static void deleteDoctor(LinkedHashMap mapDoctors) {
		Scanner input = new Scanner(System.in);
		System.out.print("删除医生的个数：");
		int number = input.nextInt();
		for (int i = 0; i < number; i++) {
			System.out.print("删除医生：");
			String n = input.next();
			mapDoctors.remove(n);
		}

	}

	// 功能3-增加患者
	public static void addPatient(LinkedHashMap mapPatients) {
		Scanner input = new Scanner(System.in);
		System.out.print("录入患者的个数：");
		int number = input.nextInt();
		for (int i = 0; i < number; i++) {
			System.out.print("录入患者的姓名：");
			String ns = input.next();
			System.out.print("录入患者的性别：");
			String ss = input.next();
			System.out.print("录入患者的科室：");
			String rs = input.next();
			System.out.print("录入患者医生的姓名：");
			String n = input.next();
			System.out.print("录入患者医生的性别：");
			String s = input.next();
			System.out.print("录入患者医生的科室：");
			String r = input.next();
			mapPatients.put(ns, new Patient(ns, ss, rs, new Doctor(n, s, r)));
		}
	}

	// 功能4-删除患者
	public static void deletePatient(LinkedHashMap mapPatients) {
		Scanner input = new Scanner(System.in);
		System.out.print("删除患者的个数：");
		int number = input.nextInt();
		for (int i = 0; i < number; i++) {
			System.out.print("删除患者：");
			String n = input.next();
			mapPatients.remove(n);
		}
	}

	// 功能5-查询
	public static void search(LinkedHashMap mapPatients) {
		Scanner input = new Scanner(System.in);
		System.out.print("查询的患者姓名：");
		String name = input.next();
		if (mapPatients.get(name) == null) {
			System.out.print("系统中没有此患者！\n");
			return;
		}
		System.out.println("患者姓名：" + mapPatients.get(name).name + "  性别：" + mapPatients.get(name).sex + "  科室："
				+ mapPatients.get(name).room + "\n主治医生：" + mapPatients.get(name).doctor.name + "  性别："
				+ mapPatients.get(name).doctor.sex + "  科室：" + mapPatients.get(name).doctor.room);
	}

	// 功能6-退出系统
	public static void quit() {
		System.out.println("系统关闭");
		System.exit(0);
	}

	// 打印医生
	public static void printDoctor(LinkedHashMap mapDoctors) {
		for (Entry entry : mapDoctors.entrySet()) {
			System.out.println("医生姓名：" + entry.getKey() + "\n个人信息：" + "姓名：" + entry.getValue().name + "  性别："
					+ entry.getValue().sex + "  科室：" + entry.getValue().room);
		}

	}

	// 打印患者
	public static void printPatient(LinkedHashMap mapPatients) {
		for (Entry entry : mapPatients.entrySet()) {
			System.out.println("患者姓名：" + entry.getKey() + "\n个人信息:" + " 姓名：" + entry.getValue().name + "  性别："
					+ entry.getValue().sex + "  科室：" + entry.getValue().room + "\n主治医生:" + " 姓名："
					+ entry.getValue().doctor.name + "  性别：" + entry.getValue().doctor.sex + "  科室："
					+ entry.getValue().doctor.room);
		}

	}

}







public class Doctor {
	String name;
	String sex;
	String room;

	public Doctor(String name, String sex, String room) {
		this.name = name;
		this.sex = sex;
		this.room = room;
	}
	}




public class Patient {
	String name;
	String sex;
	String room;
	Doctor doctor;

	public Patient(String name, String sex, String room, Doctor doctor) {
		this.name = name;
		this.sex = sex;
		this.room = room;
		this.doctor = doctor;
	}
}

系统运行结果之一