4-2 jmu-java-m04-Person、Teacher与Student (10分)

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概述

4-2 jmu-java-m04-Person、Teacher与Student (10分)
该程序包含

Person类：
属性：int id, String name, LocalDate birthDate。注意：定义时需按照顺序从上到下定义。
方法：构造方法（id, name, year, month, dayOfMonth）, id与birthDate的getter方法， name的getter/setter方法，Eclipse自动生成的tostring。

Student类继承自Person:
属性：int enrollmentYear， String clazzName。
方法：构造方法（id, name, year, month, dayOfMonth, enrollmentYear, clazzName)，建议使用super复用Person的构造函数。toString方法（包含两行，第一行为父类的toString方法，第二行为Student类自身属性的toString方法，具体格式见输出样例）

Teacher类继承自Person：
属性：String department， double salary。
方法：构造方法（id, name, year, month, dayOfMonth, department, salary)，建议使用super复用Person的构造函数。toString方法（包含两行，第一行为父类的toString方法，第二行为Teacher类自身属性的toString方法，具体格式见输出样例）

main方法：

public static void main(String[] args) {
String[] types = {“Student”,“Teacher”};
//输入种子seed，并用其初始化Random对象
//输入对象生成数量n
//以下是生成n个对象的循环
//使用random.nextInt(2)从types数组中随机选取元素x并输出
//根据x选择输入相应的参数
//n个对象的"id,name,birthdate"
//输出数组中的每个对象的toString
}

输入格式:
随机数种子seed
产生对象数量n
n行，每行是每个对象的信息信息。
如果要生成Student对象则依次输入：姓名年月日入学年份班级
如果要生成Teacher对象则依次输入：姓名年月日系薪水

注意：每个对象的id为每次循环的序数，依次从0到n-1

输出格式:
n个对象的类型
n个对象"id,name,birthDate"
n个对象的toString

输入样例:
3
6
Liz 1986 10 10 CS 2000
Tom 1978 5 7 CS 2500.5
Sally 2000 1 3 2018 Net01
Jerry 1988 6 7 Mechanical 1990
Eliza 2001 2 5 2019 Software02
Li 1978 5 7 cs 2400

输出样例:
Teacher
Teacher
Student
Teacher
Student
Teacher
0,Liz,1986-10-10
1,Tom,1978-05-07
2,Sally,2000-01-03
3,Jerry,1988-06-07
4,Eliza,2001-02-05
5,Li,1978-05-07
Person [id=0, name=Liz, birthDate=1986-10-10]
Teacher [department=CS, salary=2000.0]
Person [id=1, name=Tom, birthDate=1978-05-07]
Teacher [department=CS, salary=2500.5]
Person [id=2, name=Sally, birthDate=2000-01-03]
Student [enrollmentYear=2018, clazzName=Net01]
Person [id=3, name=Jerry, birthDate=1988-06-07]
Teacher [department=Mechanical, salary=1990.0]
Person [id=4, name=Eliza, birthDate=2001-02-05]
Student [enrollmentYear=2019, clazzName=Software02]
Person [id=5, name=Li, birthDate=1978-05-07]
Teacher [department=cs, salary=2400.0]

作者
郑如滨
单位
集美大学
代码长度限制
16 KB
时间限制
400 ms
内存限制
64 MB

import java.util.*;
import java.time.LocalDate;

public class Main {
	public static void main(String[] args) {
    	Scanner sc=new Scanner(System.in);
    	String[] types = {"Student","Teacher"};
        int seed=sc.nextInt();
        Random r = new Random(seed);//输入种子seed，并用其初始化Random对象
        int n=sc.nextInt();//输入对象生成数量n
        Person[] p = new Person[n];
        String[] strr = new String[n];
        for(int i=0;i<n;i++)//以下是生成n个对象的循环
       {
    	   String str =types[r.nextInt(2)];
    	  //使用random.nextInt(2)从types数组中随机选取元素x并输出
    	   strr[i]=str;///
    	   //根据x选择输入相应的参数
    	   if(str.equals("Student"))
    	   {
    		   String name=sc.next();
    		   int year=sc.nextInt();
    		   int month=sc.nextInt();
    		   int dayOfMonth=sc.nextInt();
    		   int enrollmentYear=sc.nextInt();
   			   String clazzName=sc.next();
   			   Student s = new Student(i,name,year,month,dayOfMonth,enrollmentYear,clazzName); 
   			   p[i]=s;
    	   }
    	   else if(str.equals("Teacher"))
    	   {
    		   String name=sc.next();
    		   int year=sc.nextInt();
    		   int month=sc.nextInt();
    		   int dayOfMonth=sc.nextInt();
    		   String department=sc.next();
    		   double salary=sc.nextDouble();
    		   Teacher t = new Teacher(i,name,year,month,dayOfMonth,department,salary);
    		   p[i]=t;
    	   }
    	   
       }
        for(String f:strr)
        {
        	System.out.println(f);
        }
        
        for(Person x:p)
        {
        	System.out.println(x.getId()+","+x.getName()+","+x.getBirthDate());
        }
        for(Person x:p)
        {
        	System.out.println(x);
        }
      
      
        
	}

}
class Person
{
	int id;
	String name; 
	LocalDate birthDate;
	int year;
	int month;
	int dayOfMonth;
	
	public Person(int id,String name,int year,int month,int dayOfMonth)
	{
		this.id=id;
		this.name=name;
		this.year=year;
		this.month=month;
		this.dayOfMonth=dayOfMonth;
		this.birthDate=LocalDate.of(this.year,this.month,this.dayOfMonth);
		
	}

	public int getId() {
		return id;
	}

	public String getName() {
		return name;
	}

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

	public LocalDate getBirthDate() {
		return birthDate;
	}


	public String toString() {
		return "Person [id=" + id + ", name=" + name + ", birthDate=" + birthDate +  "]";
	}

}

class Student extends Person
{
	int enrollmentYear;
	String clazzName;
	public Student(int id,String name,int year,int month,int dayOfMonth,int enrollmentYear,String clazzName)
	{
			super(id,name,year,month,dayOfMonth);//使用super复用Person的构造函数
			this.enrollmentYear=enrollmentYear;
			this.clazzName=clazzName;
			
	}
	public String toString()
	{
		return super.toString()+"n"+ "Student [enrollmentYear="+enrollmentYear+", clazzName="+clazzName+"]";
	}
}
class Teacher extends Person
{
	String department;
	double salary;
	
	public Teacher(int id,String name,int year,int month,int dayOfMonth,String department,double salary)
	{
		super(id,name,year,month,dayOfMonth);
		this.department=department;
		this.salary=salary;
	}
	public String toString()
	{
		return super.toString()+"n"+"Teacher [department="+department+", salary="+salary+"]";		
	}
}