一個簡單的Java關于使用類小作業

一個簡單的Java關于類的小作業
題目：
1.定義抽象類Person，類中有屬性：姓名、性別、出生日期，實體方法：計算年齡，抽象方法：play

2.定義學生類Student，繼承Person，新增屬性：學號；

|-定義中小學生類，繼承Student，新增屬性：年級、班級；方法：能夠計算圓的面積

|-實作play

|-定義大學生類，繼承Student，新增屬性：專業、年級、班級，方法：能夠計算椎體的體積

|-大學生類的學號：要求使用正則運算式驗證學號是否符合規則->20開頭，8位數字字符

|-實作play

3.定義員工類Employer，繼承Person，新增屬性：工號、月薪、部門、職位，方法：…

4.新建中小學生物件、大學生物件、員工，輸出每個物件的字串表示（屬性值）、 測驗各個方法，

package class_test;
import java.math.*;
public class CollegeStudent extends Student {
@Override
	public String toString() {
		return "bigStudent [zhuanye=" + zhuanye + ", nainji=" + nainji + ", banji=" + banji + ", getZhuanye()="
				+ getZhuanye() + ", getNainji()=" + getNainji() + ", getBanji()=" + getBanji() + ", getNumber()="
				+ getNumber() + ", getName()=" + getName() + ", getSex()=" + getSex() + ", getBirthday()="
				+ getBirthday() + ", getClass()=" + getClass() + ", hashCode()=" + hashCode() + ", toString()="
				+ super.toString() + "]";
	}
public String getZhuanye() {
		return zhuanye;
	}
	public void setZhuanye(String zhuanye) {
		this.zhuanye = zhuanye;
	}
	public String getNainji() {
		return nainji;
	}
	public void setNainji(String nainji) {
		this.nainji = nainji;
	}
	public int getBanji() {
		return banji;
	}
	public void setBanji(int banji) {
		this.banji = banji;
	}
private String zhuanye;
private String nainji;
private int banji;
public CollegeStudent(String zhuanye, String nainji, int i) {
	super();
	this.zhuanye = zhuanye;
	this.nainji = nainji;
	this.banji = i;
}
public CollegeStudent() {}
int getyuanzhui(int r,int h) {
	long area;
	area = (long) ((r*r*(Math.PI))*h*(0.3));
	return (int) area;
}
}

package class_test;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Employer extends Person {
	@Override
	public String toString() {
		return "Employer [gonghao=" + gonghao + ", yuexin=" + yuexin + ", bumen=" + bumen + ", zhiwei=" + zhiwei
				+ ", days=" + days + ", getGonghao()=" + getGonghao() + ", getYuexin()=" + getYuexin() + ", getBumen()="
				+ getBumen() + ", getZhiwei()=" + getZhiwei() + ", getName()=" + getName() + ", getSex()=" + getSex()
				+ ", getBirthday()=" + getBirthday() + ", getClass()=" + getClass() + ", hashCode()=" + hashCode()
				+ ", toString()=" + super.toString() + "]";
	}
	public int getGonghao() {
		return gonghao;
	}
	public void setGonghao(int gonghao) {
		this.gonghao = gonghao;
	}
	public int getYuexin() {
		return yuexin;
	}
	public void setYuexin(int yuexin) {
		this.yuexin = yuexin;
	}
	public String getBumen() {
		return bumen;
	}
	public void setBumen(String bumen) {
		this.bumen = bumen;
	}
	public String getZhiwei() {
		return zhiwei;
	}
	public void setZhiwei(String zhiwei) {
		this.zhiwei = zhiwei;
	}
	private int gonghao;
	private int yuexin;
	private String bumen;
	private String zhiwei;
	private int days;
	public Employer(String name, String sex, String birthday, int gonghao, int yuexin, String bumen, String zhiwei) {
		this.gonghao = gonghao;
		this.yuexin = yuexin;
		this.bumen = bumen;
		this.zhiwei = zhiwei;
	}
	public Employer() {}
	
	public void getAge(String birthday1) throws ParseException {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd,HH:mm:ss");
		Date date = sdf.parse(birthday1);
		long time = date.getTime();
		System.out.println("出生時間距離時間原點"+time+"毫秒");
		Date date1 = new Date();
		System.out.println("當前時間為"+date1);
		long time1 = date1.getTime();
		long time2 = ((time1-time)/86400000)/365;
		System.out.println("年齡為"+time2);
}
}

package class_test;

public abstract class Person {
@Override
	public String toString() {
		return "Person [name=" + name + ", sex=" + sex + ", birthday=" + birthday + ", getName()=" + getName()
				+ ", getSex()=" + getSex() + ", getBirthday()=" + getBirthday() + ", getClass()=" + getClass()
				+ ", hashCode()=" + hashCode() + ", toString()=" + super.toString() + "]";
	}
public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	public String getBirthday() {
		return birthday;
	}
	public void setBirthday(String birthday) {
		this.birthday = birthday;
	}
private String name;
private String sex;
// birthday是一個yyyy-MM-dd HH:mm:ss 型別的時間;
private String birthday;
public Person(String name, String sex, String birthday) {
	super();
	this.name = name;
	this.sex = sex;
	this.birthday = birthday;
}
public Person() {}
void getAge() {

}
}

package class_test;
import java.math.*;
public class Pupils extends Student {
	@Override
	public String toString() {
		return "littleStudent [nianji=" + nianji + ", banji=" + banji + ", getNianji()=" + getNianji() + ", getBanji()="
				+ getBanji() + ", getNumber()=" + getNumber() + ", getName()=" + getName() + ", getSex()=" + getSex()
				+ ", getBirthday()=" + getBirthday() + ", getClass()=" + getClass() + ", hashCode()=" + hashCode()
				+ ", toString()=" + super.toString() + "]";
	}
	public String getNianji() {
		return nianji;
	}
	public void setNianji(String nianji) {
		this.nianji = nianji;
	}
	public String getBanji() {
		return banji;
	}
	public void setBanji(String banji) {
		this.banji = banji;
	}
	private String nianji;
	private String banji;
	public Pupils(String name, String sex, String birthday, String number, String nianji, String banji) {
		super(name, sex, birthday, number);
		this.nianji = nianji;
		this.banji = banji;
	}
	public Pupils() {}
	int getCircle(int r) {
		int area;
		area = (int) (r*r*(Math.PI));
		return area;
	}

}

package class_test;

public class Student extends Person {
	@Override
	public String toString() {
		return "Student [number=" + number + ", getNumber()=" + getNumber() + ", toString()=" + super.toString()
				+ ", getName()=" + getName() + ", getSex()=" + getSex() + ", getBirthday()=" + getBirthday()
				+ ", getClass()=" + getClass() + ", hashCode()=" + hashCode() + "]";
	}

	public 	String getNumber() {
		return number;
	}

	public void setNumber(String number) {
		this.number = number;
	}

	private String number;

	public Student(String name, String sex, String birthday, String number) {
		super(name, sex, birthday);
		this.number = number;
	}
	public Student() {}
}

package class_test;

import java.text.ParseException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class main1 {
public static void main(String[] args) throws ParseException {
	
	CollegeStudent bg = new CollegeStudent("網路工程","2018",1);
	Pupils ls = new Pupils("張三", "男","2000-12-12,00:00:00", "20180001", "2018", "1");
	Employer ep = new Employer("李四", "男","1970-12-12,00:00:00" , 20110001, 3000, "清潔部", "保安");

boolean a;
a = isNumLegal(ls.getNumber());
System.out.println(a);

System.out.println(bg.toString());
System.out.println(ls.toString());
System.out.println(ep.toString());
 int circle = ls.getCircle(2);
 System.out.println(circle);//算圓
 int circle1 = bg.getyuanzhui(8,4);
 System.out.println(circle1);//算圓柱
 //算年齡
 ep.getAge("1970-12-12,00:00:00");
}

private static String String(int number) {
	// TODO Auto-generated method stub
	return null;
}
private static boolean isNumLegal(String str){
    String regExp = "^((20)\\d{6})$";
    Pattern p = Pattern.compile(regExp);
    Matcher m = p.matcher(str);
    return m.matches();
}
}