2020-07-21 - 簡書

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public class Circle {
    private double r;
    Circle(){

    }
    Circle(double r){
        this.r=r;
    }

    public double getR() {
        return r;
    }

    public void setR(double r) {
        this.r = r;
    }
    public void showArea(){
        System.out.println("圓形面積:"+(2*3.14*r));
    }
    public void showPermeter(){
        System.out.println("圓形周長:"+(3.14*r*r));
    }

}

TeseCircle

public class TestCircle {
    public static void main(String[] args) {
        Circle circle = new Circle(8);
        circle.showArea();
        circle.showPermeter();

    }


}

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public class MyDate {
    private int year;
    private int month;
    private int day;
    MyDate( int year,int month,int day){
        this.year=year;
        this.month=month;
        this.day=day;
    }

    public int getYear() {
        return year;
    }

    public void setYear(int year) {
        this.year = year;
    }

    public int getMonth() {
        return month;
    }

    public void setMonth(int month) {
        this.month = month;
    }

    public int getDay() {
        return day;
    }

    public void setDay(int day) {
        this.day = day;
    }
    public void showDate(){
        System.out.println("日期："+year+"年"+month+"月"+day+"日");
    }
    public void isBi(){
        if(year%400==0 || year%4==0 && year%100!=0){
            System.out.println(year+"是閏年");
        }else
            System.out.println(year +"不是閏年");

    }
}

TestDate

public class TestMyDate {
    public static void main(String[] args) {
        MyDate myDate=new MyDate(1900,1,1);
        myDate.showDate();
        myDate.isBi();
    }
}

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public class Card {
    String hs;
    String sum;
    Card(String hs,String sum){
        this.hs=hs;
        this.sum=sum;
    }

    public String getHs() {
        return hs;
    }

    public void setHs(String hs) {
        this.hs = hs;
    }

    public String getSum() {
        return sum;
    }

    public void setSum(String sum) {
        this.sum = sum;
    }
    public void showCard(){
        System.out.println("牌面信息"+hs+sum);
    }
}

TestDate

public class TestCard {
    public static void main(String[] args) {
        Card card=new Card("黑桃","A");
        card.showCard();
    }
}

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Manageer

public class Manager {
    String name;
    String num;
    String money;
    Manager(){

    }
    Manager( String name,String num,String money){
        this.name=name;
        this.num=num;
        this.money=money;
    }

    public String getName() {
        return name;
    }

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

    public String getNum() {
        return num;
    }

    public void setNum(String num) {
        this.num = num;
    }

    public String getMoney() {
        return money;
    }

    public void setMoney(String money) {
        this.money = money;
    }
    public void intor(){
        System.out.println(name+num);
    }
    public void showSalary(){
        System.out.println(money);
    }
    public void work(){
        System.out.println("工作信息");
    }
}

Coder

public class Coder {
    String name;
    String num;
    String money;
    Coder(){

    }
   Coder( String name,String num,String money){
        this.name=name;
        this.num=num;
        this.money=money;
    }

    public String getName() {
        return name;
    }

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

    public String getNum() {
        return num;
    }

    public void setNum(String num) {
        this.num = num;
    }

    public String getMoney() {
        return money;
    }

    public void setMoney(String money) {
        this.money = money;
    }
    public void intor(){
        System.out.println(name+num);
    }
    public void showSalary(){
        System.out.println(money);
    }
    public void work(){
        System.out.println("工作信息");
    }
}

TsetCoder

public class TestManager {
    public static void main(String[] args) {
       Coder coder=new Coder("kobe","0025","基本工資為10000浅碾，獎金無");
        Manager manager=new Manager("james","9527","基本工資為15000徙赢，獎金為3000");
        manager.intor();
        manager.showSalary();
        manager.work();
        System.out.println("=======================");
        coder.intor();
        coder.showSalary();
        coder.work();
    }
}

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Teacher

public class Teacher {
    String num;
    int age;
    String content;
    Teacher(String num,int age,String content){
        this.num=num;
        this.age=age;
        this.content=content;
    }

    public String getNum() {
        return num;
    }

    public void setNum(String num) {
        this.num = num;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public void eat(){
        System.out.println("年齡為"+age+"的"+num+"正在吃飯");
    }
    public void teach(){
        System.out.println("年齡為"+age+"的"+num+content);
    }
}

Student

public class Student {
    String num;
    int age;
    String content;
    Student(String num,int age,String content){
        this.num=num;
        this.age=age;
        this.content=content;
    }

    public String getNum() {
        return num;
    }

    public void setNum(String num) {
        this.num = num;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }
    public void eat(){
        System.out.println("年齡為"+age+"的"+num+"正在吃飯");
    }
    public void study(){
        System.out.println("年齡為"+age+"的"+num+content);
    }
}

TestTeacher

public class TestStudent {
    public static void main(String[] args) {
        Student student=new Student("韓同學",18,"學習java");
        Teacher teacher=new Teacher("周老師",30,"講著java");
     teacher.eat();
     teacher.teach();
     student.study();
     student.eat();
    }
}