某公司的雇员分为以下若干类：

Employee：

​ 这是所有员工总的父类，

​ 属性：员工的姓名,员工的生日月份。

​ 方法：getSalary(int month) 根据参数月份来确定工资，如果该月员工过生日，则公司会额外奖励100元。

package com.hp.ycx;public class Employee {private String name;//员工姓名private int month;//员工生日月份public String getName() {return name;}public void setName(String name) {this.name = name;}public int getMonth() {return month;}public void setMonth(int month) {this.month = month;}public Employee(String name, int month) {this.name = name;this.month = month;}public Employee() {}public int getSalary (int month){return 0;}}

SalariedEmployee：

​ Employee的子类，拿固定工资的员工。

​ 属性：月薪

package com.hp.ycx;public class SalariedEmployee extends Employee {private int yuexin;public SalariedEmployee(String name,int month,int yuexin){this.yuexin = yuexin;}public int getYuexin() {return yuexin;}public void setYuexin(int yuexin) {this.yuexin = yuexin;}@Overridepublic int getSalary(int month) {if (month == getMonth()){return getYuexin()+100;}else {return getYuexin();}}}

HourlyEmployee：

​ Employee的子类，按小时拿工资的员工，每月工作超出160小时的部分按照1.5倍工资发放。

​ 属性：每小时的工资、每月工作的小时数

package com.hp.ycx;public class HourlyEmployee extends Employee {private int xsGongzi;private int myGongzuoxiaoshi;public int getXsGongzi() {return xsGongzi;}public void setXsGongzi(int xsGongzi) {this.xsGongzi = xsGongzi;}public int getMyGongzuoxiaoshi() {return myGongzuoxiaoshi;}public void setMyGongzuoxiaoshi(int myGongzuoxiaoshi) {this.myGongzuoxiaoshi = myGongzuoxiaoshi;}public HourlyEmployee(int xsGongzi, int myGongzuoxiaoshi) {this.xsGongzi = xsGongzi;this.myGongzuoxiaoshi = myGongzuoxiaoshi;}public HourlyEmployee(String name, int month, int xsGongzi, int myGongzuoxiaoshi) {super(name, month);this.xsGongzi = xsGongzi;this.myGongzuoxiaoshi = myGongzuoxiaoshi;}public int getSalary(int month) {if (getMyGongzuoxiaoshi() > 160) {if (month == getMonth()) {double v = (getMyGongzuoxiaoshi() - 160) * (1.5 * getXsGongzi());int i = getXsGongzi() * 160;return (int) (v + i + 100);} else {double v = (getMyGongzuoxiaoshi() - 160) * (1.5 * getXsGongzi());int i = getXsGongzi() * 160;return (int) (v + i);}}else{if(month == getMonth()){int i =(getXsGongzi()*getMyGongzuoxiaoshi())+100;return i ;}else{int i =getXsGongzi()*getMyGongzuoxiaoshi();return i ;}}}}

SalesEmployee：

​ Employee的子类，销售人员，工资由月销售额和提成率决定。

​ 属性：月销售额、提成率

package com.hp.ycx;public class SalesEmployee extends Employee{private int yxioshou;private double ticheng;public int getYxioshou() {return yxioshou;}public void setYxioshou(int yxioshou) {this.yxioshou = yxioshou;}public double getTicheng() {return ticheng;}public void setTicheng(double ticheng) {this.ticheng = ticheng;}public SalesEmployee(String name, int month, int yxioshou,double ticheng) {super(name, month);this.yxioshou = yxioshou;this.ticheng = ticheng;}public SalesEmployee(int yxioshou,double ticheng) {this.yxioshou = yxioshou;this.ticheng = ticheng;}@Overridepublic int getSalary(int month) {if(month == getMonth()){double v = (getYxioshou() * getTicheng());int i =(int) v+100;return i;}else {double v = (getYxioshou() * getTicheng());return (int) v;}}}

BasePlusSalesEmployee：

​ SalesEmployee的子类，有固定底薪的销售人员，工资由底薪加上销售提成部分。

​ 属性：底薪。

package com.hp.ycx;public class BasePlusSalesEmployee extends SalesEmployee{private int dixin;public BasePlusSalesEmployee(String name, int month, int yxioshou, double ticheng,int dixin) {super(name, month, yxioshou, ticheng);this.dixin = dixin;}public BasePlusSalesEmployee(int yxioshou, double ticheng,int dixin) {super(yxioshou, ticheng);this.dixin = dixin;}public int getDixin() {return dixin;}public void setDixin(int dixin) {this.dixin = dixin;}@Overridepublic int getSalary(int month) {if (month == getMonth()){double v = getDixin() + (getYxioshou() * getTicheng());return (int) (v+100);}else {double v = getDixin()+ (getYxioshou() * getTicheng());return (int) v;}}}

Test 测试类

package com.hp.ycx;public class Test {public static void main(String[] args) {Employee salariedEmployee = new SalariedEmployee("陌然", 8, 4000);Employee hourlyEmployee = new HourlyEmployee("寂静", 8, 10, 100);Employee salesEmployee = new SalesEmployee("星夕研", 5, 2000, 3);Employee basePlusSalesEmployee = new BasePlusSalesEmployee("你好", 5, 1500, 3, 3000);int s = salariedEmployee.getSalary(8);System.out.println(salesEmployee.getName()+"月薪是"+s);int s1 = hourlyEmployee.getSalary(8);System.out.println(hourlyEmployee.getName()+"月薪是"+s1);int s2 = salesEmployee.getSalary(5);System.out.println(salesEmployee.getName()+"月薪是"+s2);int s3 = basePlusSalesEmployee.getSalary(5);System.out.println(basePlusSalesEmployee.getName()+"月薪是"+s3);}}

运行结果（只有生日月份）

星夕研月薪是4000寂静月薪是1100星夕研月薪是6100你好月薪是7600Process finished with exit code

设计一个形状类(接口)Shape,方法:求周长和求面积

形状类(接口)的子类(实现类):

Rect(矩形)

Circle(圆形)

Rect类的子类:

Square(正方形)

不同的子类会有不同的计算周长和面积的方法

创建三个不同的形状对象,放在Shape类型的数组里,分别打印出每个对象的周长和面积

Shape

package com.hp.ycx;public interface Shape {//求面积double getArea();//求周长double getPerimeter();}

Circle,Rect

package com.hp.ycx;public class Circle implements Shape{private double a = 3.1415926;private double r;public double getA() {return a;}public void setA(double a) {this.a = a;}public Circle (double r) {this.r = r;}@Overridepublic double getArea() {return a * r * r;}@Overridepublic double getPerimeter() {return a * r * 2;}}

package com.hp.ycx;public class Rect implements Shape{private double width;private double height;public double getWidth() {return width;}public void setWidth(double width) {this.width = width;}public double getHeight() {return height;}public void setHeight(double height) {this.height = height;}public Rect(double width, double height) {this.width = width;this.height = height;}public Rect(double width) {this.width = width;}@Overridepublic double getArea() {return width * height;}@Overridepublic double getPerimeter() {return (width* height)*2;}}

Square

package com.hp.ycx;public class Square extends Rect{public Square(double width) {super(width);}public double getArea() {return getWidth() * getWidth();}public double getPerimeter() {return 4 * getWidth();}}

test

package com.hp.ycx;public class Test {public static void main(String[] args) {Shape[] s = new Shape[3];s[0] = new Circle(3);System.out.println("---圆的周长和面积---");System.out.println(s[0].getArea());System.out.println(s[0].getPerimeter());s[1] = new Rect(5, 5);System.out.println("---矩形周长和面积---");System.out.println(s[1].getArea());System.out.println(s[1].getPerimeter());s[2] = new Square(8);System.out.println("---正方形的周长和面积---");System.out.println(s[2].getArea());System.out.println(s[2].getPerimeter());}}

结果

---圆的周长和面积---28.27433340000000318.849555600000002---矩形周长和面积---25.050.0---正方形的周长和面积---64.032.0Process finished with exit code 0