作业5(抽象类作业)含答案

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1、1.编写程序计算公司的工资单，公司的雇员,执行总裁CEO，委托雇员CommissionedEmployee(其薪水由基本周薪-周内销售的每一项的特定数量来决定)和计件雇员PiecedEmployee(其薪水由他们一周内生产的每件产品的特定数量来决定)组成。提示：定义Employee抽象类，在Employee抽象类中定义计算雇员的抽象方法payment(),CEO,CommissionedEmployee和PiecedEmployee类继承Employee，实现payment()方法。实现全公司发放工资packagec

2、n.com;publicclassCEOextendsEmployee{publicCEO(Stringname){super(name);System.out.println("---有参"+name);}publicCEO(){}publicvoidpayment(){System.out.println(getName()+"工资：10元每小时");}}packagecn.com;publicclassCommissionedEmployeeextendsEmployee{publicCommissionedE

3、mployee(Stringname){super(name);System.out.println("---有参"+name);}publicCommissionedEmployee(){}publicvoidpayment(){System.out.println(getName()+"工资：6元每小时");}}packagecn.com;publicclassPiecedEmployeeextendsEmployee{publicPiecedEmployee(Stringname){super(name);Sy

4、stem.out.println("---有参"+name);}publicPiecedEmployee(){}publicvoidpayment(){System.out.println(getName()+"工资：5元每小时");}}packagecn.com;publicabstractclassEmployee{privateStringname;publicStringgetName(){returnname;}publicvoidsetName(Stringname){this.name=name;}pu

5、blicEmployee(Stringname){this.name=name;}publicEmployee(){}publicabstractvoidpayment();}packagecn.com.test;importcn.com.CEO;importcn.com.CommissionedEmployee;importcn.com.Employee;importcn.com.PiecedEmployee;publicclassTestEmployee{/***@paramargs*/publicstaticv

6、oidmain(String[]args){//TODOAuto-generatedmethodstubEmployeee=newPiecedEmployee("PiecedEmployee");if(einstanceofCEO){CEOceo=(CEO)e;ceo.payment();}elseif(einstanceofCommissionedEmployee){CommissionedEmployeece=(CommissionedEmployee)e;ce.payment();}else{PiecedEmp

7、loyeepe=(PiecedEmployee)e;pe.payment();}}}2抽象类：创建一个Vehicle类并将它声明为抽象类。在Vehicle类中声明一个NoOfWheels方法，使它返回一个字符串值。创建两个类Car和Motorbike从Vehicle类继承，并在这两个类中实现NoOfWheels方法。在Car类中，应当显示“四轮车”信息；而在Motorbike类中，应当显示“双轮车”信息。创建另一个带main方法的类，在该类中创建Car和Motorbike的实例，并在控制台中显示消息。packagec

8、n.comm;publicabstractclassVehicle{privateStringname;publicVehicle(Stringname){this.name=name;}publicVehicle(){}publicStringgetName(){returnname;}publicvoidsetName(Stringname