作业5(抽象类作业)含答案.docVIP

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 package ; public class CEO extends Employee { public CEO( String name ){ super( name ); System.out.println( ---有参 + name ); } public CEO(){ } public void payment(){ System.out.println( getName() + 工资：10元每小时 ); } } package ; public class CommissionedEmployee extends Employee { public CommissionedEmployee( String name ){ super( name ); System.out.println( ---有参 + name ); } public CommissionedEmployee(){ } public void payment(){ System.out.println( getName() + 工资：6元每小时 ); } } package ; public class PiecedEmployee extends Employee { public PiecedEmployee( String name ){ super( name ); System.out.println( ---有参 + name ); } public PiecedEmployee(){ } public void payment(){ System.out.println( getName() + 工资：5元每小时 ); } } package ; public abstract class Employee { private String name; public String getName() { return name; } public void setName(String name) { = name; } public Employee( String name ){ = name; } public Employee(){ } public abstract void payment(); } package .test; import .CEO; import .CommissionedEmployee; import .Employee; import .PiecedEmployee; public class TestEmployee { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Employee e = new PiecedEmployee( PiecedEmployee ); if( e instanceof CEO ){ CEO ceo = (CEO)e; ceo.payment(); }else if( e instanceof CommissionedEmployee ){ CommissionedEmployee ce = (CommissionedEmployee)e; ce.payment(); }else{ PiecedEmployee pe = (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