?? payroll.java
字號:
interface Employee
{
public int salary();
}
class Manager implements Employee
{
private static final int mgrSal = 40000;
public int salary()
{
return mgrSal;
}
}
class Programmer implements Employee
{
private static final int prgSal = 50000;
private static final int prgBonus = 10000;
public int salary()
{
return prgSal;
}
public int bonus()
{
return prgBonus;
}
}
class Payroll
{
public int calcPayroll(Employee emp)
{
int money = emp.salary();
if (emp instanceof Programmer)
money += ((Programmer)emp).bonus(); //Calculate the bonus
return money;
}
public static void main(String args[])
{
Payroll pr = new Payroll();
Programmer prg = new Programmer();
Manager mgr = new Manager();
System.out.println("Payroll for Programmer is " +
pr.calcPayroll(prg));
System.out.println("payroll for Manager is " +
pr.calcPayroll(mgr));
}
}
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