java多态性练习

package Employee; public class HEmployee extends Employee { private int hours; private double wage; public HEmployee(String name, String id,int hours,double wage) { super(name, id); this.setHours(hours); this.setWage(wage); // TODO Auto-generated constructor stub } @Override public double earning() { // TODO Auto-generated method stub if(this.getHours()<=30) return this.getHours*30.0; else return 30*30+(this.getHours()-30)*1.5*30; } public int getHours() { return hours; } public void setHours(int hours) { this.hours = hours; } public double getWage() { return wage; } public void setWage(double wage) { this.wage = wage; } @Override public String toString() { // TODO Auto-generated method stub return super.toString()+"\n钟点工:"+this.earning(); } }