抽象类练习

package project1;

public abstract class Employee {
	public abstract double earnings();

}
package project1;

public class MonthWorkers extends Employee {

	@Override
	public double earnings() {
		// TODO Auto-generated method stub
		return 9000*12;
	}

}
package project1;

public class WeekWorkers extends Employee {

	@Override
	public double earnings() {
		// TODO Auto-generated method stub
		return 2000*45;
	}

}
package project1;

public class YearWorkers extends Employee {
	public double earnings() {
		
		return 10000;
	}

}
package project1;

public class Company {
	Employee[] employee;
	double salay = 0;
	Company(Employee[] employee){//构造函数
		this.employee = employee;
	}
	public double salayPay(){//计算总得工资
		salay = 0;
		for(int i=0;i<employee.length;i++){
			salay = salay+employee[i].earnings();
		}
		
		return salay;
	}
	
}
package project1;

public class HardWork {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int a = 10,b = 56,c = 341,total = 0;
		total = a+b+c;//分配三种工资各自的人数
		System.out.println("公司总雇员数："+total);
		Employee[] employee = new Employee[total];
		Company company = new Company(employee);
		for(int i=0;i<a;i++){
			employee[i] = new YearWorkers();
		}
		for(int i=a;i<a+b;i++){
			employee[i] = new MonthWorkers();
		}
		for(int i=a+b;i<a+b+c;i++){
			employee[i] = new WeekWorkers();
		}
		
		
		System.out.println("公司总薪水总额为："+company.salayPay());
		

	}

}